./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.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-prod-cons3.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 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --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 15:16:03,838 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 15:16:03,899 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 15:16:03,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 15:16:03,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 15:16:03,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 15:16:03,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 15:16:03,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 15:16:03,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 15:16:03,937 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 15:16:03,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 15:16:03,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 15:16:03,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 15:16:03,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 15:16:03,939 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 15:16:03,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 15:16:03,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 15:16:03,940 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 15:16:03,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 15:16:03,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 15:16:03,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 15:16:03,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 15:16:03,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 15:16:03,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 15:16:03,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 15:16:03,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 15:16:03,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 15:16:03,942 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 15:16:03,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 15:16:03,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 15:16:03,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 15:16:03,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 15:16:03,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 15:16:03,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 15:16:03,945 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 15:16:03,945 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 15:16:03,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 15:16:03,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 15:16:03,946 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 15:16:03,946 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 15:16:03,946 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 15:16:03,946 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 15:16:03,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 15:16:03,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 15:16:04,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 15:16:04,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 15:16:04,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 15:16:04,211 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 15:16:04,212 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 15:16:04,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2024-02-19 15:16:05,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 15:16:05,351 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 15:16:05,351 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2024-02-19 15:16:05,360 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e7e00eb0/5efc74bd61924dbab66f9018b2e91d96/FLAG9291c5f59 [2024-02-19 15:16:05,371 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e7e00eb0/5efc74bd61924dbab66f9018b2e91d96 [2024-02-19 15:16:05,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 15:16:05,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 15:16:05,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 15:16:05,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 15:16:05,378 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 15:16:05,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ad28f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05, skipping insertion in model container [2024-02-19 15:16:05,379 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,400 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 15:16:05,576 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-prod-cons3.wvr.c[4007,4020] [2024-02-19 15:16:05,589 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 15:16:05,597 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 15:16:05,630 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-prod-cons3.wvr.c[4007,4020] [2024-02-19 15:16:05,636 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 15:16:05,651 INFO L206 MainTranslator]: Completed translation [2024-02-19 15:16:05,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05 WrapperNode [2024-02-19 15:16:05,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 15:16:05,654 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 15:16:05,654 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 15:16:05,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 15:16:05,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,710 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 276 [2024-02-19 15:16:05,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 15:16:05,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 15:16:05,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 15:16:05,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 15:16:05,720 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,731 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,758 INFO L175 MemorySlicer]: Split 16 memory accesses to 6 slices as follows [2, 2, 6, 2, 2, 2]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 2, 1, 1, 1]. [2024-02-19 15:16:05,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,763 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,767 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,776 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 15:16:05,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 15:16:05,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 15:16:05,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 15:16:05,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05" (1/1) ... [2024-02-19 15:16:05,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 15:16:05,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:16:05,809 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 15:16:05,828 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 15:16:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 15:16:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 15:16:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 15:16:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 15:16:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 15:16:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 15:16:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 15:16:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-19 15:16:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 15:16:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 15:16:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 15:16:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 15:16:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 15:16:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-19 15:16:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 15:16:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 15:16:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 15:16:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 15:16:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 15:16:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 15:16:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-19 15:16:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-19 15:16:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 15:16:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 15:16:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 15:16:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 15:16:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 15:16:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-19 15:16:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 15:16:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 15:16:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 15:16:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 15:16:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 15:16:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 15:16:05,860 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 15:16:05,974 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 15:16:05,976 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 15:16:06,305 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 15:16:06,305 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 15:16:06,555 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 15:16:06,555 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-02-19 15:16:06,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:16:06 BoogieIcfgContainer [2024-02-19 15:16:06,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 15:16:06,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 15:16:06,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 15:16:06,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 15:16:06,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 03:16:05" (1/3) ... [2024-02-19 15:16:06,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca2da4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:16:06, skipping insertion in model container [2024-02-19 15:16:06,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:16:05" (2/3) ... [2024-02-19 15:16:06,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca2da4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:16:06, skipping insertion in model container [2024-02-19 15:16:06,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:16:06" (3/3) ... [2024-02-19 15:16:06,563 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2024-02-19 15:16:06,577 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 15:16:06,578 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 15:16:06,578 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 15:16:06,617 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-19 15:16:06,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 53 transitions, 134 flow [2024-02-19 15:16:06,670 INFO L124 PetriNetUnfolderBase]: 6/49 cut-off events. [2024-02-19 15:16:06,670 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-19 15:16:06,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 49 events. 6/49 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-02-19 15:16:06,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 53 transitions, 134 flow [2024-02-19 15:16:06,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 48 transitions, 120 flow [2024-02-19 15:16:06,687 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 15:16:06,693 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;@32600b1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 15:16:06,694 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-19 15:16:06,710 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 15:16:06,710 INFO L124 PetriNetUnfolderBase]: 6/47 cut-off events. [2024-02-19 15:16:06,711 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-19 15:16:06,711 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:16:06,711 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] [2024-02-19 15:16:06,712 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 15:16:06,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:16:06,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1413987009, now seen corresponding path program 1 times [2024-02-19 15:16:06,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:16:06,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601939339] [2024-02-19 15:16:06,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:16:06,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:16:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:16:07,369 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 15:16:07,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:16:07,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601939339] [2024-02-19 15:16:07,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601939339] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:16:07,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:16:07,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 15:16:07,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833436467] [2024-02-19 15:16:07,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:16:07,379 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 15:16:07,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:16:07,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 15:16:07,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-02-19 15:16:07,447 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-02-19 15:16:07,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 120 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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 15:16:07,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:16:07,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-02-19 15:16:07,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:16:08,308 INFO L124 PetriNetUnfolderBase]: 6321/8842 cut-off events. [2024-02-19 15:16:08,308 INFO L125 PetriNetUnfolderBase]: For 590/590 co-relation queries the response was YES. [2024-02-19 15:16:08,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17502 conditions, 8842 events. 6321/8842 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 49531 event pairs, 376 based on Foata normal form. 480/9210 useless extension candidates. Maximal degree in co-relation 14922. Up to 2566 conditions per place. [2024-02-19 15:16:08,354 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 95 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2024-02-19 15:16:08,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 114 transitions, 484 flow [2024-02-19 15:16:08,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 15:16:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 15:16:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-02-19 15:16:08,365 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.601078167115903 [2024-02-19 15:16:08,367 INFO L308 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2024-02-19 15:16:08,367 INFO L507 AbstractCegarLoop]: Abstraction has has 61 places, 114 transitions, 484 flow [2024-02-19 15:16:08,368 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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 15:16:08,368 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:16:08,368 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 15:16:08,368 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 15:16:08,369 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 15:16:08,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:16:08,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1038866620, now seen corresponding path program 1 times [2024-02-19 15:16:08,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:16:08,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162263193] [2024-02-19 15:16:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:16:08,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:16:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:16:08,474 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 15:16:08,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:16:08,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162263193] [2024-02-19 15:16:08,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162263193] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:16:08,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:16:08,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 15:16:08,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028218156] [2024-02-19 15:16:08,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:16:08,477 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 15:16:08,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:16:08,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 15:16:08,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 15:16:08,479 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-02-19 15:16:08,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 114 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 15:16:08,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:16:08,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-02-19 15:16:08,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:16:09,098 INFO L124 PetriNetUnfolderBase]: 5272/7769 cut-off events. [2024-02-19 15:16:09,098 INFO L125 PetriNetUnfolderBase]: For 3998/4171 co-relation queries the response was YES. [2024-02-19 15:16:09,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20949 conditions, 7769 events. 5272/7769 cut-off events. For 3998/4171 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 47182 event pairs, 309 based on Foata normal form. 147/7853 useless extension candidates. Maximal degree in co-relation 17896. Up to 4833 conditions per place. [2024-02-19 15:16:09,142 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 115 selfloop transitions, 3 changer transitions 4/146 dead transitions. [2024-02-19 15:16:09,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 146 transitions, 877 flow [2024-02-19 15:16:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 15:16:09,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 15:16:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-02-19 15:16:09,147 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7044025157232704 [2024-02-19 15:16:09,148 INFO L308 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-02-19 15:16:09,148 INFO L507 AbstractCegarLoop]: Abstraction has has 63 places, 146 transitions, 877 flow [2024-02-19 15:16:09,150 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 15:16:09,150 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:16:09,150 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] [2024-02-19 15:16:09,151 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 15:16:09,151 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 15:16:09,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:16:09,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1026231749, now seen corresponding path program 1 times [2024-02-19 15:16:09,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:16:09,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887309853] [2024-02-19 15:16:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:16:09,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:16:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:16:09,226 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 15:16:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:16:09,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887309853] [2024-02-19 15:16:09,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887309853] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:16:09,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:16:09,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 15:16:09,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102635283] [2024-02-19 15:16:09,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:16:09,229 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 15:16:09,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:16:09,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 15:16:09,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 15:16:09,230 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-02-19 15:16:09,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 146 transitions, 877 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:16:09,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:16:09,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-02-19 15:16:09,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:16:09,705 INFO L124 PetriNetUnfolderBase]: 4414/6736 cut-off events. [2024-02-19 15:16:09,706 INFO L125 PetriNetUnfolderBase]: For 9002/9206 co-relation queries the response was YES. [2024-02-19 15:16:09,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22835 conditions, 6736 events. 4414/6736 cut-off events. For 9002/9206 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 39756 event pairs, 199 based on Foata normal form. 57/6757 useless extension candidates. Maximal degree in co-relation 20888. Up to 4507 conditions per place. [2024-02-19 15:16:09,749 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 128 selfloop transitions, 3 changer transitions 19/174 dead transitions. [2024-02-19 15:16:09,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 174 transitions, 1369 flow [2024-02-19 15:16:09,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 15:16:09,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 15:16:09,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-02-19 15:16:09,751 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2024-02-19 15:16:09,752 INFO L308 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-02-19 15:16:09,752 INFO L507 AbstractCegarLoop]: Abstraction has has 65 places, 174 transitions, 1369 flow [2024-02-19 15:16:09,752 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:16:09,752 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:16:09,752 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, 1, 1, 1, 1] [2024-02-19 15:16:09,752 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 15:16:09,753 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 15:16:09,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:16:09,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1913737660, now seen corresponding path program 1 times [2024-02-19 15:16:09,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:16:09,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977824126] [2024-02-19 15:16:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:16:09,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:16:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:16:09,850 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 15:16:09,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:16:09,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977824126] [2024-02-19 15:16:09,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977824126] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:16:09,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:16:09,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 15:16:09,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873677336] [2024-02-19 15:16:09,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:16:09,852 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 15:16:09,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:16:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 15:16:09,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 15:16:09,853 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-02-19 15:16:09,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 174 transitions, 1369 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 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 15:16:09,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:16:09,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-02-19 15:16:09,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:16:10,495 INFO L124 PetriNetUnfolderBase]: 4664/7228 cut-off events. [2024-02-19 15:16:10,495 INFO L125 PetriNetUnfolderBase]: For 18143/18293 co-relation queries the response was YES. [2024-02-19 15:16:10,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29492 conditions, 7228 events. 4664/7228 cut-off events. For 18143/18293 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 43730 event pairs, 298 based on Foata normal form. 34/7223 useless extension candidates. Maximal degree in co-relation 25332. Up to 4805 conditions per place. [2024-02-19 15:16:10,529 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 129 selfloop transitions, 2 changer transitions 52/207 dead transitions. [2024-02-19 15:16:10,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 207 transitions, 2026 flow [2024-02-19 15:16:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 15:16:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 15:16:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-02-19 15:16:10,531 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-02-19 15:16:10,533 INFO L308 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2024-02-19 15:16:10,533 INFO L507 AbstractCegarLoop]: Abstraction has has 69 places, 207 transitions, 2026 flow [2024-02-19 15:16:10,533 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 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 15:16:10,533 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:16:10,533 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, 1, 1, 1, 1, 1] [2024-02-19 15:16:10,534 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-19 15:16:10,534 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 15:16:10,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:16:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1202815506, now seen corresponding path program 1 times [2024-02-19 15:16:10,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:16:10,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892095539] [2024-02-19 15:16:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:16:10,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:16:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:16:10,661 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 15:16:10,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:16:10,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892095539] [2024-02-19 15:16:10,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892095539] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:16:10,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:16:10,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 15:16:10,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210968332] [2024-02-19 15:16:10,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:16:10,663 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 15:16:10,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:16:10,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 15:16:10,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 15:16:10,665 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-02-19 15:16:10,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 207 transitions, 2026 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 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 15:16:10,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:16:10,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-02-19 15:16:10,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:16:11,427 INFO L124 PetriNetUnfolderBase]: 5783/9272 cut-off events. [2024-02-19 15:16:11,428 INFO L125 PetriNetUnfolderBase]: For 36637/36869 co-relation queries the response was YES. [2024-02-19 15:16:11,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43666 conditions, 9272 events. 5783/9272 cut-off events. For 36637/36869 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 60893 event pairs, 564 based on Foata normal form. 84/9277 useless extension candidates. Maximal degree in co-relation 29776. Up to 5794 conditions per place. [2024-02-19 15:16:11,488 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 125 selfloop transitions, 2 changer transitions 146/297 dead transitions. [2024-02-19 15:16:11,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 297 transitions, 3550 flow [2024-02-19 15:16:11,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 15:16:11,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 15:16:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-02-19 15:16:11,490 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6462264150943396 [2024-02-19 15:16:11,492 INFO L308 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2024-02-19 15:16:11,492 INFO L507 AbstractCegarLoop]: Abstraction has has 72 places, 297 transitions, 3550 flow [2024-02-19 15:16:11,492 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 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 15:16:11,492 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:16:11,493 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, 1, 1, 1, 1, 1, 1] [2024-02-19 15:16:11,493 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-19 15:16:11,493 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 15:16:11,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:16:11,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1219106604, now seen corresponding path program 1 times [2024-02-19 15:16:11,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:16:11,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086512696] [2024-02-19 15:16:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:16:11,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:16:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:16:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-02-19 15:16:11,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:16:11,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086512696] [2024-02-19 15:16:11,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086512696] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:16:11,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78227682] [2024-02-19 15:16:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:16:11,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:16:11,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:16:11,608 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 15:16:11,628 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 15:16:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:16:11,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:16:11,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:16:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-02-19 15:16:11,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:16:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-02-19 15:16:11,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78227682] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:16:11,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:16:11,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 5] total 8 [2024-02-19 15:16:11,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011164420] [2024-02-19 15:16:11,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:16:11,877 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 15:16:11,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:16:11,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 15:16:11,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-02-19 15:16:11,894 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-02-19 15:16:11,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 297 transitions, 3550 flow. Second operand has 8 states, 8 states have (on average 24.75) internal successors, (198), 8 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:16:11,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:16:11,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-02-19 15:16:11,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:16:13,616 INFO L124 PetriNetUnfolderBase]: 14347/21170 cut-off events. [2024-02-19 15:16:13,616 INFO L125 PetriNetUnfolderBase]: For 151508/152100 co-relation queries the response was YES. [2024-02-19 15:16:13,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117190 conditions, 21170 events. 14347/21170 cut-off events. For 151508/152100 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 128865 event pairs, 430 based on Foata normal form. 1510/22329 useless extension candidates. Maximal degree in co-relation 86395. Up to 13618 conditions per place. [2024-02-19 15:16:13,753 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 317 selfloop transitions, 10 changer transitions 533/878 dead transitions. [2024-02-19 15:16:13,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 878 transitions, 12439 flow [2024-02-19 15:16:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 15:16:13,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 15:16:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-02-19 15:16:13,754 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5795148247978437 [2024-02-19 15:16:13,755 INFO L308 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2024-02-19 15:16:13,755 INFO L507 AbstractCegarLoop]: Abstraction has has 78 places, 878 transitions, 12439 flow [2024-02-19 15:16:13,755 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.75) internal successors, (198), 8 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:16:13,755 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:16:13,755 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, 1, 1, 1, 1, 1, 1] [2024-02-19 15:16:13,769 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 15:16:13,969 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-02-19 15:16:13,970 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 15:16:13,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:16:13,970 INFO L85 PathProgramCache]: Analyzing trace with hash 931942520, now seen corresponding path program 2 times [2024-02-19 15:16:13,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:16:13,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754028738] [2024-02-19 15:16:13,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:16:13,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:16:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:16:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:16:15,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:16:15,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754028738] [2024-02-19 15:16:15,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754028738] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:16:15,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728813849] [2024-02-19 15:16:15,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:16:15,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:16:15,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:16:15,337 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 15:16:15,356 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 15:16:15,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:16:15,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:16:15,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 41 conjunts are in the unsatisfiable core [2024-02-19 15:16:15,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:16:15,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-02-19 15:16:16,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:16:16,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2024-02-19 15:16:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:16:16,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:16:17,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:16:17,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 150 [2024-02-19 15:16:17,361 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:16:17,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 31 [2024-02-19 15:16:17,418 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:16:17,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 48 [2024-02-19 15:16:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:16:17,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728813849] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:16:17,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:16:17,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2024-02-19 15:16:17,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027304736] [2024-02-19 15:16:17,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:16:17,636 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-02-19 15:16:17,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:16:17,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-02-19 15:16:17,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1595, Unknown=0, NotChecked=0, Total=1806 [2024-02-19 15:16:18,311 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-02-19 15:16:18,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 878 transitions, 12439 flow. Second operand has 43 states, 43 states have (on average 12.837209302325581) internal successors, (552), 43 states have internal predecessors, (552), 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 15:16:18,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:16:18,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-02-19 15:16:18,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:16:35,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:16:42,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:16:47,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:16:56,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 15:17:22,549 INFO L124 PetriNetUnfolderBase]: 173324/244284 cut-off events. [2024-02-19 15:17:22,549 INFO L125 PetriNetUnfolderBase]: For 1812932/1832599 co-relation queries the response was YES. [2024-02-19 15:17:23,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418692 conditions, 244284 events. 173324/244284 cut-off events. For 1812932/1832599 co-relation queries the response was YES. Maximal size of possible extension queue 5150. Compared 1774531 event pairs, 6378 based on Foata normal form. 13342/249426 useless extension candidates. Maximal degree in co-relation 727504. Up to 141399 conditions per place. [2024-02-19 15:17:24,102 INFO L140 encePairwiseOnDemand]: 33/53 looper letters, 1506 selfloop transitions, 516 changer transitions 5325/7358 dead transitions. [2024-02-19 15:17:24,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 7358 transitions, 111620 flow [2024-02-19 15:17:24,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2024-02-19 15:17:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2024-02-19 15:17:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 4069 transitions. [2024-02-19 15:17:24,112 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47100358837828454 [2024-02-19 15:17:24,112 INFO L308 CegarLoopForPetriNet]: 55 programPoint places, 185 predicate places. [2024-02-19 15:17:24,112 INFO L507 AbstractCegarLoop]: Abstraction has has 240 places, 7358 transitions, 111620 flow [2024-02-19 15:17:24,113 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 12.837209302325581) internal successors, (552), 43 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:17:24,113 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:17:24,113 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:17:24,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-02-19 15:17:24,324 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,SelfDestructingSolverStorable6 [2024-02-19 15:17:24,325 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 15:17:24,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:17:24,326 INFO L85 PathProgramCache]: Analyzing trace with hash 951661421, now seen corresponding path program 3 times [2024-02-19 15:17:24,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:17:24,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139321912] [2024-02-19 15:17:24,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:17:24,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:17:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:17:24,650 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:17:24,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:17:24,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139321912] [2024-02-19 15:17:24,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139321912] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:17:24,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564631458] [2024-02-19 15:17:24,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:17:24,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:17:24,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:17:24,652 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 15:17:24,653 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 15:17:24,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-02-19 15:17:24,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:17:24,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:17:24,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:17:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:17:24,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:17:24,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:17:24,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564631458] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:17:24,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:17:24,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-02-19 15:17:24,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533446990] [2024-02-19 15:17:24,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:17:24,968 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-19 15:17:24,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:17:24,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-19 15:17:24,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-02-19 15:17:24,969 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-02-19 15:17:24,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 7358 transitions, 111620 flow. Second operand has 13 states, 13 states have (on average 24.307692307692307) internal successors, (316), 13 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:17:24,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:17:24,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-02-19 15:17:24,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand