./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-sorted.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 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 15:06:09,810 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 15:06:09,844 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 15:06:09,858 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 15:06:09,860 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 15:06:09,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 15:06:09,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 15:06:09,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 15:06:09,887 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 15:06:09,890 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 15:06:09,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 15:06:09,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 15:06:09,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 15:06:09,892 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 15:06:09,892 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 15:06:09,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 15:06:09,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 15:06:09,893 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 15:06:09,893 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 15:06:09,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 15:06:09,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 15:06:09,894 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 15:06:09,894 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 15:06:09,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 15:06:09,894 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 15:06:09,895 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 15:06:09,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 15:06:09,895 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 15:06:09,895 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 15:06:09,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 15:06:09,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 15:06:09,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 15:06:09,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 15:06:09,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 15:06:09,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 15:06:09,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 15:06:09,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 15:06:09,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 15:06:09,898 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 15:06:09,898 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 15:06:09,899 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 15:06:09,899 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 15:06:09,899 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 15:06:09,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 15:06:10,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 15:06:10,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 15:06:10,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 15:06:10,197 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 15:06:10,199 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 15:06:10,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2024-02-19 15:06:11,345 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 15:06:11,500 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 15:06:11,500 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2024-02-19 15:06:11,509 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc299276b/d7938d57d5754b37a832f024def13459/FLAGe363a77d4 [2024-02-19 15:06:11,525 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc299276b/d7938d57d5754b37a832f024def13459 [2024-02-19 15:06:11,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 15:06:11,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 15:06:11,532 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 15:06:11,532 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 15:06:11,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 15:06:11,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9076f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11, skipping insertion in model container [2024-02-19 15:06:11,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,577 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 15:06:11,741 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c[2434,2447] [2024-02-19 15:06:11,754 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 15:06:11,763 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 15:06:11,795 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c[2434,2447] [2024-02-19 15:06:11,799 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 15:06:11,818 INFO L206 MainTranslator]: Completed translation [2024-02-19 15:06:11,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11 WrapperNode [2024-02-19 15:06:11,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 15:06:11,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 15:06:11,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 15:06:11,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 15:06:11,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,864 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 108 [2024-02-19 15:06:11,864 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 15:06:11,865 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 15:06:11,865 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 15:06:11,865 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 15:06:11,873 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,885 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,904 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 2, 7, 2, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-19 15:06:11,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,927 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 15:06:11,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 15:06:11,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 15:06:11,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 15:06:11,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11" (1/1) ... [2024-02-19 15:06:11,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 15:06:11,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:11,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-19 15:06:11,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-19 15:06:12,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 15:06:12,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 15:06:12,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 15:06:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 15:06:12,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 15:06:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 15:06:12,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 15:06:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 15:06:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 15:06:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 15:06:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 15:06:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 15:06:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 15:06:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 15:06:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 15:06:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 15:06:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 15:06:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 15:06:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 15:06:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 15:06:12,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 15:06:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 15:06:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 15:06:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 15:06:12,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 15:06:12,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 15:06:12,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 15:06:12,021 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 15:06:12,132 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 15:06:12,134 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 15:06:12,427 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 15:06:12,427 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 15:06:12,636 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 15:06:12,636 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-19 15:06:12,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:06:12 BoogieIcfgContainer [2024-02-19 15:06:12,637 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 15:06:12,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 15:06:12,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 15:06:12,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 15:06:12,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 03:06:11" (1/3) ... [2024-02-19 15:06:12,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62666672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:06:12, skipping insertion in model container [2024-02-19 15:06:12,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:06:11" (2/3) ... [2024-02-19 15:06:12,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62666672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:06:12, skipping insertion in model container [2024-02-19 15:06:12,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:06:12" (3/3) ... [2024-02-19 15:06:12,644 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2024-02-19 15:06:12,657 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 15:06:12,657 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 15:06:12,658 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 15:06:12,701 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-19 15:06:12,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 79 flow [2024-02-19 15:06:12,745 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-02-19 15:06:12,745 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 15:06:12,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 26 events. 4/26 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-02-19 15:06:12,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 29 transitions, 79 flow [2024-02-19 15:06:12,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 25 transitions, 68 flow [2024-02-19 15:06:12,756 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 15:06:12,760 INFO L369 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4a14c9ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 15:06:12,761 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-19 15:06:12,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 15:06:12,768 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-02-19 15:06:12,768 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 15:06:12,769 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:12,769 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:12,769 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:12,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:12,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1475293442, now seen corresponding path program 1 times [2024-02-19 15:06:12,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:12,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308341283] [2024-02-19 15:06:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:13,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:13,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308341283] [2024-02-19 15:06:13,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308341283] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:06:13,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:06:13,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 15:06:13,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926422482] [2024-02-19 15:06:13,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:06:13,136 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 15:06:13,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 15:06:13,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 15:06:13,177 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-02-19 15:06:13,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:13,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:13,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-02-19 15:06:13,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:13,352 INFO L124 PetriNetUnfolderBase]: 249/357 cut-off events. [2024-02-19 15:06:13,352 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-02-19 15:06:13,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744 conditions, 357 events. 249/357 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1038 event pairs, 111 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 549. Up to 343 conditions per place. [2024-02-19 15:06:13,357 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 20 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2024-02-19 15:06:13,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 114 flow [2024-02-19 15:06:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 15:06:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 15:06:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-02-19 15:06:13,366 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2024-02-19 15:06:13,369 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-02-19 15:06:13,371 INFO L507 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 114 flow [2024-02-19 15:06:13,371 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:13,372 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:13,372 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:13,372 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 15:06:13,372 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:13,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:13,374 INFO L85 PathProgramCache]: Analyzing trace with hash -875733327, now seen corresponding path program 1 times [2024-02-19 15:06:13,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:13,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894107701] [2024-02-19 15:06:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:13,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:13,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:13,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894107701] [2024-02-19 15:06:13,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894107701] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:06:13,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:06:13,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 15:06:13,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576725102] [2024-02-19 15:06:13,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:06:13,691 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 15:06:13,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:13,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 15:06:13,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 15:06:13,693 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-02-19 15:06:13,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:13,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:13,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-02-19 15:06:13,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:13,805 INFO L124 PetriNetUnfolderBase]: 360/510 cut-off events. [2024-02-19 15:06:13,806 INFO L125 PetriNetUnfolderBase]: For 50/52 co-relation queries the response was YES. [2024-02-19 15:06:13,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1574 conditions, 510 events. 360/510 cut-off events. For 50/52 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1596 event pairs, 39 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1185. Up to 502 conditions per place. [2024-02-19 15:06:13,810 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 33 selfloop transitions, 4 changer transitions 1/42 dead transitions. [2024-02-19 15:06:13,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 269 flow [2024-02-19 15:06:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 15:06:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 15:06:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-02-19 15:06:13,811 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2024-02-19 15:06:13,812 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-02-19 15:06:13,812 INFO L507 AbstractCegarLoop]: Abstraction has has 35 places, 42 transitions, 269 flow [2024-02-19 15:06:13,812 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:13,812 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:13,813 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:13,813 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 15:06:13,813 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:13,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1850503711, now seen corresponding path program 1 times [2024-02-19 15:06:13,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:13,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155703943] [2024-02-19 15:06:13,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:13,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:13,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:13,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155703943] [2024-02-19 15:06:13,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155703943] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:13,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521686344] [2024-02-19 15:06:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:13,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:13,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:13,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:13,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-19 15:06:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:14,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 15:06:14,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:14,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:14,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521686344] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:06:14,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:06:14,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-02-19 15:06:14,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162586203] [2024-02-19 15:06:14,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:06:14,179 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-19 15:06:14,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:14,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-19 15:06:14,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-02-19 15:06:14,184 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-02-19 15:06:14,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 42 transitions, 269 flow. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:14,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:14,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-02-19 15:06:14,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:14,372 INFO L124 PetriNetUnfolderBase]: 663/977 cut-off events. [2024-02-19 15:06:14,373 INFO L125 PetriNetUnfolderBase]: For 201/227 co-relation queries the response was YES. [2024-02-19 15:06:14,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3839 conditions, 977 events. 663/977 cut-off events. For 201/227 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3865 event pairs, 88 based on Foata normal form. 0/655 useless extension candidates. Maximal degree in co-relation 1603. Up to 892 conditions per place. [2024-02-19 15:06:14,381 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 79 selfloop transitions, 7 changer transitions 2/91 dead transitions. [2024-02-19 15:06:14,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 91 transitions, 774 flow [2024-02-19 15:06:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 15:06:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 15:06:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-02-19 15:06:14,384 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5114942528735632 [2024-02-19 15:06:14,386 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-02-19 15:06:14,386 INFO L507 AbstractCegarLoop]: Abstraction has has 40 places, 91 transitions, 774 flow [2024-02-19 15:06:14,386 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:14,386 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:14,386 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:14,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-19 15:06:14,600 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:14,600 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:14,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1558110548, now seen corresponding path program 1 times [2024-02-19 15:06:14,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:14,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561269506] [2024-02-19 15:06:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:14,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:14,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:14,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561269506] [2024-02-19 15:06:14,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561269506] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:14,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725206340] [2024-02-19 15:06:14,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:14,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:14,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:14,754 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:14,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-19 15:06:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:14,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:06:14,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:14,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:15,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725206340] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:06:15,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:06:15,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-02-19 15:06:15,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427967513] [2024-02-19 15:06:15,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:06:15,037 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-19 15:06:15,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-19 15:06:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-02-19 15:06:15,042 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-02-19 15:06:15,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 91 transitions, 774 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:15,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:15,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-02-19 15:06:15,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:15,233 INFO L124 PetriNetUnfolderBase]: 611/933 cut-off events. [2024-02-19 15:06:15,233 INFO L125 PetriNetUnfolderBase]: For 1241/1241 co-relation queries the response was YES. [2024-02-19 15:06:15,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4386 conditions, 933 events. 611/933 cut-off events. For 1241/1241 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3892 event pairs, 148 based on Foata normal form. 0/694 useless extension candidates. Maximal degree in co-relation 1986. Up to 801 conditions per place. [2024-02-19 15:06:15,239 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 87 selfloop transitions, 9 changer transitions 10/110 dead transitions. [2024-02-19 15:06:15,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 110 transitions, 1144 flow [2024-02-19 15:06:15,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 15:06:15,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 15:06:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-02-19 15:06:15,242 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-19 15:06:15,243 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-02-19 15:06:15,244 INFO L507 AbstractCegarLoop]: Abstraction has has 45 places, 110 transitions, 1144 flow [2024-02-19 15:06:15,244 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:15,244 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:15,244 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:15,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-19 15:06:15,455 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-19 15:06:15,455 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:15,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:15,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2131135976, now seen corresponding path program 1 times [2024-02-19 15:06:15,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:15,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809914273] [2024-02-19 15:06:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:15,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:15,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:15,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809914273] [2024-02-19 15:06:15,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809914273] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:15,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469622405] [2024-02-19 15:06:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:15,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:15,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:15,582 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:15,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-19 15:06:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:15,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:06:15,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:15,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:15,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469622405] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:06:15,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:06:15,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-02-19 15:06:15,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098683325] [2024-02-19 15:06:15,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:06:15,779 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-19 15:06:15,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:15,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-19 15:06:15,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-02-19 15:06:15,795 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-02-19 15:06:15,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 110 transitions, 1144 flow. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:15,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:15,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-02-19 15:06:15,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:15,961 INFO L124 PetriNetUnfolderBase]: 562/869 cut-off events. [2024-02-19 15:06:15,961 INFO L125 PetriNetUnfolderBase]: For 1693/1701 co-relation queries the response was YES. [2024-02-19 15:06:15,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4568 conditions, 869 events. 562/869 cut-off events. For 1693/1701 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3386 event pairs, 204 based on Foata normal form. 8/711 useless extension candidates. Maximal degree in co-relation 2484. Up to 677 conditions per place. [2024-02-19 15:06:15,966 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 36 selfloop transitions, 3 changer transitions 51/93 dead transitions. [2024-02-19 15:06:15,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 93 transitions, 1133 flow [2024-02-19 15:06:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 15:06:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 15:06:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-02-19 15:06:15,967 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2024-02-19 15:06:15,967 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-02-19 15:06:15,968 INFO L507 AbstractCegarLoop]: Abstraction has has 50 places, 93 transitions, 1133 flow [2024-02-19 15:06:15,968 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:15,968 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:15,968 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:15,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-19 15:06:16,179 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:16,180 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:16,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1246815482, now seen corresponding path program 2 times [2024-02-19 15:06:16,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:16,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695262491] [2024-02-19 15:06:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:16,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:16,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:16,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:16,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695262491] [2024-02-19 15:06:16,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695262491] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:16,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774844355] [2024-02-19 15:06:16,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:06:16,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:16,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:16,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:16,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-19 15:06:16,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:06:16,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:06:16,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 15:06:16,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:16,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:16,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774844355] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:16,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 15:06:16,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 16 [2024-02-19 15:06:16,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745357438] [2024-02-19 15:06:16,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:06:16,498 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 15:06:16,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:16,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 15:06:16,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2024-02-19 15:06:16,503 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:06:16,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 93 transitions, 1133 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:16,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:16,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:06:16,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:16,757 INFO L124 PetriNetUnfolderBase]: 700/1087 cut-off events. [2024-02-19 15:06:16,758 INFO L125 PetriNetUnfolderBase]: For 2923/2923 co-relation queries the response was YES. [2024-02-19 15:06:16,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6796 conditions, 1087 events. 700/1087 cut-off events. For 2923/2923 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4450 event pairs, 99 based on Foata normal form. 0/857 useless extension candidates. Maximal degree in co-relation 3974. Up to 862 conditions per place. [2024-02-19 15:06:16,766 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 89 selfloop transitions, 11 changer transitions 51/153 dead transitions. [2024-02-19 15:06:16,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 153 transitions, 2179 flow [2024-02-19 15:06:16,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 15:06:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 15:06:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-02-19 15:06:16,767 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5043103448275862 [2024-02-19 15:06:16,768 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-02-19 15:06:16,768 INFO L507 AbstractCegarLoop]: Abstraction has has 57 places, 153 transitions, 2179 flow [2024-02-19 15:06:16,768 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:16,768 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:16,769 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:16,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-19 15:06:16,980 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:16,980 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:16,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:16,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1843924078, now seen corresponding path program 3 times [2024-02-19 15:06:16,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:16,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184318741] [2024-02-19 15:06:16,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:16,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:17,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184318741] [2024-02-19 15:06:17,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184318741] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621918024] [2024-02-19 15:06:17,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:06:17,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:17,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:17,158 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:17,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-19 15:06:17,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 15:06:17,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:06:17,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 15:06:17,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:17,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:17,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621918024] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:17,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 15:06:17,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 16 [2024-02-19 15:06:17,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126521074] [2024-02-19 15:06:17,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:06:17,385 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 15:06:17,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:17,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 15:06:17,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-02-19 15:06:17,389 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:06:17,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 153 transitions, 2179 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:17,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:17,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:06:17,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:17,646 INFO L124 PetriNetUnfolderBase]: 886/1369 cut-off events. [2024-02-19 15:06:17,647 INFO L125 PetriNetUnfolderBase]: For 3814/3814 co-relation queries the response was YES. [2024-02-19 15:06:17,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10012 conditions, 1369 events. 886/1369 cut-off events. For 3814/3814 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5758 event pairs, 103 based on Foata normal form. 0/1049 useless extension candidates. Maximal degree in co-relation 6310. Up to 1126 conditions per place. [2024-02-19 15:06:17,659 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 180 selfloop transitions, 23 changer transitions 56/261 dead transitions. [2024-02-19 15:06:17,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 261 transitions, 4257 flow [2024-02-19 15:06:17,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 15:06:17,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 15:06:17,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-02-19 15:06:17,660 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4870689655172414 [2024-02-19 15:06:17,660 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-02-19 15:06:17,660 INFO L507 AbstractCegarLoop]: Abstraction has has 64 places, 261 transitions, 4257 flow [2024-02-19 15:06:17,661 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:17,662 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:17,662 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:17,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-19 15:06:17,873 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:17,873 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:17,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1507083650, now seen corresponding path program 4 times [2024-02-19 15:06:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129286338] [2024-02-19 15:06:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:17,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:18,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:18,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129286338] [2024-02-19 15:06:18,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129286338] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:18,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470907277] [2024-02-19 15:06:18,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:06:18,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:18,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:18,006 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:18,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-19 15:06:18,091 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:06:18,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:06:18,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 15:06:18,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:18,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:18,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470907277] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:18,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 15:06:18,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 17 [2024-02-19 15:06:18,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904317270] [2024-02-19 15:06:18,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:06:18,233 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 15:06:18,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:18,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 15:06:18,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-02-19 15:06:18,234 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:06:18,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 261 transitions, 4257 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:18,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:18,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:06:18,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:18,509 INFO L124 PetriNetUnfolderBase]: 1006/1557 cut-off events. [2024-02-19 15:06:18,509 INFO L125 PetriNetUnfolderBase]: For 4435/4435 co-relation queries the response was YES. [2024-02-19 15:06:18,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12974 conditions, 1557 events. 1006/1557 cut-off events. For 4435/4435 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6763 event pairs, 109 based on Foata normal form. 0/1179 useless extension candidates. Maximal degree in co-relation 8482. Up to 1307 conditions per place. [2024-02-19 15:06:18,523 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 229 selfloop transitions, 33 changer transitions 62/326 dead transitions. [2024-02-19 15:06:18,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 326 transitions, 5985 flow [2024-02-19 15:06:18,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 15:06:18,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 15:06:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-02-19 15:06:18,524 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49137931034482757 [2024-02-19 15:06:18,524 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-02-19 15:06:18,525 INFO L507 AbstractCegarLoop]: Abstraction has has 71 places, 326 transitions, 5985 flow [2024-02-19 15:06:18,525 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:18,525 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:18,525 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:18,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-19 15:06:18,736 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:18,736 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:18,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash -18129470, now seen corresponding path program 5 times [2024-02-19 15:06:18,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:18,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767832778] [2024-02-19 15:06:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:18,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:18,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:18,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767832778] [2024-02-19 15:06:18,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767832778] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:18,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340203448] [2024-02-19 15:06:18,858 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:06:18,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:18,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:18,859 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:18,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-19 15:06:18,959 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:06:18,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:06:18,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-19 15:06:18,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:06:19,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:06:19,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340203448] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:06:19,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:06:19,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-02-19 15:06:19,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720874523] [2024-02-19 15:06:19,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:06:19,061 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-19 15:06:19,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:19,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-19 15:06:19,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-02-19 15:06:19,065 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-02-19 15:06:19,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 326 transitions, 5985 flow. Second operand has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:19,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:19,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-02-19 15:06:19,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:19,777 INFO L124 PetriNetUnfolderBase]: 1006/1537 cut-off events. [2024-02-19 15:06:19,777 INFO L125 PetriNetUnfolderBase]: For 7475/7475 co-relation queries the response was YES. [2024-02-19 15:06:19,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14068 conditions, 1537 events. 1006/1537 cut-off events. For 7475/7475 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6529 event pairs, 64 based on Foata normal form. 0/1177 useless extension candidates. Maximal degree in co-relation 8692. Up to 1247 conditions per place. [2024-02-19 15:06:19,798 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 260 selfloop transitions, 96 changer transitions 58/415 dead transitions. [2024-02-19 15:06:19,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 415 transitions, 8301 flow [2024-02-19 15:06:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-02-19 15:06:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-02-19 15:06:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 186 transitions. [2024-02-19 15:06:19,800 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40086206896551724 [2024-02-19 15:06:19,801 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-02-19 15:06:19,801 INFO L507 AbstractCegarLoop]: Abstraction has has 86 places, 415 transitions, 8301 flow [2024-02-19 15:06:19,801 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:19,801 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:19,801 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:19,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-19 15:06:20,012 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:20,015 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:20,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:20,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1180840272, now seen corresponding path program 6 times [2024-02-19 15:06:20,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:20,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167652162] [2024-02-19 15:06:20,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:20,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:20,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:20,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167652162] [2024-02-19 15:06:20,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167652162] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:20,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689333838] [2024-02-19 15:06:20,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:06:20,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:20,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:20,121 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:20,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-19 15:06:20,209 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 15:06:20,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:06:20,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 15:06:20,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:20,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:20,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689333838] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:20,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 15:06:20,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 17 [2024-02-19 15:06:20,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760736477] [2024-02-19 15:06:20,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:06:20,376 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 15:06:20,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:20,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 15:06:20,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-02-19 15:06:20,380 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:06:20,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 415 transitions, 8301 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:20,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:20,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:06:20,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:20,683 INFO L124 PetriNetUnfolderBase]: 988/1519 cut-off events. [2024-02-19 15:06:20,684 INFO L125 PetriNetUnfolderBase]: For 8781/8781 co-relation queries the response was YES. [2024-02-19 15:06:20,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15306 conditions, 1519 events. 988/1519 cut-off events. For 8781/8781 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6467 event pairs, 64 based on Foata normal form. 0/1177 useless extension candidates. Maximal degree in co-relation 9462. Up to 1229 conditions per place. [2024-02-19 15:06:20,696 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 290 selfloop transitions, 57 changer transitions 58/411 dead transitions. [2024-02-19 15:06:20,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 411 transitions, 9029 flow [2024-02-19 15:06:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 15:06:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 15:06:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-02-19 15:06:20,697 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-19 15:06:20,698 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-02-19 15:06:20,698 INFO L507 AbstractCegarLoop]: Abstraction has has 93 places, 411 transitions, 9029 flow [2024-02-19 15:06:20,698 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:20,698 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:20,698 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:20,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-19 15:06:20,912 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-02-19 15:06:20,912 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:20,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:20,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1625172844, now seen corresponding path program 7 times [2024-02-19 15:06:20,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:20,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585319889] [2024-02-19 15:06:20,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:20,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:21,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:21,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585319889] [2024-02-19 15:06:21,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585319889] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:21,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326858750] [2024-02-19 15:06:21,022 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:06:21,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:21,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:21,023 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:21,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-19 15:06:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:21,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 15:06:21,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:21,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:21,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326858750] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:21,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 15:06:21,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2024-02-19 15:06:21,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087693211] [2024-02-19 15:06:21,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:06:21,290 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 15:06:21,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:21,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 15:06:21,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-02-19 15:06:21,294 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:06:21,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 411 transitions, 9029 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:21,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:21,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:06:21,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:21,593 INFO L124 PetriNetUnfolderBase]: 969/1478 cut-off events. [2024-02-19 15:06:21,593 INFO L125 PetriNetUnfolderBase]: For 10145/10145 co-relation queries the response was YES. [2024-02-19 15:06:21,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16255 conditions, 1478 events. 969/1478 cut-off events. For 10145/10145 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6221 event pairs, 64 based on Foata normal form. 0/1154 useless extension candidates. Maximal degree in co-relation 10050. Up to 1191 conditions per place. [2024-02-19 15:06:21,606 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 277 selfloop transitions, 53 changer transitions 52/388 dead transitions. [2024-02-19 15:06:21,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 388 transitions, 9267 flow [2024-02-19 15:06:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 15:06:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 15:06:21,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-02-19 15:06:21,607 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49137931034482757 [2024-02-19 15:06:21,607 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-02-19 15:06:21,607 INFO L507 AbstractCegarLoop]: Abstraction has has 100 places, 388 transitions, 9267 flow [2024-02-19 15:06:21,607 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:21,608 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:21,608 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:21,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-19 15:06:21,821 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:21,821 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:21,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:21,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1905528477, now seen corresponding path program 2 times [2024-02-19 15:06:21,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:21,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684471815] [2024-02-19 15:06:21,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:21,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:21,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:21,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684471815] [2024-02-19 15:06:21,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684471815] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:21,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380405293] [2024-02-19 15:06:21,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:06:21,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:21,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:21,901 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:21,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-19 15:06:21,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:06:21,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:06:22,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 15:06:22,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:22,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:06:22,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380405293] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:22,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 15:06:22,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2024-02-19 15:06:22,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10733405] [2024-02-19 15:06:22,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:06:22,063 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 15:06:22,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:22,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 15:06:22,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-02-19 15:06:22,065 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-02-19 15:06:22,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 388 transitions, 9267 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:22,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:22,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-02-19 15:06:22,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:22,308 INFO L124 PetriNetUnfolderBase]: 926/1403 cut-off events. [2024-02-19 15:06:22,308 INFO L125 PetriNetUnfolderBase]: For 12142/12142 co-relation queries the response was YES. [2024-02-19 15:06:22,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16647 conditions, 1403 events. 926/1403 cut-off events. For 12142/12142 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5673 event pairs, 91 based on Foata normal form. 0/1109 useless extension candidates. Maximal degree in co-relation 13035. Up to 1136 conditions per place. [2024-02-19 15:06:22,320 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 278 selfloop transitions, 26 changer transitions 52/369 dead transitions. [2024-02-19 15:06:22,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 369 transitions, 9467 flow [2024-02-19 15:06:22,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 15:06:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 15:06:22,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-02-19 15:06:22,322 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-19 15:06:22,323 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-02-19 15:06:22,323 INFO L507 AbstractCegarLoop]: Abstraction has has 105 places, 369 transitions, 9467 flow [2024-02-19 15:06:22,323 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:22,323 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:22,323 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:22,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-19 15:06:22,534 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-02-19 15:06:22,534 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:22,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2145892701, now seen corresponding path program 1 times [2024-02-19 15:06:22,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738109204] [2024-02-19 15:06:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:06:23,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:23,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738109204] [2024-02-19 15:06:23,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738109204] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:23,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153936743] [2024-02-19 15:06:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:23,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:23,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:23,478 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:23,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-19 15:06:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:23,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-19 15:06:23,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:23,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:06:23,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 32 [2024-02-19 15:06:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:06:23,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:24,323 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:06:24,323 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 133 treesize of output 130 [2024-02-19 15:06:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:06:24,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153936743] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:06:24,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:06:24,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-02-19 15:06:24,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143585980] [2024-02-19 15:06:24,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:06:24,780 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-19 15:06:24,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:24,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-19 15:06:24,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-02-19 15:06:24,785 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:06:24,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 369 transitions, 9467 flow. Second operand has 18 states, 18 states have (on average 8.555555555555555) internal successors, (154), 18 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:24,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:24,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:06:24,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:25,518 INFO L124 PetriNetUnfolderBase]: 1346/2016 cut-off events. [2024-02-19 15:06:25,518 INFO L125 PetriNetUnfolderBase]: For 12357/12357 co-relation queries the response was YES. [2024-02-19 15:06:25,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26261 conditions, 2016 events. 1346/2016 cut-off events. For 12357/12357 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8575 event pairs, 59 based on Foata normal form. 1/1549 useless extension candidates. Maximal degree in co-relation 21858. Up to 1687 conditions per place. [2024-02-19 15:06:25,535 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 442 selfloop transitions, 127 changer transitions 56/632 dead transitions. [2024-02-19 15:06:25,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 632 transitions, 17521 flow [2024-02-19 15:06:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 15:06:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 15:06:25,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-02-19 15:06:25,536 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5325670498084292 [2024-02-19 15:06:25,537 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-02-19 15:06:25,537 INFO L507 AbstractCegarLoop]: Abstraction has has 113 places, 632 transitions, 17521 flow [2024-02-19 15:06:25,537 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.555555555555555) internal successors, (154), 18 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:25,537 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:25,538 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:25,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-02-19 15:06:25,760 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-02-19 15:06:25,760 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:25,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:25,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1349418257, now seen corresponding path program 1 times [2024-02-19 15:06:25,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:25,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023042143] [2024-02-19 15:06:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:25,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:26,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:26,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023042143] [2024-02-19 15:06:26,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023042143] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:26,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718542070] [2024-02-19 15:06:26,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:26,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:26,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:26,470 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:26,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-19 15:06:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:26,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 40 conjunts are in the unsatisfiable core [2024-02-19 15:06:26,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:26,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:06:26,879 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:06:26,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2024-02-19 15:06:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:26,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:28,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2024-02-19 15:06:28,154 INFO L349 Elim1Store]: treesize reduction 23, result has 34.3 percent of original size [2024-02-19 15:06:28,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 122 treesize of output 95 [2024-02-19 15:06:28,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2024-02-19 15:06:28,194 INFO L349 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2024-02-19 15:06:28,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 118 treesize of output 1 [2024-02-19 15:06:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:28,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718542070] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:06:28,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:06:28,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-02-19 15:06:28,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794082519] [2024-02-19 15:06:28,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:06:28,243 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-19 15:06:28,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:28,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-19 15:06:28,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2024-02-19 15:06:28,256 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:06:28,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 632 transitions, 17521 flow. Second operand has 26 states, 26 states have (on average 7.653846153846154) internal successors, (199), 26 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:28,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:28,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:06:28,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:33,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:06:34,346 INFO L124 PetriNetUnfolderBase]: 2807/4144 cut-off events. [2024-02-19 15:06:34,346 INFO L125 PetriNetUnfolderBase]: For 21971/21971 co-relation queries the response was YES. [2024-02-19 15:06:34,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58401 conditions, 4144 events. 2807/4144 cut-off events. For 21971/21971 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 19708 event pairs, 53 based on Foata normal form. 1/3092 useless extension candidates. Maximal degree in co-relation 28261. Up to 3571 conditions per place. [2024-02-19 15:06:34,387 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 1060 selfloop transitions, 207 changer transitions 79/1365 dead transitions. [2024-02-19 15:06:34,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 1365 transitions, 40601 flow [2024-02-19 15:06:34,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-19 15:06:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-19 15:06:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 277 transitions. [2024-02-19 15:06:34,390 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47758620689655173 [2024-02-19 15:06:34,390 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-02-19 15:06:34,390 INFO L507 AbstractCegarLoop]: Abstraction has has 132 places, 1365 transitions, 40601 flow [2024-02-19 15:06:34,390 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.653846153846154) internal successors, (199), 26 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:34,390 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:34,390 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:34,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-19 15:06:34,602 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-02-19 15:06:34,602 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:34,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1628881657, now seen corresponding path program 2 times [2024-02-19 15:06:34,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:34,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498807982] [2024-02-19 15:06:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:34,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:35,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:35,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498807982] [2024-02-19 15:06:35,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498807982] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:35,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266491867] [2024-02-19 15:06:35,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:06:35,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:35,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:35,458 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:35,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-19 15:06:35,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:06:35,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:06:35,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 43 conjunts are in the unsatisfiable core [2024-02-19 15:06:35,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:35,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:06:35,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:06:35,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:06:35,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 152 [2024-02-19 15:06:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:37,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:39,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 88 [2024-02-19 15:06:39,586 INFO L349 Elim1Store]: treesize reduction 21, result has 40.0 percent of original size [2024-02-19 15:06:39,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 911 treesize of output 776 [2024-02-19 15:06:39,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 88 [2024-02-19 15:06:39,654 INFO L349 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2024-02-19 15:06:39,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 947 treesize of output 1 [2024-02-19 15:06:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:06:39,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266491867] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:06:39,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:06:39,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 32 [2024-02-19 15:06:39,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697938950] [2024-02-19 15:06:39,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:06:39,698 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-02-19 15:06:39,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:39,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-02-19 15:06:39,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2024-02-19 15:06:39,721 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-02-19 15:06:39,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 1365 transitions, 40601 flow. Second operand has 33 states, 33 states have (on average 6.181818181818182) internal successors, (204), 33 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:39,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:39,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-02-19 15:06:39,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:44,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:06:52,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:06:54,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:06:56,437 INFO L124 PetriNetUnfolderBase]: 3117/4651 cut-off events. [2024-02-19 15:06:56,437 INFO L125 PetriNetUnfolderBase]: For 23421/23421 co-relation queries the response was YES. [2024-02-19 15:06:56,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70455 conditions, 4651 events. 3117/4651 cut-off events. For 23421/23421 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 22984 event pairs, 53 based on Foata normal form. 3/3483 useless extension candidates. Maximal degree in co-relation 35774. Up to 4066 conditions per place. [2024-02-19 15:06:56,489 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 1290 selfloop transitions, 229 changer transitions 104/1624 dead transitions. [2024-02-19 15:06:56,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 1624 transitions, 51440 flow [2024-02-19 15:06:56,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-02-19 15:06:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-02-19 15:06:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 341 transitions. [2024-02-19 15:06:56,491 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36745689655172414 [2024-02-19 15:06:56,491 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-02-19 15:06:56,492 INFO L507 AbstractCegarLoop]: Abstraction has has 163 places, 1624 transitions, 51440 flow [2024-02-19 15:06:56,492 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.181818181818182) internal successors, (204), 33 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:56,492 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:56,492 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:06:56,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-02-19 15:06:56,703 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-02-19 15:06:56,704 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:06:56,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:56,704 INFO L85 PathProgramCache]: Analyzing trace with hash 856196599, now seen corresponding path program 2 times [2024-02-19 15:06:56,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:56,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038062181] [2024-02-19 15:06:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:56,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:06:57,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:57,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038062181] [2024-02-19 15:06:57,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038062181] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:57,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043452493] [2024-02-19 15:06:57,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:06:57,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:57,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:57,416 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:06:57,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-19 15:06:57,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:06:57,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:06:57,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-19 15:06:57,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:57,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:06:57,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 31 [2024-02-19 15:06:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:06:57,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:58,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:06:58,147 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 147 treesize of output 132 [2024-02-19 15:06:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:06:58,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043452493] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:06:58,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:06:58,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-02-19 15:06:58,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296543773] [2024-02-19 15:06:58,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:06:58,609 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-19 15:06:58,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:58,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-19 15:06:58,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-02-19 15:06:58,616 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:06:58,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 1624 transitions, 51440 flow. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:06:58,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:58,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:06:58,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:07:00,409 INFO L124 PetriNetUnfolderBase]: 3675/5435 cut-off events. [2024-02-19 15:07:00,409 INFO L125 PetriNetUnfolderBase]: For 32358/32358 co-relation queries the response was YES. [2024-02-19 15:07:00,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87934 conditions, 5435 events. 3675/5435 cut-off events. For 32358/32358 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 27260 event pairs, 55 based on Foata normal form. 2/4026 useless extension candidates. Maximal degree in co-relation 44483. Up to 4807 conditions per place. [2024-02-19 15:07:00,464 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 1521 selfloop transitions, 251 changer transitions 121/1927 dead transitions. [2024-02-19 15:07:00,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 1927 transitions, 65030 flow [2024-02-19 15:07:00,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 15:07:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 15:07:00,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-02-19 15:07:00,465 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2024-02-19 15:07:00,465 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-02-19 15:07:00,465 INFO L507 AbstractCegarLoop]: Abstraction has has 171 places, 1927 transitions, 65030 flow [2024-02-19 15:07:00,465 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:07:00,465 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:07:00,466 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:07:00,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-19 15:07:00,676 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:07:00,676 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:07:00,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:07:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash -411260579, now seen corresponding path program 3 times [2024-02-19 15:07:00,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:07:00,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320698850] [2024-02-19 15:07:00,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:07:00,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:07:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:07:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:07:01,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:07:01,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320698850] [2024-02-19 15:07:01,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320698850] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:07:01,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173251665] [2024-02-19 15:07:01,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:07:01,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:07:01,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:07:01,421 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:07:01,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-19 15:07:01,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 15:07:01,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:07:01,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-19 15:07:01,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:07:01,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:07:01,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2024-02-19 15:07:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:07:01,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:07:02,084 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:07:02,084 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 137 treesize of output 122 [2024-02-19 15:07:02,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:07:02,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173251665] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:07:02,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:07:02,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-02-19 15:07:02,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934524079] [2024-02-19 15:07:02,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:07:02,563 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-19 15:07:02,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:07:02,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-19 15:07:02,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-02-19 15:07:02,570 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:07:02,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 1927 transitions, 65030 flow. Second operand has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 15 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) [2024-02-19 15:07:02,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:07:02,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:07:02,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:07:04,730 INFO L124 PetriNetUnfolderBase]: 3963/5857 cut-off events. [2024-02-19 15:07:04,730 INFO L125 PetriNetUnfolderBase]: For 40757/40757 co-relation queries the response was YES. [2024-02-19 15:07:04,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100446 conditions, 5857 events. 3963/5857 cut-off events. For 40757/40757 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 29701 event pairs, 51 based on Foata normal form. 2/4320 useless extension candidates. Maximal degree in co-relation 50559. Up to 5229 conditions per place. [2024-02-19 15:07:04,797 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 1684 selfloop transitions, 202 changer transitions 129/2049 dead transitions. [2024-02-19 15:07:04,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 2049 transitions, 73262 flow [2024-02-19 15:07:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 15:07:04,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 15:07:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-02-19 15:07:04,803 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2024-02-19 15:07:04,803 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-02-19 15:07:04,803 INFO L507 AbstractCegarLoop]: Abstraction has has 179 places, 2049 transitions, 73262 flow [2024-02-19 15:07:04,804 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 15 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) [2024-02-19 15:07:04,804 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:07:04,804 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:07:04,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-02-19 15:07:05,015 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-02-19 15:07:05,015 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:07:05,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:07:05,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1459390127, now seen corresponding path program 3 times [2024-02-19 15:07:05,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:07:05,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797809661] [2024-02-19 15:07:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:07:05,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:07:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:07:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:07:05,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:07:05,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797809661] [2024-02-19 15:07:05,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797809661] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:07:05,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469661944] [2024-02-19 15:07:05,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:07:05,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:07:05,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:07:05,990 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:07:05,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-19 15:07:06,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 15:07:06,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:07:06,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 41 conjunts are in the unsatisfiable core [2024-02-19 15:07:06,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:07:06,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:07:06,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-19 15:07:06,404 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:07:06,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 58 [2024-02-19 15:07:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:07:06,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:07:12,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2024-02-19 15:07:12,348 INFO L349 Elim1Store]: treesize reduction 21, result has 40.0 percent of original size [2024-02-19 15:07:12,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 118 treesize of output 93 [2024-02-19 15:07:12,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2024-02-19 15:07:12,397 INFO L349 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2024-02-19 15:07:12,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 122 treesize of output 1 [2024-02-19 15:07:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:07:12,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469661944] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:07:12,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:07:12,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 32 [2024-02-19 15:07:12,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903736548] [2024-02-19 15:07:12,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:07:12,480 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-02-19 15:07:12,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:07:12,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-02-19 15:07:12,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=872, Unknown=1, NotChecked=0, Total=1056 [2024-02-19 15:07:12,540 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-02-19 15:07:12,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 2049 transitions, 73262 flow. Second operand has 33 states, 33 states have (on average 6.181818181818182) internal successors, (204), 33 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:07:12,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:07:12,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-02-19 15:07:12,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:07:17,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:07:22,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:07:27,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:07:31,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:07:32,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:07:39,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:07:41,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:07:42,922 INFO L124 PetriNetUnfolderBase]: 4294/6385 cut-off events. [2024-02-19 15:07:42,922 INFO L125 PetriNetUnfolderBase]: For 43042/43042 co-relation queries the response was YES. [2024-02-19 15:07:42,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115923 conditions, 6385 events. 4294/6385 cut-off events. For 43042/43042 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 33368 event pairs, 59 based on Foata normal form. 3/4733 useless extension candidates. Maximal degree in co-relation 60719. Up to 5733 conditions per place. [2024-02-19 15:07:42,996 INFO L140 encePairwiseOnDemand]: 16/29 looper letters, 1701 selfloop transitions, 482 changer transitions 154/2338 dead transitions. [2024-02-19 15:07:42,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 2338 transitions, 88055 flow [2024-02-19 15:07:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-02-19 15:07:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-02-19 15:07:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 315 transitions. [2024-02-19 15:07:42,998 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43448275862068964 [2024-02-19 15:07:42,998 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-02-19 15:07:42,998 INFO L507 AbstractCegarLoop]: Abstraction has has 203 places, 2338 transitions, 88055 flow [2024-02-19 15:07:42,998 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.181818181818182) internal successors, (204), 33 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:07:42,998 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:07:42,999 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:07:43,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-02-19 15:07:43,199 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-19 15:07:43,199 INFO L432 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)] === [2024-02-19 15:07:43,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:07:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash 222446783, now seen corresponding path program 4 times [2024-02-19 15:07:43,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:07:43,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107339532] [2024-02-19 15:07:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:07:43,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:07:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:07:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:07:44,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:07:44,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107339532] [2024-02-19 15:07:44,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107339532] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:07:44,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188252442] [2024-02-19 15:07:44,007 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:07:44,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:07:44,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:07:44,008 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:07:44,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-19 15:07:44,143 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:07:44,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:07:44,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 38 conjunts are in the unsatisfiable core [2024-02-19 15:07:44,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:07:44,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:07:44,400 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:07:44,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2024-02-19 15:07:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:07:44,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:07:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:07:45,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188252442] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:07:45,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:07:45,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 28 [2024-02-19 15:07:45,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407766469] [2024-02-19 15:07:45,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:07:45,680 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-02-19 15:07:45,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:07:45,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-02-19 15:07:45,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2024-02-19 15:07:45,713 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-02-19 15:07:45,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 2338 transitions, 88055 flow. Second operand has 28 states, 28 states have (on average 6.535714285714286) internal successors, (183), 28 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:07:45,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:07:45,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-02-19 15:07:45,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:07:50,229 INFO L124 PetriNetUnfolderBase]: 4505/6726 cut-off events. [2024-02-19 15:07:50,229 INFO L125 PetriNetUnfolderBase]: For 44490/44490 co-relation queries the response was YES. [2024-02-19 15:07:50,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129020 conditions, 6726 events. 4505/6726 cut-off events. For 44490/44490 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 35781 event pairs, 63 based on Foata normal form. 5/4982 useless extension candidates. Maximal degree in co-relation 68773. Up to 6020 conditions per place. [2024-02-19 15:07:50,305 INFO L140 encePairwiseOnDemand]: 16/29 looper letters, 1814 selfloop transitions, 524 changer transitions 201/2540 dead transitions. [2024-02-19 15:07:50,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 2540 transitions, 100726 flow [2024-02-19 15:07:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-02-19 15:07:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-02-19 15:07:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 329 transitions. [2024-02-19 15:07:50,307 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42017879948914433 [2024-02-19 15:07:50,307 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-02-19 15:07:50,307 INFO L507 AbstractCegarLoop]: Abstraction has has 229 places, 2540 transitions, 100726 flow [2024-02-19 15:07:50,307 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.535714285714286) internal successors, (183), 28 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:07:50,307 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:07:50,307 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:07:50,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-02-19 15:07:50,512 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:07:50,512 INFO L432 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)] === [2024-02-19 15:07:50,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:07:50,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1694406691, now seen corresponding path program 4 times [2024-02-19 15:07:50,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:07:50,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237634060] [2024-02-19 15:07:50,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:07:50,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:07:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:07:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:07:51,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:07:51,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237634060] [2024-02-19 15:07:51,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237634060] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:07:51,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231470349] [2024-02-19 15:07:51,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:07:51,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:07:51,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:07:51,191 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:07:51,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-19 15:07:51,310 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:07:51,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:07:51,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-19 15:07:51,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:07:51,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:07:51,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 32 [2024-02-19 15:07:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:07:51,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:07:51,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:07:51,854 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 147 treesize of output 132 [2024-02-19 15:07:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:07:52,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231470349] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:07:52,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:07:52,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-02-19 15:07:52,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220615957] [2024-02-19 15:07:52,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:07:52,274 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-19 15:07:52,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:07:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-19 15:07:52,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-02-19 15:07:52,287 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:07:52,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 2540 transitions, 100726 flow. Second operand has 18 states, 18 states have (on average 8.555555555555555) internal successors, (154), 18 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:07:52,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:07:52,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:07:52,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:07:55,909 INFO L124 PetriNetUnfolderBase]: 4717/7040 cut-off events. [2024-02-19 15:07:55,909 INFO L125 PetriNetUnfolderBase]: For 54137/54137 co-relation queries the response was YES. [2024-02-19 15:07:55,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141774 conditions, 7040 events. 4717/7040 cut-off events. For 54137/54137 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 37753 event pairs, 63 based on Foata normal form. 2/5189 useless extension candidates. Maximal degree in co-relation 75116. Up to 6334 conditions per place. [2024-02-19 15:07:55,998 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 2080 selfloop transitions, 289 changer transitions 211/2632 dead transitions. [2024-02-19 15:07:55,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 2632 transitions, 109574 flow [2024-02-19 15:07:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 15:07:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 15:07:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-02-19 15:07:55,999 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2024-02-19 15:07:55,999 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-02-19 15:07:55,999 INFO L507 AbstractCegarLoop]: Abstraction has has 237 places, 2632 transitions, 109574 flow [2024-02-19 15:07:56,000 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.555555555555555) internal successors, (154), 18 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:07:56,000 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:07:56,000 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:07:56,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-02-19 15:07:56,211 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:07:56,212 INFO L432 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)] === [2024-02-19 15:07:56,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:07:56,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1333103427, now seen corresponding path program 5 times [2024-02-19 15:07:56,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:07:56,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29914625] [2024-02-19 15:07:56,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:07:56,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:07:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:07:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:07:56,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:07:56,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29914625] [2024-02-19 15:07:56,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29914625] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:07:56,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156121582] [2024-02-19 15:07:56,790 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:07:56,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:07:56,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:07:56,791 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:07:56,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-19 15:07:56,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:07:56,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:07:56,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 21 conjunts are in the unsatisfiable core [2024-02-19 15:07:56,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:07:57,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:07:57,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 32 [2024-02-19 15:07:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:07:57,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:07:57,464 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:07:57,465 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 137 treesize of output 122 [2024-02-19 15:07:57,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:07:57,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156121582] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:07:57,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:07:57,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-02-19 15:07:57,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506506748] [2024-02-19 15:07:57,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:07:57,960 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-19 15:07:57,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:07:57,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-19 15:07:57,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-02-19 15:07:57,965 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:07:57,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 2632 transitions, 109574 flow. Second operand has 18 states, 18 states have (on average 8.555555555555555) internal successors, (154), 18 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:07:57,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:07:57,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:07:57,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:08:01,662 INFO L124 PetriNetUnfolderBase]: 5005/7462 cut-off events. [2024-02-19 15:08:01,662 INFO L125 PetriNetUnfolderBase]: For 68144/68144 co-relation queries the response was YES. [2024-02-19 15:08:01,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157404 conditions, 7462 events. 5005/7462 cut-off events. For 68144/68144 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 40443 event pairs, 67 based on Foata normal form. 2/5483 useless extension candidates. Maximal degree in co-relation 82875. Up to 6756 conditions per place. [2024-02-19 15:08:01,760 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 2254 selfloop transitions, 229 changer transitions 219/2754 dead transitions. [2024-02-19 15:08:01,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 2754 transitions, 120152 flow [2024-02-19 15:08:01,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 15:08:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 15:08:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-02-19 15:08:01,761 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2024-02-19 15:08:01,761 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-02-19 15:08:01,761 INFO L507 AbstractCegarLoop]: Abstraction has has 245 places, 2754 transitions, 120152 flow [2024-02-19 15:08:01,762 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.555555555555555) internal successors, (154), 18 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:08:01,762 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:08:01,762 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:08:01,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-02-19 15:08:01,973 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:08:01,974 INFO L432 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)] === [2024-02-19 15:08:01,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:08:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1274875075, now seen corresponding path program 6 times [2024-02-19 15:08:01,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:08:01,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025275611] [2024-02-19 15:08:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:08:01,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:08:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:08:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:08:02,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:08:02,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025275611] [2024-02-19 15:08:02,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025275611] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:08:02,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300349471] [2024-02-19 15:08:02,642 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:08:02,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:08:02,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:08:02,643 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:08:02,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-19 15:08:02,824 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 15:08:02,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:08:02,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-19 15:08:02,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:08:02,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:08:02,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2024-02-19 15:08:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:08:03,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:08:03,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:08:03,307 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 123 treesize of output 120 [2024-02-19 15:08:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:08:03,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300349471] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:08:03,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:08:03,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-02-19 15:08:03,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199882319] [2024-02-19 15:08:03,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:08:03,743 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-19 15:08:03,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:08:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-19 15:08:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-02-19 15:08:03,749 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:08:03,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 2754 transitions, 120152 flow. Second operand has 16 states, 16 states have (on average 8.5) internal successors, (136), 16 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:08:03,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:08:03,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:08:03,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:08:08,191 INFO L124 PetriNetUnfolderBase]: 5369/7992 cut-off events. [2024-02-19 15:08:08,191 INFO L125 PetriNetUnfolderBase]: For 84607/84607 co-relation queries the response was YES. [2024-02-19 15:08:08,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175922 conditions, 7992 events. 5369/7992 cut-off events. For 84607/84607 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 43758 event pairs, 49 based on Foata normal form. 2/5861 useless extension candidates. Maximal degree in co-relation 92056. Up to 7254 conditions per place. [2024-02-19 15:08:08,307 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 2364 selfloop transitions, 261 changer transitions 227/2904 dead transitions. [2024-02-19 15:08:08,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 2904 transitions, 132476 flow [2024-02-19 15:08:08,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 15:08:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 15:08:08,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-02-19 15:08:08,308 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2024-02-19 15:08:08,309 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-02-19 15:08:08,309 INFO L507 AbstractCegarLoop]: Abstraction has has 253 places, 2904 transitions, 132476 flow [2024-02-19 15:08:08,309 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5) internal successors, (136), 16 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:08:08,309 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:08:08,309 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:08:08,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-02-19 15:08:08,520 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-02-19 15:08:08,520 INFO L432 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)] === [2024-02-19 15:08:08,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:08:08,521 INFO L85 PathProgramCache]: Analyzing trace with hash 894489079, now seen corresponding path program 5 times [2024-02-19 15:08:08,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:08:08,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278415630] [2024-02-19 15:08:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:08:08,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:08:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:08:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:08:09,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:08:09,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278415630] [2024-02-19 15:08:09,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278415630] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:08:09,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438766174] [2024-02-19 15:08:09,455 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:08:09,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:08:09,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:08:09,456 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:08:09,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-02-19 15:08:09,628 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:08:09,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:08:09,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 38 conjunts are in the unsatisfiable core [2024-02-19 15:08:09,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:08:09,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:08:09,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:08:09,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 152 [2024-02-19 15:08:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:08:11,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:08:12,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:08:12,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438766174] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:08:12,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:08:12,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 26 [2024-02-19 15:08:12,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864637692] [2024-02-19 15:08:12,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:08:12,933 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-19 15:08:12,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:08:12,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-19 15:08:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2024-02-19 15:08:12,939 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:08:12,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 2904 transitions, 132476 flow. Second operand has 26 states, 26 states have (on average 7.615384615384615) internal successors, (198), 26 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:08:12,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:08:12,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:08:12,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:08:16,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-02-19 15:08:24,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:08:30,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-02-19 15:08:33,758 INFO L124 PetriNetUnfolderBase]: 6425/9526 cut-off events. [2024-02-19 15:08:33,759 INFO L125 PetriNetUnfolderBase]: For 91077/91077 co-relation queries the response was YES. [2024-02-19 15:08:33,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219073 conditions, 9526 events. 6425/9526 cut-off events. For 91077/91077 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 53210 event pairs, 47 based on Foata normal form. 7/6940 useless extension candidates. Maximal degree in co-relation 113438. Up to 8599 conditions per place. [2024-02-19 15:08:33,919 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 2649 selfloop transitions, 521 changer transitions 260/3484 dead transitions. [2024-02-19 15:08:33,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 3484 transitions, 165808 flow [2024-02-19 15:08:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-02-19 15:08:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-02-19 15:08:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 543 transitions. [2024-02-19 15:08:33,921 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42554858934169276 [2024-02-19 15:08:33,921 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-02-19 15:08:33,921 INFO L507 AbstractCegarLoop]: Abstraction has has 296 places, 3484 transitions, 165808 flow [2024-02-19 15:08:33,922 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.615384615384615) internal successors, (198), 26 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:08:33,922 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:08:33,922 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:08:33,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-02-19 15:08:34,122 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-02-19 15:08:34,122 INFO L432 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)] === [2024-02-19 15:08:34,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:08:34,123 INFO L85 PathProgramCache]: Analyzing trace with hash -700748884, now seen corresponding path program 7 times [2024-02-19 15:08:34,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:08:34,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776882788] [2024-02-19 15:08:34,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:08:34,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:08:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:08:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:08:34,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:08:34,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776882788] [2024-02-19 15:08:34,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776882788] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:08:34,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750020521] [2024-02-19 15:08:34,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:08:34,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:08:34,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:08:34,227 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:08:34,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-02-19 15:08:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:08:34,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:08:34,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:08:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:08:34,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:08:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:08:34,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750020521] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:08:34,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:08:34,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-02-19 15:08:34,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678564300] [2024-02-19 15:08:34,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:08:34,516 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-19 15:08:34,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:08:34,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-19 15:08:34,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-02-19 15:08:34,535 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-02-19 15:08:34,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 3484 transitions, 165808 flow. Second operand has 18 states, 18 states have (on average 8.555555555555555) internal successors, (154), 18 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:08:34,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:08:34,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-02-19 15:08:34,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:08:42,180 INFO L124 PetriNetUnfolderBase]: 6139/9208 cut-off events. [2024-02-19 15:08:42,180 INFO L125 PetriNetUnfolderBase]: For 103411/103411 co-relation queries the response was YES. [2024-02-19 15:08:42,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220192 conditions, 9208 events. 6139/9208 cut-off events. For 103411/103411 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 52352 event pairs, 35 based on Foata normal form. 0/6849 useless extension candidates. Maximal degree in co-relation 110341. Up to 8297 conditions per place. [2024-02-19 15:08:42,303 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 2837 selfloop transitions, 319 changer transitions 411/3659 dead transitions. [2024-02-19 15:08:42,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 3659 transitions, 181270 flow [2024-02-19 15:08:42,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 15:08:42,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 15:08:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-02-19 15:08:42,304 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49137931034482757 [2024-02-19 15:08:42,305 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-02-19 15:08:42,305 INFO L507 AbstractCegarLoop]: Abstraction has has 303 places, 3659 transitions, 181270 flow [2024-02-19 15:08:42,305 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.555555555555555) internal successors, (154), 18 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:08:42,305 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:08:42,305 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-19 15:08:42,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-02-19 15:08:42,505 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:08:42,506 INFO L432 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:08:42,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:08:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1779182798, now seen corresponding path program 1 times [2024-02-19 15:08:42,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:08:42,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715112216] [2024-02-19 15:08:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:08:42,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:08:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:08:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:08:42,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:08:42,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715112216] [2024-02-19 15:08:42,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715112216] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:08:42,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162250668] [2024-02-19 15:08:42,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:08:42,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:08:42,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:08:42,592 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:08:42,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-02-19 15:08:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:08:42,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:08:42,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:08:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:08:42,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:08:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:08:42,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162250668] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:08:42,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:08:42,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-02-19 15:08:42,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739533225] [2024-02-19 15:08:42,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:08:42,848 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-19 15:08:42,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:08:42,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-19 15:08:42,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-02-19 15:08:42,859 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:08:42,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 3659 transitions, 181270 flow. Second operand has 19 states, 19 states have (on average 7.157894736842105) internal successors, (136), 19 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:08:42,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:08:42,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:08:42,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:08:52,649 INFO L124 PetriNetUnfolderBase]: 6339/9522 cut-off events. [2024-02-19 15:08:52,649 INFO L125 PetriNetUnfolderBase]: For 104808/104808 co-relation queries the response was YES. [2024-02-19 15:08:52,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237304 conditions, 9522 events. 6339/9522 cut-off events. For 104808/104808 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 54491 event pairs, 25 based on Foata normal form. 0/7135 useless extension candidates. Maximal degree in co-relation 122262. Up to 8607 conditions per place. [2024-02-19 15:08:53,022 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 2890 selfloop transitions, 347 changer transitions 590/3868 dead transitions. [2024-02-19 15:08:53,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 3868 transitions, 199248 flow [2024-02-19 15:08:53,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-02-19 15:08:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-02-19 15:08:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 211 transitions. [2024-02-19 15:08:53,023 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4850574712643678 [2024-02-19 15:08:53,023 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 286 predicate places. [2024-02-19 15:08:53,023 INFO L507 AbstractCegarLoop]: Abstraction has has 317 places, 3868 transitions, 199248 flow [2024-02-19 15:08:53,024 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.157894736842105) internal successors, (136), 19 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:08:53,024 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:08:53,024 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-19 15:08:53,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-02-19 15:08:53,224 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:08:53,225 INFO L432 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:08:53,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:08:53,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1051851466, now seen corresponding path program 2 times [2024-02-19 15:08:53,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:08:53,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687114052] [2024-02-19 15:08:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:08:53,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:08:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:08:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:08:53,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:08:53,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687114052] [2024-02-19 15:08:53,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687114052] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:08:53,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656800651] [2024-02-19 15:08:53,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:08:53,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:08:53,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:08:53,333 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:08:53,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-02-19 15:08:53,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:08:53,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:08:53,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:08:53,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:08:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:08:53,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:08:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:08:53,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656800651] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:08:53,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:08:53,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-02-19 15:08:53,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720487254] [2024-02-19 15:08:53,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:08:53,621 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-19 15:08:53,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:08:53,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-19 15:08:53,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-02-19 15:08:53,631 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:08:53,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 3868 transitions, 199248 flow. Second operand has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:08:53,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:08:53,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:08:53,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:09:04,493 INFO L124 PetriNetUnfolderBase]: 6948/10359 cut-off events. [2024-02-19 15:09:04,493 INFO L125 PetriNetUnfolderBase]: For 116020/116020 co-relation queries the response was YES. [2024-02-19 15:09:04,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269027 conditions, 10359 events. 6948/10359 cut-off events. For 116020/116020 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 59481 event pairs, 23 based on Foata normal form. 0/7766 useless extension candidates. Maximal degree in co-relation 147788. Up to 9398 conditions per place. [2024-02-19 15:09:04,678 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 3055 selfloop transitions, 479 changer transitions 689/4264 dead transitions. [2024-02-19 15:09:04,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 4264 transitions, 228383 flow [2024-02-19 15:09:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-19 15:09:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-19 15:09:04,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-02-19 15:09:04,679 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46551724137931033 [2024-02-19 15:09:04,679 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-02-19 15:09:04,679 INFO L507 AbstractCegarLoop]: Abstraction has has 328 places, 4264 transitions, 228383 flow [2024-02-19 15:09:04,680 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:09:04,680 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:09:04,680 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-19 15:09:04,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-02-19 15:09:04,880 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-02-19 15:09:04,881 INFO L432 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:09:04,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:09:04,882 INFO L85 PathProgramCache]: Analyzing trace with hash -264305838, now seen corresponding path program 3 times [2024-02-19 15:09:04,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:09:04,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078122439] [2024-02-19 15:09:04,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:09:04,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:09:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:09:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:09:04,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:09:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078122439] [2024-02-19 15:09:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078122439] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:09:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038406631] [2024-02-19 15:09:04,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:09:04,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:09:04,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:09:04,981 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:09:04,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-02-19 15:09:05,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 15:09:05,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:09:05,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:09:05,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:09:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:09:05,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:09:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:09:05,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038406631] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:09:05,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:09:05,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-02-19 15:09:05,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160642918] [2024-02-19 15:09:05,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:09:05,263 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-19 15:09:05,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:09:05,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-19 15:09:05,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-02-19 15:09:05,273 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:09:05,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 4264 transitions, 228383 flow. Second operand has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 21 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:09:05,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:09:05,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:09:05,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:09:17,743 INFO L124 PetriNetUnfolderBase]: 6945/10420 cut-off events. [2024-02-19 15:09:17,743 INFO L125 PetriNetUnfolderBase]: For 121894/121894 co-relation queries the response was YES. [2024-02-19 15:09:17,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280820 conditions, 10420 events. 6945/10420 cut-off events. For 121894/121894 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 60714 event pairs, 25 based on Foata normal form. 0/7885 useless extension candidates. Maximal degree in co-relation 155148. Up to 9457 conditions per place. [2024-02-19 15:09:17,914 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 3071 selfloop transitions, 457 changer transitions 750/4319 dead transitions. [2024-02-19 15:09:17,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 4319 transitions, 239928 flow [2024-02-19 15:09:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-19 15:09:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-19 15:09:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-02-19 15:09:17,915 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46264367816091956 [2024-02-19 15:09:17,915 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-02-19 15:09:17,915 INFO L507 AbstractCegarLoop]: Abstraction has has 339 places, 4319 transitions, 239928 flow [2024-02-19 15:09:17,916 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 21 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:09:17,916 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:09:17,916 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-19 15:09:17,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-02-19 15:09:18,127 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-02-19 15:09:18,128 INFO L432 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:09:18,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:09:18,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1305881906, now seen corresponding path program 4 times [2024-02-19 15:09:18,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:09:18,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13055613] [2024-02-19 15:09:18,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:09:18,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:09:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:09:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:09:18,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:09:18,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13055613] [2024-02-19 15:09:18,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13055613] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:09:18,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591757813] [2024-02-19 15:09:18,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:09:18,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:09:18,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:09:18,237 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:09:18,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-02-19 15:09:18,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:09:18,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:09:18,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:09:18,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:09:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:09:18,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:09:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:09:18,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591757813] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:09:18,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:09:18,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-02-19 15:09:18,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815128320] [2024-02-19 15:09:18,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:09:18,677 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-19 15:09:18,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:09:18,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-19 15:09:18,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-02-19 15:09:18,685 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:09:18,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 4319 transitions, 239928 flow. Second operand has 19 states, 19 states have (on average 7.105263157894737) internal successors, (135), 19 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:09:18,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:09:18,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:09:18,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:09:32,380 INFO L124 PetriNetUnfolderBase]: 7329/10972 cut-off events. [2024-02-19 15:09:32,380 INFO L125 PetriNetUnfolderBase]: For 129582/129582 co-relation queries the response was YES. [2024-02-19 15:09:32,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306843 conditions, 10972 events. 7329/10972 cut-off events. For 129582/129582 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 64261 event pairs, 15 based on Foata normal form. 0/8317 useless extension candidates. Maximal degree in co-relation 176629. Up to 9997 conditions per place. [2024-02-19 15:09:32,535 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 3389 selfloop transitions, 436 changer transitions 893/4759 dead transitions. [2024-02-19 15:09:32,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 4759 transitions, 274090 flow [2024-02-19 15:09:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-19 15:09:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-19 15:09:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-02-19 15:09:32,537 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5078369905956113 [2024-02-19 15:09:32,541 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-02-19 15:09:32,541 INFO L507 AbstractCegarLoop]: Abstraction has has 349 places, 4759 transitions, 274090 flow [2024-02-19 15:09:32,541 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.105263157894737) internal successors, (135), 19 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:09:32,541 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:09:32,542 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-19 15:09:32,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-02-19 15:09:32,742 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-02-19 15:09:32,743 INFO L432 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:09:32,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:09:32,743 INFO L85 PathProgramCache]: Analyzing trace with hash 545505200, now seen corresponding path program 5 times [2024-02-19 15:09:32,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:09:32,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772334924] [2024-02-19 15:09:32,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:09:32,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:09:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:09:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:09:32,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:09:32,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772334924] [2024-02-19 15:09:32,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772334924] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:09:32,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125408210] [2024-02-19 15:09:32,842 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:09:32,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:09:32,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:09:32,845 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:09:32,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-02-19 15:09:32,980 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:09:32,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:09:32,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:09:32,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:09:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:09:33,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:09:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:09:33,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125408210] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:09:33,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:09:33,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-02-19 15:09:33,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750240441] [2024-02-19 15:09:33,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:09:33,126 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-19 15:09:33,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:09:33,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-19 15:09:33,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2024-02-19 15:09:33,130 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:09:33,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 4759 transitions, 274090 flow. Second operand has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:09:33,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:09:33,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:09:33,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:09:49,545 INFO L124 PetriNetUnfolderBase]: 7189/10832 cut-off events. [2024-02-19 15:09:49,545 INFO L125 PetriNetUnfolderBase]: For 134032/134032 co-relation queries the response was YES. [2024-02-19 15:09:49,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313344 conditions, 10832 events. 7189/10832 cut-off events. For 134032/134032 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 64069 event pairs, 25 based on Foata normal form. 0/8317 useless extension candidates. Maximal degree in co-relation 179068. Up to 9857 conditions per place. [2024-02-19 15:09:49,705 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 3315 selfloop transitions, 396 changer transitions 973/4725 dead transitions. [2024-02-19 15:09:49,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 4725 transitions, 281450 flow [2024-02-19 15:09:49,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-19 15:09:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-19 15:09:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-02-19 15:09:49,709 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4454022988505747 [2024-02-19 15:09:49,710 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-02-19 15:09:49,710 INFO L507 AbstractCegarLoop]: Abstraction has has 360 places, 4725 transitions, 281450 flow [2024-02-19 15:09:49,710 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:09:49,710 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:09:49,710 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-19 15:09:49,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-02-19 15:09:49,917 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-02-19 15:09:49,917 INFO L432 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:09:49,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:09:49,917 INFO L85 PathProgramCache]: Analyzing trace with hash -770652104, now seen corresponding path program 6 times [2024-02-19 15:09:49,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:09:49,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453038036] [2024-02-19 15:09:49,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:09:49,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:09:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:09:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:09:50,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:09:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453038036] [2024-02-19 15:09:50,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453038036] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:09:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330405528] [2024-02-19 15:09:50,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:09:50,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:09:50,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:09:50,037 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:09:50,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-02-19 15:09:50,191 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 15:09:50,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:09:50,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:09:50,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:09:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:09:50,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:09:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:09:50,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330405528] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:09:50,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:09:50,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-02-19 15:09:50,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201378621] [2024-02-19 15:09:50,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:09:50,372 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-19 15:09:50,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:09:50,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-19 15:09:50,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-02-19 15:09:50,382 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:09:50,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 4725 transitions, 281450 flow. Second operand has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 21 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:09:50,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:09:50,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:09:50,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:10:09,362 INFO L124 PetriNetUnfolderBase]: 7175/10975 cut-off events. [2024-02-19 15:10:09,362 INFO L125 PetriNetUnfolderBase]: For 147929/147929 co-relation queries the response was YES. [2024-02-19 15:10:09,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328282 conditions, 10975 events. 7175/10975 cut-off events. For 147929/147929 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 66846 event pairs, 25 based on Foata normal form. 0/8554 useless extension candidates. Maximal degree in co-relation 188560. Up to 9994 conditions per place. [2024-02-19 15:10:09,536 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 3244 selfloop transitions, 444 changer transitions 1125/4854 dead transitions. [2024-02-19 15:10:09,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 4854 transitions, 298928 flow [2024-02-19 15:10:09,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-19 15:10:09,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-19 15:10:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 174 transitions. [2024-02-19 15:10:09,538 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-02-19 15:10:09,538 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-02-19 15:10:09,538 INFO L507 AbstractCegarLoop]: Abstraction has has 372 places, 4854 transitions, 298928 flow [2024-02-19 15:10:09,538 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 21 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:10:09,538 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:10:09,538 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:10:09,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-02-19 15:10:09,739 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:10:09,739 INFO L432 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:10:09,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:10:09,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1072885951, now seen corresponding path program 8 times [2024-02-19 15:10:09,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:10:09,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542548465] [2024-02-19 15:10:09,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:10:09,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:10:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:10:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:10:09,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:10:09,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542548465] [2024-02-19 15:10:09,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542548465] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:10:09,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562695378] [2024-02-19 15:10:09,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:10:09,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:10:09,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:10:09,825 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:10:09,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-02-19 15:10:09,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:10:09,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:10:09,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 15:10:09,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:10:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:10:10,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:10:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:10:10,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562695378] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:10:10,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:10:10,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-02-19 15:10:10,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59551171] [2024-02-19 15:10:10,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:10:10,085 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-19 15:10:10,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:10:10,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-19 15:10:10,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-02-19 15:10:10,088 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-02-19 15:10:10,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 4854 transitions, 298928 flow. Second operand has 17 states, 17 states have (on average 8.117647058823529) internal successors, (138), 17 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:10:10,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:10:10,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-02-19 15:10:10,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:10:30,156 INFO L124 PetriNetUnfolderBase]: 6321/9922 cut-off events. [2024-02-19 15:10:30,157 INFO L125 PetriNetUnfolderBase]: For 154340/154340 co-relation queries the response was YES. [2024-02-19 15:10:30,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305270 conditions, 9922 events. 6321/9922 cut-off events. For 154340/154340 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 62298 event pairs, 25 based on Foata normal form. 0/8113 useless extension candidates. Maximal degree in co-relation 162962. Up to 8964 conditions per place. [2024-02-19 15:10:30,304 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 2237 selfloop transitions, 190 changer transitions 1828/4345 dead transitions. [2024-02-19 15:10:30,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 4345 transitions, 275887 flow [2024-02-19 15:10:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 15:10:30,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 15:10:30,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-02-19 15:10:30,305 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49137931034482757 [2024-02-19 15:10:30,305 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-02-19 15:10:30,305 INFO L507 AbstractCegarLoop]: Abstraction has has 379 places, 4345 transitions, 275887 flow [2024-02-19 15:10:30,305 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.117647058823529) internal successors, (138), 17 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:10:30,306 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:10:30,306 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:10:30,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-02-19 15:10:30,516 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:10:30,516 INFO L432 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:10:30,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:10:30,517 INFO L85 PathProgramCache]: Analyzing trace with hash -812033214, now seen corresponding path program 6 times [2024-02-19 15:10:30,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:10:30,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125151507] [2024-02-19 15:10:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:10:30,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:10:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:10:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:10:30,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:10:30,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125151507] [2024-02-19 15:10:30,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125151507] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:10:30,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115085086] [2024-02-19 15:10:30,612 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:10:30,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:10:30,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:10:30,613 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:10:30,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-02-19 15:10:30,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 15:10:30,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:10:30,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:10:30,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:10:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:10:30,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:10:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:10:30,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115085086] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:10:30,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:10:30,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-02-19 15:10:30,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685956814] [2024-02-19 15:10:30,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:10:30,932 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-19 15:10:30,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:10:30,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-19 15:10:30,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-02-19 15:10:30,935 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-02-19 15:10:30,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 4345 transitions, 275887 flow. Second operand has 17 states, 17 states have (on average 8.764705882352942) internal successors, (149), 17 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:10:30,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:10:30,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-02-19 15:10:30,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:10:45,519 INFO L124 PetriNetUnfolderBase]: 5139/8184 cut-off events. [2024-02-19 15:10:45,519 INFO L125 PetriNetUnfolderBase]: For 151318/151318 co-relation queries the response was YES. [2024-02-19 15:10:45,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258715 conditions, 8184 events. 5139/8184 cut-off events. For 151318/151318 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 50852 event pairs, 25 based on Foata normal form. 0/6853 useless extension candidates. Maximal degree in co-relation 117526. Up to 7358 conditions per place. [2024-02-19 15:10:45,624 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 1279 selfloop transitions, 4 changer transitions 2246/3567 dead transitions. [2024-02-19 15:10:45,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 3567 transitions, 232932 flow [2024-02-19 15:10:45,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 15:10:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 15:10:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-02-19 15:10:45,625 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2024-02-19 15:10:45,625 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-02-19 15:10:45,625 INFO L507 AbstractCegarLoop]: Abstraction has has 375 places, 3567 transitions, 232932 flow [2024-02-19 15:10:45,625 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.764705882352942) internal successors, (149), 17 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:10:45,625 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:10:45,626 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:10:45,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-02-19 15:10:45,828 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-02-19 15:10:45,829 INFO L432 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:10:45,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:10:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1778399010, now seen corresponding path program 7 times [2024-02-19 15:10:45,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:10:45,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943211326] [2024-02-19 15:10:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:10:45,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:10:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:10:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:10:45,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:10:45,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943211326] [2024-02-19 15:10:45,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943211326] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:10:45,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167283182] [2024-02-19 15:10:45,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:10:45,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:10:45,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:10:45,957 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:10:45,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-02-19 15:10:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:10:46,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 15:10:46,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:10:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:10:46,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:10:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:10:46,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167283182] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:10:46,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:10:46,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-02-19 15:10:46,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926207191] [2024-02-19 15:10:46,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:10:46,222 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-19 15:10:46,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:10:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-19 15:10:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-02-19 15:10:46,224 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-02-19 15:10:46,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 3567 transitions, 232932 flow. Second operand has 18 states, 18 states have (on average 8.055555555555555) internal successors, (145), 18 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:10:46,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:10:46,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-02-19 15:10:46,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:10:54,423 INFO L124 PetriNetUnfolderBase]: 4283/6865 cut-off events. [2024-02-19 15:10:54,424 INFO L125 PetriNetUnfolderBase]: For 152799/152799 co-relation queries the response was YES. [2024-02-19 15:10:54,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222673 conditions, 6865 events. 4283/6865 cut-off events. For 152799/152799 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 42207 event pairs, 51 based on Foata normal form. 0/6028 useless extension candidates. Maximal degree in co-relation 117974. Up to 6079 conditions per place. [2024-02-19 15:10:54,509 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 719 selfloop transitions, 154 changer transitions 2199/3105 dead transitions. [2024-02-19 15:10:54,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 3105 transitions, 208171 flow [2024-02-19 15:10:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 15:10:54,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 15:10:54,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-02-19 15:10:54,510 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45977011494252873 [2024-02-19 15:10:54,511 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-02-19 15:10:54,511 INFO L507 AbstractCegarLoop]: Abstraction has has 380 places, 3105 transitions, 208171 flow [2024-02-19 15:10:54,511 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.055555555555555) internal successors, (145), 18 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:10:54,511 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:10:54,511 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:10:54,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-02-19 15:10:54,711 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:10:54,712 INFO L432 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:10:54,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:10:54,712 INFO L85 PathProgramCache]: Analyzing trace with hash -782623168, now seen corresponding path program 9 times [2024-02-19 15:10:54,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:10:54,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724910611] [2024-02-19 15:10:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:10:54,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:10:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:10:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:10:54,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:10:54,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724910611] [2024-02-19 15:10:54,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724910611] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:10:54,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155635671] [2024-02-19 15:10:54,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:10:54,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:10:54,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:10:54,883 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:10:54,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-02-19 15:10:55,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 15:10:55,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:10:55,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:10:55,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:10:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-19 15:10:55,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:10:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-19 15:10:55,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155635671] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:10:55,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:10:55,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2024-02-19 15:10:55,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854212647] [2024-02-19 15:10:55,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:10:55,145 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-19 15:10:55,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:10:55,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-19 15:10:55,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-02-19 15:10:55,151 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-02-19 15:10:55,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 3105 transitions, 208171 flow. Second operand has 18 states, 18 states have (on average 6.722222222222222) internal successors, (121), 18 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:10:55,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:10:55,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-02-19 15:10:55,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:03,427 INFO L124 PetriNetUnfolderBase]: 4549/7267 cut-off events. [2024-02-19 15:11:03,428 INFO L125 PetriNetUnfolderBase]: For 157762/157762 co-relation queries the response was YES. [2024-02-19 15:11:03,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243199 conditions, 7267 events. 4549/7267 cut-off events. For 157762/157762 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 44594 event pairs, 53 based on Foata normal form. 0/6318 useless extension candidates. Maximal degree in co-relation 121591. Up to 6469 conditions per place. [2024-02-19 15:11:03,523 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 799 selfloop transitions, 363 changer transitions 2203/3366 dead transitions. [2024-02-19 15:11:03,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 3366 transitions, 232180 flow [2024-02-19 15:11:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-02-19 15:11:03,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-02-19 15:11:03,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 292 transitions. [2024-02-19 15:11:03,524 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43778110944527737 [2024-02-19 15:11:03,524 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 371 predicate places. [2024-02-19 15:11:03,525 INFO L507 AbstractCegarLoop]: Abstraction has has 402 places, 3366 transitions, 232180 flow [2024-02-19 15:11:03,525 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.722222222222222) internal successors, (121), 18 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:11:03,525 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:03,525 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:03,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:03,725 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:03,726 INFO L432 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:11:03,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:03,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1919046200, now seen corresponding path program 10 times [2024-02-19 15:11:03,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:03,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430786924] [2024-02-19 15:11:03,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:03,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:11:03,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:03,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430786924] [2024-02-19 15:11:03,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430786924] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:03,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332868140] [2024-02-19 15:11:03,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:11:03,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:03,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:03,845 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:03,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-02-19 15:11:03,996 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:11:03,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:03,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-19 15:11:03,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:11:04,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:11:04,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332868140] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:04,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:04,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2024-02-19 15:11:04,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911028935] [2024-02-19 15:11:04,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:04,198 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-19 15:11:04,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:04,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-19 15:11:04,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2024-02-19 15:11:04,222 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:11:04,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 3366 transitions, 232180 flow. Second operand has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:11:04,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:04,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:11:04,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:14,980 INFO L124 PetriNetUnfolderBase]: 4927/7827 cut-off events. [2024-02-19 15:11:14,980 INFO L125 PetriNetUnfolderBase]: For 166711/166711 co-relation queries the response was YES. [2024-02-19 15:11:14,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270050 conditions, 7827 events. 4927/7827 cut-off events. For 166711/166711 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 48242 event pairs, 53 based on Foata normal form. 0/6732 useless extension candidates. Maximal degree in co-relation 125130. Up to 7011 conditions per place. [2024-02-19 15:11:15,097 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 1076 selfloop transitions, 365 changer transitions 2203/3671 dead transitions. [2024-02-19 15:11:15,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 3671 transitions, 260822 flow [2024-02-19 15:11:15,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-19 15:11:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-19 15:11:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 221 transitions. [2024-02-19 15:11:15,101 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2024-02-19 15:11:15,102 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 387 predicate places. [2024-02-19 15:11:15,102 INFO L507 AbstractCegarLoop]: Abstraction has has 418 places, 3671 transitions, 260822 flow [2024-02-19 15:11:15,102 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:11:15,102 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:15,102 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:15,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-02-19 15:11:15,308 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-02-19 15:11:15,308 INFO L432 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:11:15,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:15,309 INFO L85 PathProgramCache]: Analyzing trace with hash 430092020, now seen corresponding path program 11 times [2024-02-19 15:11:15,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:15,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744523614] [2024-02-19 15:11:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:15,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:11:15,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:15,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744523614] [2024-02-19 15:11:15,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744523614] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:15,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585580842] [2024-02-19 15:11:15,423 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:11:15,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:15,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:15,424 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:15,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-02-19 15:11:15,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:11:15,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:15,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:11:15,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-19 15:11:15,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-19 15:11:15,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585580842] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:15,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:15,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2024-02-19 15:11:15,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175987188] [2024-02-19 15:11:15,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:15,752 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-19 15:11:15,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:15,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-19 15:11:15,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-02-19 15:11:15,754 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-02-19 15:11:15,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 3671 transitions, 260822 flow. Second operand has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 19 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:11:15,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:15,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-02-19 15:11:15,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:28,235 INFO L124 PetriNetUnfolderBase]: 4900/7774 cut-off events. [2024-02-19 15:11:28,235 INFO L125 PetriNetUnfolderBase]: For 164919/164919 co-relation queries the response was YES. [2024-02-19 15:11:28,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276013 conditions, 7774 events. 4900/7774 cut-off events. For 164919/164919 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 47815 event pairs, 53 based on Foata normal form. 0/6727 useless extension candidates. Maximal degree in co-relation 128747. Up to 6962 conditions per place. [2024-02-19 15:11:28,343 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 927 selfloop transitions, 516 changer transitions 2203/3647 dead transitions. [2024-02-19 15:11:28,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 3647 transitions, 266155 flow [2024-02-19 15:11:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-02-19 15:11:28,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-02-19 15:11:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 428 transitions. [2024-02-19 15:11:28,346 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38838475499092556 [2024-02-19 15:11:28,346 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 423 predicate places. [2024-02-19 15:11:28,347 INFO L507 AbstractCegarLoop]: Abstraction has has 454 places, 3647 transitions, 266155 flow [2024-02-19 15:11:28,347 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 19 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:11:28,347 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:28,347 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:28,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:28,547 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-02-19 15:11:28,548 INFO L432 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:11:28,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash 417587900, now seen corresponding path program 8 times [2024-02-19 15:11:28,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:28,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077742067] [2024-02-19 15:11:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:28,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:11:28,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:28,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077742067] [2024-02-19 15:11:28,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077742067] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:28,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622737248] [2024-02-19 15:11:28,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:11:28,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:28,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:28,661 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:28,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-02-19 15:11:28,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:11:28,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:28,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-19 15:11:28,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:11:28,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:11:29,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622737248] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:29,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:29,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2024-02-19 15:11:29,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145652657] [2024-02-19 15:11:29,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:29,013 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-19 15:11:29,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:29,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-19 15:11:29,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-02-19 15:11:29,028 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:11:29,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 3647 transitions, 266155 flow. Second operand has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 23 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:11:29,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:29,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:11:29,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:40,777 INFO L124 PetriNetUnfolderBase]: 5290/8351 cut-off events. [2024-02-19 15:11:40,777 INFO L125 PetriNetUnfolderBase]: For 172641/172641 co-relation queries the response was YES. [2024-02-19 15:11:40,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304858 conditions, 8351 events. 5290/8351 cut-off events. For 172641/172641 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 51196 event pairs, 53 based on Foata normal form. 0/7130 useless extension candidates. Maximal degree in co-relation 146000. Up to 7500 conditions per place. [2024-02-19 15:11:41,070 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 1330 selfloop transitions, 315 changer transitions 2203/3881 dead transitions. [2024-02-19 15:11:41,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 3881 transitions, 291069 flow [2024-02-19 15:11:41,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-19 15:11:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-19 15:11:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-02-19 15:11:41,071 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-02-19 15:11:41,071 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 433 predicate places. [2024-02-19 15:11:41,072 INFO L507 AbstractCegarLoop]: Abstraction has has 464 places, 3881 transitions, 291069 flow [2024-02-19 15:11:41,072 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 23 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:11:41,072 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:41,072 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:41,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:41,277 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-02-19 15:11:41,277 INFO L432 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:11:41,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:41,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1444003896, now seen corresponding path program 9 times [2024-02-19 15:11:41,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:41,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869306930] [2024-02-19 15:11:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:41,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:11:41,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:41,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869306930] [2024-02-19 15:11:41,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869306930] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:41,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261879349] [2024-02-19 15:11:41,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:11:41,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:41,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:41,386 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:41,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-02-19 15:11:41,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 15:11:41,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:41,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:11:41,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-19 15:11:41,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-19 15:11:41,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261879349] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:41,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:41,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2024-02-19 15:11:41,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637531014] [2024-02-19 15:11:41,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:41,710 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-19 15:11:41,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:41,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-19 15:11:41,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-02-19 15:11:41,715 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-02-19 15:11:41,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 3881 transitions, 291069 flow. Second operand has 18 states, 18 states have (on average 6.555555555555555) internal successors, (118), 18 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:11:41,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:41,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-02-19 15:11:41,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:55,576 INFO L124 PetriNetUnfolderBase]: 5299/8366 cut-off events. [2024-02-19 15:11:55,576 INFO L125 PetriNetUnfolderBase]: For 177175/177175 co-relation queries the response was YES. [2024-02-19 15:11:55,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313751 conditions, 8366 events. 5299/8366 cut-off events. For 177175/177175 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 51336 event pairs, 53 based on Foata normal form. 0/7153 useless extension candidates. Maximal degree in co-relation 150382. Up to 7513 conditions per place. [2024-02-19 15:11:55,700 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 1301 selfloop transitions, 385 changer transitions 2203/3890 dead transitions. [2024-02-19 15:11:55,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 3890 transitions, 299461 flow [2024-02-19 15:11:55,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-02-19 15:11:55,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-02-19 15:11:55,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 276 transitions. [2024-02-19 15:11:55,707 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-02-19 15:11:55,707 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 455 predicate places. [2024-02-19 15:11:55,707 INFO L507 AbstractCegarLoop]: Abstraction has has 486 places, 3890 transitions, 299461 flow [2024-02-19 15:11:55,708 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.555555555555555) internal successors, (118), 18 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:11:55,708 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:55,708 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:55,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-02-19 15:11:55,913 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:55,914 INFO L432 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:11:55,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:55,914 INFO L85 PathProgramCache]: Analyzing trace with hash -354022374, now seen corresponding path program 10 times [2024-02-19 15:11:55,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:55,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267909486] [2024-02-19 15:11:55,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:55,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:11:56,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:56,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267909486] [2024-02-19 15:11:56,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267909486] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:56,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779150810] [2024-02-19 15:11:56,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:11:56,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:56,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:56,049 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:11:56,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-02-19 15:11:56,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:11:56,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:56,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-19 15:11:56,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:11:56,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:11:56,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779150810] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:56,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:56,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2024-02-19 15:11:56,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332556619] [2024-02-19 15:11:56,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:56,403 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-19 15:11:56,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-19 15:11:56,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2024-02-19 15:11:56,413 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:11:56,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 3890 transitions, 299461 flow. Second operand has 23 states, 23 states have (on average 6.869565217391305) internal successors, (158), 23 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:11:56,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:56,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:11:56,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:12:09,922 INFO L124 PetriNetUnfolderBase]: 5324/8409 cut-off events. [2024-02-19 15:12:09,922 INFO L125 PetriNetUnfolderBase]: For 183478/183478 co-relation queries the response was YES. [2024-02-19 15:12:09,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323530 conditions, 8409 events. 5324/8409 cut-off events. For 183478/183478 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 51625 event pairs, 53 based on Foata normal form. 0/7194 useless extension candidates. Maximal degree in co-relation 155752. Up to 7554 conditions per place. [2024-02-19 15:12:10,054 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 1470 selfloop transitions, 206 changer transitions 2203/3914 dead transitions. [2024-02-19 15:12:10,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 3914 transitions, 309059 flow [2024-02-19 15:12:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-19 15:12:10,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-19 15:12:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-02-19 15:12:10,055 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4339080459770115 [2024-02-19 15:12:10,055 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 466 predicate places. [2024-02-19 15:12:10,055 INFO L507 AbstractCegarLoop]: Abstraction has has 497 places, 3914 transitions, 309059 flow [2024-02-19 15:12:10,056 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.869565217391305) internal successors, (158), 23 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:12:10,056 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:12:10,056 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:12:10,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-02-19 15:12:10,267 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-02-19 15:12:10,268 INFO L432 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:12:10,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:12:10,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1756158716, now seen corresponding path program 11 times [2024-02-19 15:12:10,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:12:10,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939235745] [2024-02-19 15:12:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:12:10,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:12:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:12:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:12:10,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:12:10,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939235745] [2024-02-19 15:12:10,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939235745] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:12:10,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298808849] [2024-02-19 15:12:10,378 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:12:10,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:12:10,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:12:10,379 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:12:10,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-02-19 15:12:10,530 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:12:10,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:12:10,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:12:10,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:12:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-19 15:12:10,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:12:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-19 15:12:10,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298808849] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:12:10,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:12:10,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-02-19 15:12:10,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620532313] [2024-02-19 15:12:10,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:12:10,679 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-19 15:12:10,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:12:10,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-19 15:12:10,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-02-19 15:12:10,683 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-02-19 15:12:10,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 3914 transitions, 309059 flow. Second operand has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 21 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:12:10,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:12:10,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-02-19 15:12:10,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:12:26,905 INFO L124 PetriNetUnfolderBase]: 5834/9181 cut-off events. [2024-02-19 15:12:26,905 INFO L125 PetriNetUnfolderBase]: For 182736/182736 co-relation queries the response was YES. [2024-02-19 15:12:26,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362813 conditions, 9181 events. 5834/9181 cut-off events. For 182736/182736 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 56519 event pairs, 53 based on Foata normal form. 0/7750 useless extension candidates. Maximal degree in co-relation 188770. Up to 8290 conditions per place. [2024-02-19 15:12:27,058 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 1345 selfloop transitions, 711 changer transitions 2203/4260 dead transitions. [2024-02-19 15:12:27,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 4260 transitions, 344335 flow [2024-02-19 15:12:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-02-19 15:12:27,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-02-19 15:12:27,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 531 transitions. [2024-02-19 15:12:27,060 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38958180484225974 [2024-02-19 15:12:27,060 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 512 predicate places. [2024-02-19 15:12:27,060 INFO L507 AbstractCegarLoop]: Abstraction has has 543 places, 4260 transitions, 344335 flow [2024-02-19 15:12:27,060 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 21 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:12:27,060 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:12:27,061 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:12:27,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-02-19 15:12:27,272 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-02-19 15:12:27,272 INFO L432 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:12:27,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:12:27,273 INFO L85 PathProgramCache]: Analyzing trace with hash 267204536, now seen corresponding path program 12 times [2024-02-19 15:12:27,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:12:27,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225452358] [2024-02-19 15:12:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:12:27,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:12:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:12:27,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:12:27,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:12:27,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225452358] [2024-02-19 15:12:27,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225452358] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:12:27,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362180353] [2024-02-19 15:12:27,384 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:12:27,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:12:27,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:12:27,385 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:12:27,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-02-19 15:12:27,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-19 15:12:27,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:12:27,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-19 15:12:27,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:12:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:12:27,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:12:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:12:27,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362180353] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:12:27,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:12:27,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2024-02-19 15:12:27,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107182964] [2024-02-19 15:12:27,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:12:27,744 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 15:12:27,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:12:27,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 15:12:27,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2024-02-19 15:12:27,748 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:12:27,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 4260 transitions, 344335 flow. Second operand has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:12:27,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:12:27,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:12:27,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:12:44,989 INFO L124 PetriNetUnfolderBase]: 5769/9064 cut-off events. [2024-02-19 15:12:44,990 INFO L125 PetriNetUnfolderBase]: For 193012/193012 co-relation queries the response was YES. [2024-02-19 15:12:45,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366933 conditions, 9064 events. 5769/9064 cut-off events. For 193012/193012 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 55580 event pairs, 53 based on Foata normal form. 0/7683 useless extension candidates. Maximal degree in co-relation 189102. Up to 8179 conditions per place. [2024-02-19 15:12:45,142 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 1470 selfloop transitions, 460 changer transitions 2203/4191 dead transitions. [2024-02-19 15:12:45,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 4191 transitions, 346967 flow [2024-02-19 15:12:45,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-19 15:12:45,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-19 15:12:45,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 259 transitions. [2024-02-19 15:12:45,143 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47005444646098005 [2024-02-19 15:12:45,143 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 530 predicate places. [2024-02-19 15:12:45,144 INFO L507 AbstractCegarLoop]: Abstraction has has 561 places, 4191 transitions, 346967 flow [2024-02-19 15:12:45,144 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:12:45,144 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:12:45,144 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:12:45,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-02-19 15:12:45,355 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:12:45,356 INFO L432 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:12:45,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:12:45,356 INFO L85 PathProgramCache]: Analyzing trace with hash 901102136, now seen corresponding path program 12 times [2024-02-19 15:12:45,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:12:45,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008679107] [2024-02-19 15:12:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:12:45,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:12:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:12:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:12:45,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:12:45,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008679107] [2024-02-19 15:12:45,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008679107] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:12:45,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257364463] [2024-02-19 15:12:45,462 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:12:45,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:12:45,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:12:45,463 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:12:45,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-02-19 15:12:45,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-19 15:12:45,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:12:45,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-19 15:12:45,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:12:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:12:45,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:12:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:12:45,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257364463] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:12:45,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:12:45,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-02-19 15:12:45,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468248223] [2024-02-19 15:12:45,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:12:45,817 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-02-19 15:12:45,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:12:45,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-02-19 15:12:45,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2024-02-19 15:12:45,821 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:12:45,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 4191 transitions, 346967 flow. Second operand has 22 states, 22 states have (on average 6.909090909090909) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:12:45,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:12:45,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:12:45,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:13:01,460 INFO L124 PetriNetUnfolderBase]: 5807/9128 cut-off events. [2024-02-19 15:13:01,460 INFO L125 PetriNetUnfolderBase]: For 200373/200373 co-relation queries the response was YES. [2024-02-19 15:13:01,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378405 conditions, 9128 events. 5807/9128 cut-off events. For 200373/200373 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 56049 event pairs, 53 based on Foata normal form. 0/7745 useless extension candidates. Maximal degree in co-relation 196288. Up to 8241 conditions per place. [2024-02-19 15:13:01,625 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 1757 selfloop transitions, 210 changer transitions 2203/4228 dead transitions. [2024-02-19 15:13:01,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 4228 transitions, 358380 flow [2024-02-19 15:13:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-19 15:13:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-19 15:13:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-02-19 15:13:01,637 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43573667711598746 [2024-02-19 15:13:01,637 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 540 predicate places. [2024-02-19 15:13:01,637 INFO L507 AbstractCegarLoop]: Abstraction has has 571 places, 4228 transitions, 358380 flow [2024-02-19 15:13:01,638 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.909090909090909) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:13:01,638 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:13:01,638 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:13:01,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-02-19 15:13:01,848 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-02-19 15:13:01,848 INFO L432 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:13:01,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:13:01,849 INFO L85 PathProgramCache]: Analyzing trace with hash 183833204, now seen corresponding path program 13 times [2024-02-19 15:13:01,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:13:01,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955961816] [2024-02-19 15:13:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:13:01,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:13:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:13:01,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:13:01,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:13:01,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955961816] [2024-02-19 15:13:01,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955961816] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:13:01,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954222852] [2024-02-19 15:13:01,953 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:13:01,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:13:01,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:13:01,954 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:13:01,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-02-19 15:13:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:13:02,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-19 15:13:02,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:13:02,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:13:02,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:13:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:13:02,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954222852] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:13:02,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:13:02,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2024-02-19 15:13:02,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192509301] [2024-02-19 15:13:02,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:13:02,328 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-19 15:13:02,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:13:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-19 15:13:02,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2024-02-19 15:13:02,333 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:13:02,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 4228 transitions, 358380 flow. Second operand has 23 states, 23 states have (on average 6.869565217391305) internal successors, (158), 23 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:13:02,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:13:02,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:13:02,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:13:18,350 INFO L124 PetriNetUnfolderBase]: 5782/9082 cut-off events. [2024-02-19 15:13:18,350 INFO L125 PetriNetUnfolderBase]: For 210687/210687 co-relation queries the response was YES. [2024-02-19 15:13:18,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385292 conditions, 9082 events. 5782/9082 cut-off events. For 210687/210687 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 55746 event pairs, 53 based on Foata normal form. 0/7719 useless extension candidates. Maximal degree in co-relation 199156. Up to 8198 conditions per place. [2024-02-19 15:13:18,501 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 1707 selfloop transitions, 234 changer transitions 2203/4201 dead transitions. [2024-02-19 15:13:18,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 4201 transitions, 364343 flow [2024-02-19 15:13:18,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-19 15:13:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-19 15:13:18,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-02-19 15:13:18,511 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44562334217506633 [2024-02-19 15:13:18,511 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 552 predicate places. [2024-02-19 15:13:18,511 INFO L507 AbstractCegarLoop]: Abstraction has has 583 places, 4201 transitions, 364343 flow [2024-02-19 15:13:18,511 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.869565217391305) internal successors, (158), 23 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:13:18,511 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:13:18,511 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:13:18,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-02-19 15:13:18,711 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:13:18,712 INFO L432 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:13:18,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:13:18,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2077707856, now seen corresponding path program 13 times [2024-02-19 15:13:18,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:13:18,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837375556] [2024-02-19 15:13:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:13:18,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:13:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:13:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:13:18,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:13:18,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837375556] [2024-02-19 15:13:18,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837375556] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:13:18,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245581358] [2024-02-19 15:13:18,820 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:13:18,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:13:18,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:13:18,821 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:13:18,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-02-19 15:13:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:13:18,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-19 15:13:18,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:13:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:13:19,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:13:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:13:19,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245581358] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:13:19,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:13:19,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2024-02-19 15:13:19,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938926528] [2024-02-19 15:13:19,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:13:19,157 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 15:13:19,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:13:19,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 15:13:19,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2024-02-19 15:13:19,160 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:13:19,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 4201 transitions, 364343 flow. Second operand has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:13:19,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:13:19,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:13:19,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:13:34,663 INFO L124 PetriNetUnfolderBase]: 5744/9013 cut-off events. [2024-02-19 15:13:34,663 INFO L125 PetriNetUnfolderBase]: For 219266/219266 co-relation queries the response was YES. [2024-02-19 15:13:34,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391058 conditions, 9013 events. 5744/9013 cut-off events. For 219266/219266 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 55186 event pairs, 53 based on Foata normal form. 0/7678 useless extension candidates. Maximal degree in co-relation 200825. Up to 8132 conditions per place. [2024-02-19 15:13:34,831 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 1661 selfloop transitions, 239 changer transitions 2203/4159 dead transitions. [2024-02-19 15:13:34,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 4159 transitions, 368852 flow [2024-02-19 15:13:34,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-19 15:13:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-19 15:13:34,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2024-02-19 15:13:34,833 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43596059113300495 [2024-02-19 15:13:34,833 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 565 predicate places. [2024-02-19 15:13:34,834 INFO L507 AbstractCegarLoop]: Abstraction has has 596 places, 4159 transitions, 368852 flow [2024-02-19 15:13:34,834 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:13:34,834 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:13:34,834 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:13:34,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-02-19 15:13:35,044 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:13:35,044 INFO L432 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:13:35,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:13:35,045 INFO L85 PathProgramCache]: Analyzing trace with hash -976901147, now seen corresponding path program 14 times [2024-02-19 15:13:35,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:13:35,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81750488] [2024-02-19 15:13:35,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:13:35,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:13:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:13:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:36,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:13:36,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81750488] [2024-02-19 15:13:36,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81750488] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:13:36,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145249748] [2024-02-19 15:13:36,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:13:36,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:13:36,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:13:36,642 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:13:36,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-02-19 15:13:36,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:13:36,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:13:36,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 49 conjunts are in the unsatisfiable core [2024-02-19 15:13:36,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:13:36,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:13:37,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:13:37,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 139 treesize of output 83 [2024-02-19 15:13:37,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:13:37,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:13:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-19 15:13:38,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145249748] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:13:38,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:13:38,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 9] total 31 [2024-02-19 15:13:38,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299028118] [2024-02-19 15:13:38,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:13:38,573 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-19 15:13:38,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:13:38,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-19 15:13:38,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2024-02-19 15:13:38,671 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-02-19 15:13:38,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 4159 transitions, 368852 flow. Second operand has 31 states, 31 states have (on average 7.451612903225806) internal successors, (231), 31 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:13:38,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:13:38,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-02-19 15:13:38,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:14:05,268 INFO L124 PetriNetUnfolderBase]: 7583/11881 cut-off events. [2024-02-19 15:14:05,269 INFO L125 PetriNetUnfolderBase]: For 299609/299609 co-relation queries the response was YES. [2024-02-19 15:14:05,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527486 conditions, 11881 events. 7583/11881 cut-off events. For 299609/299609 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 76021 event pairs, 42 based on Foata normal form. 1/9980 useless extension candidates. Maximal degree in co-relation 264108. Up to 10851 conditions per place. [2024-02-19 15:14:05,530 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 2511 selfloop transitions, 599 changer transitions 2399/5534 dead transitions. [2024-02-19 15:14:05,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 5534 transitions, 503062 flow [2024-02-19 15:14:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-02-19 15:14:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-02-19 15:14:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 696 transitions. [2024-02-19 15:14:05,531 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-02-19 15:14:05,532 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 614 predicate places. [2024-02-19 15:14:05,532 INFO L507 AbstractCegarLoop]: Abstraction has has 645 places, 5534 transitions, 503062 flow [2024-02-19 15:14:05,532 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.451612903225806) internal successors, (231), 31 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:14:05,532 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:14:05,532 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:14:05,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-02-19 15:14:05,744 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-02-19 15:14:05,745 INFO L432 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:14:05,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:14:05,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1103431013, now seen corresponding path program 7 times [2024-02-19 15:14:05,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:14:05,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797852244] [2024-02-19 15:14:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:14:05,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:14:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:14:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:14:07,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:14:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797852244] [2024-02-19 15:14:07,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797852244] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:14:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663398265] [2024-02-19 15:14:07,545 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:14:07,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:14:07,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:14:07,546 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:14:07,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-02-19 15:14:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:14:07,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 54 conjunts are in the unsatisfiable core [2024-02-19 15:14:07,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:14:07,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:14:08,355 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:14:08,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 63 [2024-02-19 15:14:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:14:08,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:14:11,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 159 [2024-02-19 15:14:11,442 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:14:11,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 321 treesize of output 361 [2024-02-19 15:14:25,112 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-19 15:14:25,169 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-19 15:14:25,263 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-19 15:14:29,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:14:29,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663398265] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:14:29,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:14:29,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 38 [2024-02-19 15:14:29,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440957798] [2024-02-19 15:14:29,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:14:29,316 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-02-19 15:14:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:14:29,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-02-19 15:14:29,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1258, Unknown=0, NotChecked=0, Total=1482 [2024-02-19 15:14:29,351 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-02-19 15:14:29,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 5534 transitions, 503062 flow. Second operand has 39 states, 39 states have (on average 6.076923076923077) internal successors, (237), 39 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:14:29,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:14:29,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-02-19 15:14:29,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:14:34,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:14:38,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:14:52,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:15:52,737 INFO L124 PetriNetUnfolderBase]: 12279/18976 cut-off events. [2024-02-19 15:15:52,737 INFO L125 PetriNetUnfolderBase]: For 425770/425770 co-relation queries the response was YES. [2024-02-19 15:15:52,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864219 conditions, 18976 events. 12279/18976 cut-off events. For 425770/425770 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 126262 event pairs, 64 based on Foata normal form. 6/15364 useless extension candidates. Maximal degree in co-relation 334291. Up to 17663 conditions per place. [2024-02-19 15:15:53,309 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 5336 selfloop transitions, 601 changer transitions 2621/8559 dead transitions. [2024-02-19 15:15:53,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 721 places, 8559 transitions, 795434 flow [2024-02-19 15:15:53,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-02-19 15:15:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2024-02-19 15:15:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 977 transitions. [2024-02-19 15:15:53,311 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43752798925212716 [2024-02-19 15:15:53,311 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 690 predicate places. [2024-02-19 15:15:53,311 INFO L507 AbstractCegarLoop]: Abstraction has has 721 places, 8559 transitions, 795434 flow [2024-02-19 15:15:53,312 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.076923076923077) internal successors, (237), 39 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:15:53,312 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:15:53,312 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:15:53,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-02-19 15:15:53,524 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-02-19 15:15:53,524 INFO L432 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:15:53,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:15:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1815101959, now seen corresponding path program 14 times [2024-02-19 15:15:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:15:53,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209402006] [2024-02-19 15:15:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:15:53,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:15:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:15:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:15:55,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:15:55,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209402006] [2024-02-19 15:15:55,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209402006] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:15:55,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342621628] [2024-02-19 15:15:55,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:15:55,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:15:55,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:15:55,219 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:15:55,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-02-19 15:15:55,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:15:55,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:15:55,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 52 conjunts are in the unsatisfiable core [2024-02-19 15:15:55,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:15:55,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:15:56,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:15:56,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 80 [2024-02-19 15:15:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:15:56,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:15:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-19 15:15:58,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342621628] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:15:58,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:15:58,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 31 [2024-02-19 15:15:58,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528125420] [2024-02-19 15:15:58,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:15:58,272 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-19 15:15:58,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:15:58,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-19 15:15:58,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2024-02-19 15:15:58,288 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-02-19 15:15:58,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 8559 transitions, 795434 flow. Second operand has 31 states, 31 states have (on average 6.32258064516129) internal successors, (196), 31 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:15:58,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:15:58,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-02-19 15:15:58,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:17:42,077 INFO L124 PetriNetUnfolderBase]: 13573/20985 cut-off events. [2024-02-19 15:17:42,077 INFO L125 PetriNetUnfolderBase]: For 434723/434723 co-relation queries the response was YES. [2024-02-19 15:17:42,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978207 conditions, 20985 events. 13573/20985 cut-off events. For 434723/434723 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 140868 event pairs, 74 based on Foata normal form. 2/16731 useless extension candidates. Maximal degree in co-relation 390451. Up to 19659 conditions per place. [2024-02-19 15:17:42,619 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 6189 selfloop transitions, 466 changer transitions 2635/9291 dead transitions. [2024-02-19 15:17:42,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 9291 transitions, 882441 flow [2024-02-19 15:17:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-19 15:17:42,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-19 15:17:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 238 transitions. [2024-02-19 15:17:42,621 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2024-02-19 15:17:42,621 INFO L308 CegarLoopForPetriNet]: 31 programPoint places, 706 predicate places. [2024-02-19 15:17:42,621 INFO L507 AbstractCegarLoop]: Abstraction has has 737 places, 9291 transitions, 882441 flow [2024-02-19 15:17:42,621 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.32258064516129) internal successors, (196), 31 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:17:42,621 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:17:42,621 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:17:42,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-02-19 15:17:42,822 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-02-19 15:17:42,822 INFO L432 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 15:17:42,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:17:42,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1285811671, now seen corresponding path program 8 times [2024-02-19 15:17:42,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:17:42,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534726187] [2024-02-19 15:17:42,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:17:42,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:17:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:17:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:17:44,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:17:44,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534726187] [2024-02-19 15:17:44,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534726187] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:17:44,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543536963] [2024-02-19 15:17:44,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:17:44,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:17:44,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:17:44,704 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:17:44,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-02-19 15:17:44,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:17:44,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:17:44,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 57 conjunts are in the unsatisfiable core [2024-02-19 15:17:44,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:17:45,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:17:45,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:17:45,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 154 treesize of output 214 [2024-02-19 15:17:46,812 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-19 15:17:46,942 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-19 15:17:47,687 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-19 15:17:47,823 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-19 15:17:47,832 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-19 15:17:47,852 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-19 15:17:47,887 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-19 15:17:47,925 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-19 15:17:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:17:52,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:17:53,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 145 [2024-02-19 15:17:53,872 INFO L349 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2024-02-19 15:17:53,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 319 treesize of output 254 [2024-02-19 15:17:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:17:54,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543536963] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:17:54,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:17:54,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 35 [2024-02-19 15:17:54,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706116866] [2024-02-19 15:17:54,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:17:54,407 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-02-19 15:17:54,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:17:54,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-02-19 15:17:54,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1101, Unknown=0, NotChecked=0, Total=1260 [2024-02-19 15:17:54,467 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-02-19 15:17:54,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 737 places, 9291 transitions, 882441 flow. Second operand has 36 states, 36 states have (on average 6.166666666666667) internal successors, (222), 36 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:17:54,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:17:54,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-02-19 15:17:54,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15