./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.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-buffer-series2.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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --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 15:01:04,813 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 15:01:04,886 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 15:01:04,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 15:01:04,890 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 15:01:04,914 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 15:01:04,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 15:01:04,914 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 15:01:04,915 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 15:01:04,918 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 15:01:04,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 15:01:04,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 15:01:04,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 15:01:04,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 15:01:04,919 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 15:01:04,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 15:01:04,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 15:01:04,920 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 15:01:04,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 15:01:04,920 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 15:01:04,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 15:01:04,921 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 15:01:04,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 15:01:04,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 15:01:04,922 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 15:01:04,922 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 15:01:04,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 15:01:04,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 15:01:04,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 15:01:04,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 15:01:04,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 15:01:04,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 15:01:04,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 15:01:04,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 15:01:04,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 15:01:04,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 15:01:04,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 15:01:04,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 15:01:04,926 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 15:01:04,926 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 15:01:04,926 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 15:01:04,926 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 15:01:04,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 15:01:04,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 15:01:05,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 15:01:05,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 15:01:05,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 15:01:05,216 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 15:01:05,217 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 15:01:05,218 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2024-02-19 15:01:06,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 15:01:06,389 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 15:01:06,390 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2024-02-19 15:01:06,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b31a4d3/86727642eaed455088c00c6102209eee/FLAG4a64ab975 [2024-02-19 15:01:06,414 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b31a4d3/86727642eaed455088c00c6102209eee [2024-02-19 15:01:06,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 15:01:06,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 15:01:06,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 15:01:06,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 15:01:06,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 15:01:06,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2661c524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06, skipping insertion in model container [2024-02-19 15:01:06,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,450 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 15:01:06,623 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-buffer-series2.wvr.c[4232,4245] [2024-02-19 15:01:06,635 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 15:01:06,645 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 15:01:06,679 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-buffer-series2.wvr.c[4232,4245] [2024-02-19 15:01:06,687 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 15:01:06,712 INFO L206 MainTranslator]: Completed translation [2024-02-19 15:01:06,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06 WrapperNode [2024-02-19 15:01:06,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 15:01:06,713 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 15:01:06,713 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 15:01:06,713 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 15:01:06,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,771 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 356 [2024-02-19 15:01:06,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 15:01:06,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 15:01:06,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 15:01:06,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 15:01:06,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,825 INFO L175 MemorySlicer]: Split 20 memory accesses to 6 slices as follows [2, 2, 2, 10, 2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 3, 1, 1]. [2024-02-19 15:01:06,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,860 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 15:01:06,861 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 15:01:06,862 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 15:01:06,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 15:01:06,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06" (1/1) ... [2024-02-19 15:01:06,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 15:01:06,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:01:06,888 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 15:01:06,895 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 15:01:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 15:01:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 15:01:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 15:01:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 15:01:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 15:01:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 15:01:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 15:01:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-19 15:01:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 15:01:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 15:01:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 15:01:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 15:01:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 15:01:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-19 15:01:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 15:01:06,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 15:01:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 15:01:06,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 15:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 15:01:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 15:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-19 15:01:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-19 15:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 15:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 15:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 15:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 15:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 15:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-19 15:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 15:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 15:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 15:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 15:01:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 15:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 15:01:06,933 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 15:01:07,073 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 15:01:07,075 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 15:01:07,540 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 15:01:07,540 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 15:01:07,761 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 15:01:07,761 INFO L320 CfgBuilder]: Removed 7 assume(true) statements. [2024-02-19 15:01:07,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:01:07 BoogieIcfgContainer [2024-02-19 15:01:07,762 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 15:01:07,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 15:01:07,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 15:01:07,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 15:01:07,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 03:01:06" (1/3) ... [2024-02-19 15:01:07,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4ed84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:01:07, skipping insertion in model container [2024-02-19 15:01:07,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:01:06" (2/3) ... [2024-02-19 15:01:07,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4ed84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:01:07, skipping insertion in model container [2024-02-19 15:01:07,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:01:07" (3/3) ... [2024-02-19 15:01:07,769 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2024-02-19 15:01:07,782 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 15:01:07,782 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 15:01:07,782 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 15:01:07,819 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-19 15:01:07,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 126 flow [2024-02-19 15:01:07,871 INFO L124 PetriNetUnfolderBase]: 7/45 cut-off events. [2024-02-19 15:01:07,871 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-19 15:01:07,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 45 events. 7/45 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-02-19 15:01:07,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 49 transitions, 126 flow [2024-02-19 15:01:07,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 44 transitions, 112 flow [2024-02-19 15:01:07,883 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 15:01:07,887 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;@4dbd11ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 15:01:07,888 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-19 15:01:07,899 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 15:01:07,899 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2024-02-19 15:01:07,899 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-19 15:01:07,899 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:07,900 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:07,900 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 2 more)] === [2024-02-19 15:01:07,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:07,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1952241022, now seen corresponding path program 1 times [2024-02-19 15:01:07,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:07,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417375752] [2024-02-19 15:01:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:07,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:08,182 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 15:01:08,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:08,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417375752] [2024-02-19 15:01:08,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417375752] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:01:08,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:01:08,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 15:01:08,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331917338] [2024-02-19 15:01:08,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:01:08,191 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 15:01:08,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:08,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 15:01:08,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 15:01:08,213 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-02-19 15:01:08,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 15:01:08,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:08,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-02-19 15:01:08,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:08,569 INFO L124 PetriNetUnfolderBase]: 1172/1960 cut-off events. [2024-02-19 15:01:08,569 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-02-19 15:01:08,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3712 conditions, 1960 events. 1172/1960 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11358 event pairs, 277 based on Foata normal form. 1/1895 useless extension candidates. Maximal degree in co-relation 2762. Up to 1141 conditions per place. [2024-02-19 15:01:08,584 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 45 selfloop transitions, 3 changer transitions 1/62 dead transitions. [2024-02-19 15:01:08,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 261 flow [2024-02-19 15:01:08,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 15:01:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 15:01:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-02-19 15:01:08,593 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6870748299319728 [2024-02-19 15:01:08,596 INFO L308 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2024-02-19 15:01:08,596 INFO L507 AbstractCegarLoop]: Abstraction has has 52 places, 62 transitions, 261 flow [2024-02-19 15:01:08,596 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 15:01:08,596 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:08,596 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:08,597 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 15:01:08,597 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 2 more)] === [2024-02-19 15:01:08,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:08,597 INFO L85 PathProgramCache]: Analyzing trace with hash -399208320, now seen corresponding path program 1 times [2024-02-19 15:01:08,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:08,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107373110] [2024-02-19 15:01:08,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:08,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:08,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:01:08,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:08,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107373110] [2024-02-19 15:01:08,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107373110] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:01:08,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:01:08,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 15:01:08,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859027518] [2024-02-19 15:01:08,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:01:08,726 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 15:01:08,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 15:01:08,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 15:01:08,730 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-02-19 15:01:08,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 62 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:01:08,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:08,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-02-19 15:01:08,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:09,033 INFO L124 PetriNetUnfolderBase]: 1414/2390 cut-off events. [2024-02-19 15:01:09,034 INFO L125 PetriNetUnfolderBase]: For 698/758 co-relation queries the response was YES. [2024-02-19 15:01:09,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6484 conditions, 2390 events. 1414/2390 cut-off events. For 698/758 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14025 event pairs, 187 based on Foata normal form. 86/2452 useless extension candidates. Maximal degree in co-relation 4769. Up to 1326 conditions per place. [2024-02-19 15:01:09,050 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 81 selfloop transitions, 3 changer transitions 2/99 dead transitions. [2024-02-19 15:01:09,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 99 transitions, 614 flow [2024-02-19 15:01:09,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 15:01:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 15:01:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-02-19 15:01:09,054 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-02-19 15:01:09,055 INFO L308 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2024-02-19 15:01:09,055 INFO L507 AbstractCegarLoop]: Abstraction has has 54 places, 99 transitions, 614 flow [2024-02-19 15:01:09,057 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:01:09,057 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:09,058 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:09,058 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 15:01:09,058 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 2 more)] === [2024-02-19 15:01:09,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:09,059 INFO L85 PathProgramCache]: Analyzing trace with hash -417900807, now seen corresponding path program 1 times [2024-02-19 15:01:09,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:09,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602339602] [2024-02-19 15:01:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:09,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:01:09,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:09,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602339602] [2024-02-19 15:01:09,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602339602] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:01:09,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:01:09,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 15:01:09,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213217610] [2024-02-19 15:01:09,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:01:09,198 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 15:01:09,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:09,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 15:01:09,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 15:01:09,202 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-02-19 15:01:09,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 99 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:01:09,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:09,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-02-19 15:01:09,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:09,536 INFO L124 PetriNetUnfolderBase]: 1670/2827 cut-off events. [2024-02-19 15:01:09,537 INFO L125 PetriNetUnfolderBase]: For 1919/1979 co-relation queries the response was YES. [2024-02-19 15:01:09,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9985 conditions, 2827 events. 1670/2827 cut-off events. For 1919/1979 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16428 event pairs, 117 based on Foata normal form. 82/2899 useless extension candidates. Maximal degree in co-relation 7252. Up to 1587 conditions per place. [2024-02-19 15:01:09,553 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 127 selfloop transitions, 4 changer transitions 10/154 dead transitions. [2024-02-19 15:01:09,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 154 transitions, 1277 flow [2024-02-19 15:01:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 15:01:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 15:01:09,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-02-19 15:01:09,557 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7006802721088435 [2024-02-19 15:01:09,558 INFO L308 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2024-02-19 15:01:09,558 INFO L507 AbstractCegarLoop]: Abstraction has has 56 places, 154 transitions, 1277 flow [2024-02-19 15:01:09,558 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:01:09,558 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:09,558 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:09,558 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 15:01:09,559 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 2 more)] === [2024-02-19 15:01:09,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:09,559 INFO L85 PathProgramCache]: Analyzing trace with hash -491921236, now seen corresponding path program 1 times [2024-02-19 15:01:09,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:09,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73885389] [2024-02-19 15:01:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:09,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:01:09,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:09,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73885389] [2024-02-19 15:01:09,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73885389] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:01:09,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:01:09,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 15:01:09,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55625805] [2024-02-19 15:01:09,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:01:09,734 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 15:01:09,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:09,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 15:01:09,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 15:01:09,736 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-02-19 15:01:09,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 154 transitions, 1277 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 15:01:09,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:09,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-02-19 15:01:09,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:10,168 INFO L124 PetriNetUnfolderBase]: 2143/3705 cut-off events. [2024-02-19 15:01:10,169 INFO L125 PetriNetUnfolderBase]: For 4439/4493 co-relation queries the response was YES. [2024-02-19 15:01:10,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16121 conditions, 3705 events. 2143/3705 cut-off events. For 4439/4493 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 23264 event pairs, 234 based on Foata normal form. 72/3763 useless extension candidates. Maximal degree in co-relation 8932. Up to 2299 conditions per place. [2024-02-19 15:01:10,224 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 178 selfloop transitions, 7 changer transitions 19/217 dead transitions. [2024-02-19 15:01:10,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 217 transitions, 2243 flow [2024-02-19 15:01:10,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 15:01:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 15:01:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-02-19 15:01:10,226 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6081632653061224 [2024-02-19 15:01:10,228 INFO L308 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2024-02-19 15:01:10,228 INFO L507 AbstractCegarLoop]: Abstraction has has 60 places, 217 transitions, 2243 flow [2024-02-19 15:01:10,228 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 15:01:10,228 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:10,228 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:10,228 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-19 15:01:10,229 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 2 more)] === [2024-02-19 15:01:10,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:10,229 INFO L85 PathProgramCache]: Analyzing trace with hash 103395204, now seen corresponding path program 1 times [2024-02-19 15:01:10,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:10,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794606822] [2024-02-19 15:01:10,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:10,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:01:10,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794606822] [2024-02-19 15:01:10,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794606822] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:01:10,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:01:10,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 15:01:10,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101432226] [2024-02-19 15:01:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:01:10,347 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 15:01:10,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:10,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 15:01:10,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 15:01:10,348 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-02-19 15:01:10,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 217 transitions, 2243 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 15:01:10,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:10,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-02-19 15:01:10,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:10,858 INFO L124 PetriNetUnfolderBase]: 2757/4863 cut-off events. [2024-02-19 15:01:10,858 INFO L125 PetriNetUnfolderBase]: For 9003/9171 co-relation queries the response was YES. [2024-02-19 15:01:10,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25282 conditions, 4863 events. 2757/4863 cut-off events. For 9003/9171 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 32872 event pairs, 468 based on Foata normal form. 134/4972 useless extension candidates. Maximal degree in co-relation 10612. Up to 3054 conditions per place. [2024-02-19 15:01:10,892 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 227 selfloop transitions, 5 changer transitions 56/301 dead transitions. [2024-02-19 15:01:10,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 301 transitions, 3743 flow [2024-02-19 15:01:10,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 15:01:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 15:01:10,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-02-19 15:01:10,893 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-02-19 15:01:10,894 INFO L308 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2024-02-19 15:01:10,894 INFO L507 AbstractCegarLoop]: Abstraction has has 63 places, 301 transitions, 3743 flow [2024-02-19 15:01:10,894 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 15:01:10,895 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:10,895 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:10,895 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-19 15:01:10,895 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 2 more)] === [2024-02-19 15:01:10,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:10,896 INFO L85 PathProgramCache]: Analyzing trace with hash -474028451, now seen corresponding path program 1 times [2024-02-19 15:01:10,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:10,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585877204] [2024-02-19 15:01:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:10,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:01:11,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:11,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585877204] [2024-02-19 15:01:11,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585877204] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:01:11,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:01:11,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 15:01:11,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972048678] [2024-02-19 15:01:11,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:01:11,184 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 15:01:11,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:11,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 15:01:11,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-19 15:01:11,233 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-02-19 15:01:11,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 301 transitions, 3743 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 15:01:11,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:11,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-02-19 15:01:11,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:12,542 INFO L124 PetriNetUnfolderBase]: 7435/11775 cut-off events. [2024-02-19 15:01:12,543 INFO L125 PetriNetUnfolderBase]: For 49894/50236 co-relation queries the response was YES. [2024-02-19 15:01:12,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70063 conditions, 11775 events. 7435/11775 cut-off events. For 49894/50236 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 82379 event pairs, 1800 based on Foata normal form. 272/11966 useless extension candidates. Maximal degree in co-relation 19772. Up to 7090 conditions per place. [2024-02-19 15:01:12,700 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 392 selfloop transitions, 23 changer transitions 121/546 dead transitions. [2024-02-19 15:01:12,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 546 transitions, 7947 flow [2024-02-19 15:01:12,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 15:01:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 15:01:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-02-19 15:01:12,701 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-02-19 15:01:12,702 INFO L308 CegarLoopForPetriNet]: 50 programPoint places, 18 predicate places. [2024-02-19 15:01:12,702 INFO L507 AbstractCegarLoop]: Abstraction has has 68 places, 546 transitions, 7947 flow [2024-02-19 15:01:12,702 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 15:01:12,702 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:12,703 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:12,703 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-19 15:01:12,703 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 2 more)] === [2024-02-19 15:01:12,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:12,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1627150883, now seen corresponding path program 2 times [2024-02-19 15:01:12,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:12,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566591726] [2024-02-19 15:01:12,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:12,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:01:12,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:12,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566591726] [2024-02-19 15:01:12,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566591726] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:01:12,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:01:12,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 15:01:12,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380639163] [2024-02-19 15:01:12,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:01:12,918 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 15:01:12,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:12,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 15:01:12,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-19 15:01:12,948 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-02-19 15:01:12,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 546 transitions, 7947 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 15:01:12,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:12,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-02-19 15:01:12,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:15,088 INFO L124 PetriNetUnfolderBase]: 11865/18583 cut-off events. [2024-02-19 15:01:15,088 INFO L125 PetriNetUnfolderBase]: For 110993/112116 co-relation queries the response was YES. [2024-02-19 15:01:15,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117368 conditions, 18583 events. 11865/18583 cut-off events. For 110993/112116 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 135444 event pairs, 3082 based on Foata normal form. 338/18879 useless extension candidates. Maximal degree in co-relation 40100. Up to 10236 conditions per place. [2024-02-19 15:01:15,231 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 448 selfloop transitions, 14 changer transitions 185/660 dead transitions. [2024-02-19 15:01:15,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 660 transitions, 10879 flow [2024-02-19 15:01:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 15:01:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 15:01:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-02-19 15:01:15,232 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.608843537414966 [2024-02-19 15:01:15,233 INFO L308 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2024-02-19 15:01:15,233 INFO L507 AbstractCegarLoop]: Abstraction has has 73 places, 660 transitions, 10879 flow [2024-02-19 15:01:15,233 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 15:01:15,233 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:15,233 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:15,233 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-19 15:01:15,234 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 2 more)] === [2024-02-19 15:01:15,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:15,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2033704311, now seen corresponding path program 1 times [2024-02-19 15:01:15,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:15,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603598110] [2024-02-19 15:01:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:15,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:01:15,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:15,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603598110] [2024-02-19 15:01:15,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603598110] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:01:15,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:01:15,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 15:01:15,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832623742] [2024-02-19 15:01:15,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:01:15,471 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 15:01:15,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:15,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 15:01:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-19 15:01:15,500 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-02-19 15:01:15,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 660 transitions, 10879 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 15:01:15,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:15,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-02-19 15:01:15,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:18,937 INFO L124 PetriNetUnfolderBase]: 18854/28256 cut-off events. [2024-02-19 15:01:18,937 INFO L125 PetriNetUnfolderBase]: For 243277/246572 co-relation queries the response was YES. [2024-02-19 15:01:19,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189489 conditions, 28256 events. 18854/28256 cut-off events. For 243277/246572 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 193923 event pairs, 6604 based on Foata normal form. 382/28452 useless extension candidates. Maximal degree in co-relation 76512. Up to 13665 conditions per place. [2024-02-19 15:01:19,143 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 226 selfloop transitions, 11 changer transitions 350/600 dead transitions. [2024-02-19 15:01:19,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 600 transitions, 11049 flow [2024-02-19 15:01:19,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 15:01:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 15:01:19,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-02-19 15:01:19,145 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5850340136054422 [2024-02-19 15:01:19,147 INFO L308 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2024-02-19 15:01:19,147 INFO L507 AbstractCegarLoop]: Abstraction has has 78 places, 600 transitions, 11049 flow [2024-02-19 15:01:19,147 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 15:01:19,147 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:19,148 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:19,148 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-19 15:01:19,148 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 2 more)] === [2024-02-19 15:01:19,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:19,148 INFO L85 PathProgramCache]: Analyzing trace with hash -586409051, now seen corresponding path program 1 times [2024-02-19 15:01:19,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:19,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965618359] [2024-02-19 15:01:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:19,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:01:19,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:19,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965618359] [2024-02-19 15:01:19,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965618359] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:01:19,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237743053] [2024-02-19 15:01:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:19,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:01:19,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:01:19,350 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 15:01:19,373 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 15:01:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:19,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 15:01:19,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:01:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:01:19,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:01:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:01:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237743053] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 15:01:19,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 15:01:19,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 7] total 17 [2024-02-19 15:01:19,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186385477] [2024-02-19 15:01:19,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:01:19,795 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 15:01:19,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:19,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 15:01:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-02-19 15:01:19,867 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-02-19 15:01:19,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 600 transitions, 11049 flow. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 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 15:01:19,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:19,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-02-19 15:01:19,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:24,269 INFO L124 PetriNetUnfolderBase]: 23921/34967 cut-off events. [2024-02-19 15:01:24,269 INFO L125 PetriNetUnfolderBase]: For 435201/440302 co-relation queries the response was YES. [2024-02-19 15:01:24,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267718 conditions, 34967 events. 23921/34967 cut-off events. For 435201/440302 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 240911 event pairs, 2268 based on Foata normal form. 1605/36392 useless extension candidates. Maximal degree in co-relation 134361. Up to 17573 conditions per place. [2024-02-19 15:01:24,516 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 577 selfloop transitions, 38 changer transitions 433/1057 dead transitions. [2024-02-19 15:01:24,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 1057 transitions, 21446 flow [2024-02-19 15:01:24,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-19 15:01:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-19 15:01:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 300 transitions. [2024-02-19 15:01:24,518 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5565862708719852 [2024-02-19 15:01:24,518 INFO L308 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2024-02-19 15:01:24,518 INFO L507 AbstractCegarLoop]: Abstraction has has 88 places, 1057 transitions, 21446 flow [2024-02-19 15:01:24,519 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 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 15:01:24,519 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:24,519 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:24,533 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 15:01:24,729 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:01:24,730 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 2 more)] === [2024-02-19 15:01:24,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:24,730 INFO L85 PathProgramCache]: Analyzing trace with hash 944009637, now seen corresponding path program 2 times [2024-02-19 15:01:24,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:24,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125468243] [2024-02-19 15:01:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:24,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:24,900 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 15:01:24,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:24,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125468243] [2024-02-19 15:01:24,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125468243] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:01:24,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661354767] [2024-02-19 15:01:24,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:01:24,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:01:24,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:01:24,902 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 15:01:24,924 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 15:01:25,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:01:25,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:01:25,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:01:25,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:01:25,072 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 15:01:25,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:01:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:01:25,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661354767] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 15:01:25,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 15:01:25,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 12 [2024-02-19 15:01:25,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777270320] [2024-02-19 15:01:25,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:01:25,121 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 15:01:25,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:25,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 15:01:25,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-02-19 15:01:25,152 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-02-19 15:01:25,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 1057 transitions, 21446 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 15:01:25,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:25,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-02-19 15:01:25,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:29,850 INFO L124 PetriNetUnfolderBase]: 21251/31101 cut-off events. [2024-02-19 15:01:29,850 INFO L125 PetriNetUnfolderBase]: For 460568/467253 co-relation queries the response was YES. [2024-02-19 15:01:29,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260320 conditions, 31101 events. 21251/31101 cut-off events. For 460568/467253 co-relation queries the response was YES. Maximal size of possible extension queue 1268. Compared 211591 event pairs, 1537 based on Foata normal form. 2768/33658 useless extension candidates. Maximal degree in co-relation 137164. Up to 16007 conditions per place. [2024-02-19 15:01:30,103 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 539 selfloop transitions, 19 changer transitions 558/1141 dead transitions. [2024-02-19 15:01:30,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 1141 transitions, 25396 flow [2024-02-19 15:01:30,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 15:01:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 15:01:30,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-02-19 15:01:30,104 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.565597667638484 [2024-02-19 15:01:30,105 INFO L308 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2024-02-19 15:01:30,105 INFO L507 AbstractCegarLoop]: Abstraction has has 94 places, 1141 transitions, 25396 flow [2024-02-19 15:01:30,105 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 15:01:30,105 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:30,105 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:30,119 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 15:01:30,306 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,SelfDestructingSolverStorable9 [2024-02-19 15:01:30,307 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 2 more)] === [2024-02-19 15:01:30,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1208478531, now seen corresponding path program 1 times [2024-02-19 15:01:30,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:30,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414979618] [2024-02-19 15:01:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:30,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:30,478 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 15:01:30,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:30,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414979618] [2024-02-19 15:01:30,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414979618] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:01:30,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716872234] [2024-02-19 15:01:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:30,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:01:30,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:01:30,484 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 15:01:30,504 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 15:01:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:30,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 15:01:30,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:01:30,674 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 15:01:30,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:01:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:01:30,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716872234] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 15:01:30,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 15:01:30,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5] total 14 [2024-02-19 15:01:30,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179649630] [2024-02-19 15:01:30,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:01:30,755 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 15:01:30,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:30,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 15:01:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-02-19 15:01:30,803 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-02-19 15:01:30,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 1141 transitions, 25396 flow. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 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 15:01:30,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:30,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-02-19 15:01:30,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:38,630 INFO L124 PetriNetUnfolderBase]: 37028/51681 cut-off events. [2024-02-19 15:01:38,630 INFO L125 PetriNetUnfolderBase]: For 943431/971034 co-relation queries the response was YES. [2024-02-19 15:01:38,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447400 conditions, 51681 events. 37028/51681 cut-off events. For 943431/971034 co-relation queries the response was YES. Maximal size of possible extension queue 1431. Compared 328764 event pairs, 1476 based on Foata normal form. 4890/55502 useless extension candidates. Maximal degree in co-relation 248980. Up to 24600 conditions per place. [2024-02-19 15:01:39,028 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 585 selfloop transitions, 80 changer transitions 1220/1913 dead transitions. [2024-02-19 15:01:39,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 1913 transitions, 46094 flow [2024-02-19 15:01:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-02-19 15:01:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-02-19 15:01:39,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 391 transitions. [2024-02-19 15:01:39,030 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5319727891156463 [2024-02-19 15:01:39,030 INFO L308 CegarLoopForPetriNet]: 50 programPoint places, 58 predicate places. [2024-02-19 15:01:39,030 INFO L507 AbstractCegarLoop]: Abstraction has has 108 places, 1913 transitions, 46094 flow [2024-02-19 15:01:39,030 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 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 15:01:39,030 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:39,031 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:39,041 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 15:01:39,231 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:01:39,232 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 2 more)] === [2024-02-19 15:01:39,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash -965347825, now seen corresponding path program 1 times [2024-02-19 15:01:39,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:39,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143620071] [2024-02-19 15:01:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:39,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:01:39,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:39,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143620071] [2024-02-19 15:01:39,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143620071] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:01:39,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:01:39,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 15:01:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989399862] [2024-02-19 15:01:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:01:39,424 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 15:01:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:39,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 15:01:39,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-19 15:01:39,450 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-02-19 15:01:39,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 1913 transitions, 46094 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 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 15:01:39,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:39,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-02-19 15:01:39,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:50,755 INFO L124 PetriNetUnfolderBase]: 41232/57230 cut-off events. [2024-02-19 15:01:50,755 INFO L125 PetriNetUnfolderBase]: For 1321902/1355777 co-relation queries the response was YES. [2024-02-19 15:01:50,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530258 conditions, 57230 events. 41232/57230 cut-off events. For 1321902/1355777 co-relation queries the response was YES. Maximal size of possible extension queue 1752. Compared 363669 event pairs, 2492 based on Foata normal form. 3663/59493 useless extension candidates. Maximal degree in co-relation 326054. Up to 28968 conditions per place. [2024-02-19 15:01:51,297 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 852 selfloop transitions, 31 changer transitions 1536/2473 dead transitions. [2024-02-19 15:01:51,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 2473 transitions, 64654 flow [2024-02-19 15:01:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 15:01:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 15:01:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-02-19 15:01:51,299 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.577259475218659 [2024-02-19 15:01:51,299 INFO L308 CegarLoopForPetriNet]: 50 programPoint places, 64 predicate places. [2024-02-19 15:01:51,299 INFO L507 AbstractCegarLoop]: Abstraction has has 114 places, 2473 transitions, 64654 flow [2024-02-19 15:01:51,299 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 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 15:01:51,300 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:51,300 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:51,300 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-19 15:01:51,300 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 2 more)] === [2024-02-19 15:01:51,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:51,300 INFO L85 PathProgramCache]: Analyzing trace with hash -780322397, now seen corresponding path program 2 times [2024-02-19 15:01:51,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:51,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336022379] [2024-02-19 15:01:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:51,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:01:51,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:51,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336022379] [2024-02-19 15:01:51,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336022379] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:01:51,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713124413] [2024-02-19 15:01:51,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:01:51,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:01:51,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:01:51,464 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 15:01:51,465 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 15:01:51,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-19 15:01:51,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:01:51,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-19 15:01:51,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:01:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:01:51,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 15:01:51,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713124413] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:01:51,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 15:01:51,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-02-19 15:01:51,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820450352] [2024-02-19 15:01:51,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:01:51,661 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 15:01:51,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:51,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 15:01:51,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-19 15:01:51,669 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-02-19 15:01:51,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 2473 transitions, 64654 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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 15:01:51,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:51,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-02-19 15:01:51,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand