./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-min-max-dec.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-min-max-dec.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:04:47,878 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:04:47,952 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:04:47,956 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:04:47,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:04:47,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:04:47,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:04:47,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:04:47,990 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:04:47,990 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:04:47,991 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:04:47,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:04:47,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:04:47,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:04:47,992 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:04:47,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:04:47,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:04:47,993 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:04:47,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:04:47,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:04:47,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:04:47,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:04:47,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:04:47,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:04:47,996 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:04:47,996 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:04:47,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:04:47,996 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:04:47,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:04:47,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:04:47,997 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:04:47,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:04:47,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:04:47,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:04:47,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:04:47,998 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:04:47,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:04:47,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:04:47,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:04:47,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:04:47,999 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:04:47,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:04:48,000 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:04:48,000 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:04:48,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:04:48,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:04:48,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:04:48,286 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:04:48,287 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:04:48,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-min-max-dec.wvr.yml/witness.yml [2024-01-31 17:04:48,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:04:48,458 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:04:48,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2024-01-31 17:04:49,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:04:49,843 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:04:49,844 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2024-01-31 17:04:49,852 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af712fb6c/27dabb84b3314e82b0c3715020303e52/FLAGa3c3caad5 [2024-01-31 17:04:49,871 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af712fb6c/27dabb84b3314e82b0c3715020303e52 [2024-01-31 17:04:49,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:04:49,873 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:04:49,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:04:49,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:04:49,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:04:49,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:04:48" (1/2) ... [2024-01-31 17:04:49,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6264cc5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:04:49, skipping insertion in model container [2024-01-31 17:04:49,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:04:48" (1/2) ... [2024-01-31 17:04:49,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5947a463 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:04:49, skipping insertion in model container [2024-01-31 17:04:49,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:04:49" (2/2) ... [2024-01-31 17:04:49,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6264cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:49, skipping insertion in model container [2024-01-31 17:04:49,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:04:49" (2/2) ... [2024-01-31 17:04:49,886 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:04:49,957 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 17:04:49,982 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:04:50,169 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-min-max-dec.wvr.c[3071,3084] [2024-01-31 17:04:50,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:04:50,189 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:04:50,229 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-min-max-dec.wvr.c[3071,3084] [2024-01-31 17:04:50,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:04:50,256 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:04:50,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50 WrapperNode [2024-01-31 17:04:50,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:04:50,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:04:50,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:04:50,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:04:50,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50" (1/1) ... [2024-01-31 17:04:50,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50" (1/1) ... [2024-01-31 17:04:50,313 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 141 [2024-01-31 17:04:50,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:04:50,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:04:50,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:04:50,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:04:50,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50" (1/1) ... [2024-01-31 17:04:50,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50" (1/1) ... [2024-01-31 17:04:50,337 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50" (1/1) ... [2024-01-31 17:04:50,365 INFO L175 MemorySlicer]: Split 20 memory accesses to 6 slices as follows [2, 2, 10, 2, 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 6 writes are split as follows [0, 1, 2, 1, 1, 1]. [2024-01-31 17:04:50,366 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50" (1/1) ... [2024-01-31 17:04:50,366 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50" (1/1) ... [2024-01-31 17:04:50,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50" (1/1) ... [2024-01-31 17:04:50,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50" (1/1) ... [2024-01-31 17:04:50,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50" (1/1) ... [2024-01-31 17:04:50,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50" (1/1) ... [2024-01-31 17:04:50,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:04:50,389 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:04:50,389 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:04:50,389 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:04:50,390 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50" (1/1) ... [2024-01-31 17:04:50,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:04:50,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:04:50,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:04:50,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:04:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:04:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:04:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:04:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:04:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:04:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:04:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:04:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 17:04:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:04:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:04:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:04:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:04:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:04:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 17:04:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:04:50,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:04:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:04:50,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:04:50,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:04:50,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:04:50,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 17:04:50,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 17:04:50,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:04:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:04:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:04:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:04:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:04:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 17:04:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:04:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:04:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 17:04:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:04:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:04:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:04:50,502 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:04:50,615 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:04:50,616 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:04:50,863 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:04:50,863 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:04:51,114 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:04:51,115 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-31 17:04:51,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:04:51 BoogieIcfgContainer [2024-01-31 17:04:51,117 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:04:51,121 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:04:51,121 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:04:51,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:04:51,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:04:48" (1/4) ... [2024-01-31 17:04:51,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a53d5c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:04:51, skipping insertion in model container [2024-01-31 17:04:51,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:04:49" (2/4) ... [2024-01-31 17:04:51,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a53d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:04:51, skipping insertion in model container [2024-01-31 17:04:51,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:04:50" (3/4) ... [2024-01-31 17:04:51,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a53d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:04:51, skipping insertion in model container [2024-01-31 17:04:51,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:04:51" (4/4) ... [2024-01-31 17:04:51,128 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2024-01-31 17:04:51,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:04:51,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:04:51,145 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:04:51,211 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 17:04:51,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 126 flow [2024-01-31 17:04:51,362 INFO L124 PetriNetUnfolderBase]: 4/45 cut-off events. [2024-01-31 17:04:51,362 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:04:51,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 45 events. 4/45 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 84 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-01-31 17:04:51,367 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 126 flow [2024-01-31 17:04:51,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 112 flow [2024-01-31 17:04:51,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:04:51,393 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35945919, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:04:51,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 17:04:51,415 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:04:51,415 INFO L124 PetriNetUnfolderBase]: 4/43 cut-off events. [2024-01-31 17:04:51,416 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:04:51,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:04:51,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:04:51,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:04:51,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:04:51,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2110549717, now seen corresponding path program 1 times [2024-01-31 17:04:51,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:04:51,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858687345] [2024-01-31 17:04:51,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:04:51,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:04:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:04:51,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:04:51,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:04:51,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858687345] [2024-01-31 17:04:51,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858687345] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:04:51,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:04:51,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:04:51,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385926407] [2024-01-31 17:04:51,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:04:51,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:04:51,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:04:51,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:04:51,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:04:51,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-01-31 17:04:51,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:04:51,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:04:51,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-01-31 17:04:51,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:04:52,717 INFO L124 PetriNetUnfolderBase]: 3542/5179 cut-off events. [2024-01-31 17:04:52,717 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-01-31 17:04:52,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10271 conditions, 5179 events. 3542/5179 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 30730 event pairs, 1676 based on Foata normal form. 174/5137 useless extension candidates. Maximal degree in co-relation 9131. Up to 3161 conditions per place. [2024-01-31 17:04:52,763 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 47 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-01-31 17:04:52,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 257 flow [2024-01-31 17:04:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:04:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:04:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-01-31 17:04:52,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5867346938775511 [2024-01-31 17:04:52,778 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 112 flow. Second operand 4 states and 115 transitions. [2024-01-31 17:04:52,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 257 flow [2024-01-31 17:04:52,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 235 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 17:04:52,794 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 110 flow [2024-01-31 17:04:52,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-01-31 17:04:52,799 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2024-01-31 17:04:52,800 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 110 flow [2024-01-31 17:04:52,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:04:52,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:04:52,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:04:52,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:04:52,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:04:52,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:04:52,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2060181120, now seen corresponding path program 1 times [2024-01-31 17:04:52,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:04:52,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429835315] [2024-01-31 17:04:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:04:52,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:04:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:04:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:04:53,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:04:53,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429835315] [2024-01-31 17:04:53,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429835315] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:04:53,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:04:53,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:04:53,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759456782] [2024-01-31 17:04:53,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:04:53,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:04:53,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:04:53,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:04:53,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:04:53,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-01-31 17:04:53,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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) [2024-01-31 17:04:53,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:04:53,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-01-31 17:04:53,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:04:53,758 INFO L124 PetriNetUnfolderBase]: 4551/6666 cut-off events. [2024-01-31 17:04:53,760 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2024-01-31 17:04:53,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14137 conditions, 6666 events. 4551/6666 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 39310 event pairs, 2562 based on Foata normal form. 192/6676 useless extension candidates. Maximal degree in co-relation 2151. Up to 4460 conditions per place. [2024-01-31 17:04:53,803 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 50 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-01-31 17:04:53,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 267 flow [2024-01-31 17:04:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:04:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:04:53,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-01-31 17:04:53,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-01-31 17:04:53,812 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 110 flow. Second operand 4 states and 112 transitions. [2024-01-31 17:04:53,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 267 flow [2024-01-31 17:04:53,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 261 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:04:53,820 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 120 flow [2024-01-31 17:04:53,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-01-31 17:04:53,822 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2024-01-31 17:04:53,822 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 120 flow [2024-01-31 17:04:53,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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) [2024-01-31 17:04:53,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:04:53,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:04:53,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:04:53,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:04:53,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:04:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash 649085594, now seen corresponding path program 1 times [2024-01-31 17:04:53,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:04:53,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903284758] [2024-01-31 17:04:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:04:53,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:04:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:04:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:04:53,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:04:53,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903284758] [2024-01-31 17:04:53,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903284758] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:04:53,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:04:53,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:04:53,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594534646] [2024-01-31 17:04:53,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:04:53,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:04:53,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:04:53,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:04:53,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:04:53,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-01-31 17:04:53,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:04:53,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:04:53,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-01-31 17:04:53,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:04:54,687 INFO L124 PetriNetUnfolderBase]: 5176/7548 cut-off events. [2024-01-31 17:04:54,687 INFO L125 PetriNetUnfolderBase]: For 1544/1809 co-relation queries the response was YES. [2024-01-31 17:04:54,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17048 conditions, 7548 events. 5176/7548 cut-off events. For 1544/1809 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 44791 event pairs, 3063 based on Foata normal form. 517/7937 useless extension candidates. Maximal degree in co-relation 4322. Up to 5016 conditions per place. [2024-01-31 17:04:54,740 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 52 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-01-31 17:04:54,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 288 flow [2024-01-31 17:04:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:04:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:04:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-01-31 17:04:54,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-01-31 17:04:54,742 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 120 flow. Second operand 4 states and 112 transitions. [2024-01-31 17:04:54,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 288 flow [2024-01-31 17:04:54,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 66 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:04:54,748 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 130 flow [2024-01-31 17:04:54,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-01-31 17:04:54,751 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-01-31 17:04:54,751 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 130 flow [2024-01-31 17:04:54,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:04:54,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:04:54,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:04:54,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:04:54,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:04:54,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:04:54,753 INFO L85 PathProgramCache]: Analyzing trace with hash 625032986, now seen corresponding path program 1 times [2024-01-31 17:04:54,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:04:54,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108192390] [2024-01-31 17:04:54,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:04:54,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:04:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:04:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:04:54,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:04:54,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108192390] [2024-01-31 17:04:54,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108192390] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:04:54,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:04:54,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:04:54,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333300705] [2024-01-31 17:04:54,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:04:54,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:04:54,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:04:54,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:04:54,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:04:54,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-01-31 17:04:54,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:04:54,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:04:54,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-01-31 17:04:54,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:04:55,445 INFO L124 PetriNetUnfolderBase]: 4444/6470 cut-off events. [2024-01-31 17:04:55,445 INFO L125 PetriNetUnfolderBase]: For 1676/2144 co-relation queries the response was YES. [2024-01-31 17:04:55,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15415 conditions, 6470 events. 4444/6470 cut-off events. For 1676/2144 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 38202 event pairs, 3717 based on Foata normal form. 468/6823 useless extension candidates. Maximal degree in co-relation 4297. Up to 6001 conditions per place. [2024-01-31 17:04:55,482 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 34 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2024-01-31 17:04:55,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 204 flow [2024-01-31 17:04:55,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:04:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:04:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-01-31 17:04:55,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578231292517006 [2024-01-31 17:04:55,484 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 130 flow. Second operand 3 states and 82 transitions. [2024-01-31 17:04:55,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 204 flow [2024-01-31 17:04:55,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:04:55,487 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 138 flow [2024-01-31 17:04:55,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-01-31 17:04:55,487 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2024-01-31 17:04:55,488 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 138 flow [2024-01-31 17:04:55,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:04:55,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:04:55,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:04:55,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:04:55,489 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:04:55,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:04:55,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1092804233, now seen corresponding path program 1 times [2024-01-31 17:04:55,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:04:55,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014606645] [2024-01-31 17:04:55,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:04:55,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:04:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:04:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:04:56,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:04:56,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014606645] [2024-01-31 17:04:56,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014606645] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:04:56,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284771755] [2024-01-31 17:04:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:04:56,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:04:56,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:04:56,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:04:56,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:04:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:04:56,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-31 17:04:56,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:04:56,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-01-31 17:04:56,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-01-31 17:04:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:04:56,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:04:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:04:57,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284771755] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:04:57,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:04:57,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 8] total 22 [2024-01-31 17:04:57,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111558897] [2024-01-31 17:04:57,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:04:57,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-31 17:04:57,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:04:57,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-31 17:04:57,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-01-31 17:04:57,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-01-31 17:04:57,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 138 flow. Second operand has 22 states, 22 states have (on average 17.59090909090909) internal successors, (387), 22 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:04:57,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:04:57,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-01-31 17:04:57,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:05:09,878 INFO L124 PetriNetUnfolderBase]: 101431/145937 cut-off events. [2024-01-31 17:05:09,878 INFO L125 PetriNetUnfolderBase]: For 46206/46206 co-relation queries the response was YES. [2024-01-31 17:05:10,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345372 conditions, 145937 events. 101431/145937 cut-off events. For 46206/46206 co-relation queries the response was YES. Maximal size of possible extension queue 5331. Compared 1138242 event pairs, 2521 based on Foata normal form. 21/145951 useless extension candidates. Maximal degree in co-relation 345358. Up to 21237 conditions per place. [2024-01-31 17:05:10,598 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 682 selfloop transitions, 118 changer transitions 803/1612 dead transitions. [2024-01-31 17:05:10,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 1612 transitions, 7991 flow [2024-01-31 17:05:10,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-01-31 17:05:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2024-01-31 17:05:10,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 2650 transitions. [2024-01-31 17:05:10,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145640074211502 [2024-01-31 17:05:10,608 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 138 flow. Second operand 88 states and 2650 transitions. [2024-01-31 17:05:10,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 1612 transitions, 7991 flow [2024-01-31 17:05:11,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 1612 transitions, 7987 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:05:11,290 INFO L231 Difference]: Finished difference. Result has 213 places, 189 transitions, 1192 flow [2024-01-31 17:05:11,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=1192, PETRI_PLACES=213, PETRI_TRANSITIONS=189} [2024-01-31 17:05:11,291 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 160 predicate places. [2024-01-31 17:05:11,292 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 189 transitions, 1192 flow [2024-01-31 17:05:11,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.59090909090909) internal successors, (387), 22 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:11,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:11,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:11,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-31 17:05:11,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:05:11,511 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:05:11,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:11,511 INFO L85 PathProgramCache]: Analyzing trace with hash -533370851, now seen corresponding path program 2 times [2024-01-31 17:05:11,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:11,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402967243] [2024-01-31 17:05:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:11,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 17:05:11,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:11,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402967243] [2024-01-31 17:05:11,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402967243] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:05:11,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:05:11,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:05:11,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872187312] [2024-01-31 17:05:11,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:05:11,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:05:11,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:11,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:05:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:05:11,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-01-31 17:05:11,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 189 transitions, 1192 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:11,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:11,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-01-31 17:05:11,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:05:29,704 INFO L124 PetriNetUnfolderBase]: 79216/119075 cut-off events. [2024-01-31 17:05:29,705 INFO L125 PetriNetUnfolderBase]: For 3423505/3425413 co-relation queries the response was YES. [2024-01-31 17:05:31,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606646 conditions, 119075 events. 79216/119075 cut-off events. For 3423505/3425413 co-relation queries the response was YES. Maximal size of possible extension queue 4168. Compared 981836 event pairs, 14335 based on Foata normal form. 1395/120028 useless extension candidates. Maximal degree in co-relation 606552. Up to 55962 conditions per place. [2024-01-31 17:05:31,774 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 164 selfloop transitions, 4 changer transitions 313/504 dead transitions. [2024-01-31 17:05:31,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 504 transitions, 3912 flow [2024-01-31 17:05:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:05:31,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:05:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-01-31 17:05:31,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-01-31 17:05:31,776 INFO L175 Difference]: Start difference. First operand has 213 places, 189 transitions, 1192 flow. Second operand 5 states and 155 transitions. [2024-01-31 17:05:31,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 504 transitions, 3912 flow [2024-01-31 17:06:18,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 504 transitions, 3726 flow, removed 57 selfloop flow, removed 37 redundant places. [2024-01-31 17:06:18,481 INFO L231 Difference]: Finished difference. Result has 140 places, 127 transitions, 763 flow [2024-01-31 17:06:18,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=763, PETRI_PLACES=140, PETRI_TRANSITIONS=127} [2024-01-31 17:06:18,487 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 87 predicate places. [2024-01-31 17:06:18,488 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 127 transitions, 763 flow [2024-01-31 17:06:18,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:06:18,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:06:18,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:06:18,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:06:18,489 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:06:18,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:06:18,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1067476621, now seen corresponding path program 3 times [2024-01-31 17:06:18,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:06:18,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412289431] [2024-01-31 17:06:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:06:18,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:06:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:06:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:06:18,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:06:18,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412289431] [2024-01-31 17:06:18,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412289431] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:06:18,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948261353] [2024-01-31 17:06:18,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:06:18,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:06:18,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:06:18,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:06:18,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 17:06:18,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-31 17:06:18,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:06:18,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:06:18,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:06:18,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:06:18,997 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 62 treesize of output 38 [2024-01-31 17:06:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:06:19,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:06:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:06:19,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948261353] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:06:19,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:06:19,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2024-01-31 17:06:19,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116051164] [2024-01-31 17:06:19,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:06:19,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:06:19,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:06:19,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:06:19,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-01-31 17:06:19,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-01-31 17:06:19,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 127 transitions, 763 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:06:19,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:06:19,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-01-31 17:06:19,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand