./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-collitem-trans.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/chl-collitem-trans.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/chl-collitem-trans.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-collitem-trans.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 16:47:46,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:47:46,899 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:47:46,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:47:46,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:47:46,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:47:46,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:47:46,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:47:46,936 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:47:46,939 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:47:46,940 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:47:46,940 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:47:46,941 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:47:46,942 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:47:46,943 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:47:46,943 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:47:46,943 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:47:46,944 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:47:46,944 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:47:46,944 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:47:46,944 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:47:46,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:47:46,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:47:46,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:47:46,946 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:47:46,946 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:47:46,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:47:46,947 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:47:46,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:47:46,948 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:47:46,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:47:46,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:47:46,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:47:46,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:47:46,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:47:46,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:47:46,950 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:47:46,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:47:46,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:47:46,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:47:46,951 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:47:46,952 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:47:46,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:47:46,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:47:47,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:47:47,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:47:47,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:47:47,231 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:47:47,232 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:47:47,234 INFO L431 ainManager$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/chl-collitem-trans.wvr.yml/witness.yml [2024-01-31 16:47:47,427 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:47:47,429 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:47:47,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c [2024-01-31 16:47:48,545 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:47:48,747 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:47:48,747 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c [2024-01-31 16:47:48,753 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0e2f844d/d0682fbcfe5740cdabd1cd914d7f0bb1/FLAG40d2d14e0 [2024-01-31 16:47:48,764 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0e2f844d/d0682fbcfe5740cdabd1cd914d7f0bb1 [2024-01-31 16:47:48,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:47:48,766 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:47:48,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:47:48,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:47:48,776 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:47:48,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:47:47" (1/2) ... [2024-01-31 16:47:48,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45091573 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:48, skipping insertion in model container [2024-01-31 16:47:48,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:47:47" (1/2) ... [2024-01-31 16:47:48,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5d93a577 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:48, skipping insertion in model container [2024-01-31 16:47:48,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:47:48" (2/2) ... [2024-01-31 16:47:48,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45091573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:48, skipping insertion in model container [2024-01-31 16:47:48,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:47:48" (2/2) ... [2024-01-31 16:47:48,781 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:47:48,831 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:47:48,855 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:47:49,040 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c[3520,3533] [2024-01-31 16:47:49,046 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:47:49,057 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:47:49,100 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c[3520,3533] [2024-01-31 16:47:49,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:47:49,124 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:47:49,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49 WrapperNode [2024-01-31 16:47:49,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:47:49,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:47:49,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:47:49,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:47:49,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49" (1/1) ... [2024-01-31 16:47:49,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49" (1/1) ... [2024-01-31 16:47:49,201 INFO L138 Inliner]: procedures = 23, calls = 45, calls flagged for inlining = 17, calls inlined = 39, statements flattened = 363 [2024-01-31 16:47:49,201 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:47:49,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:47:49,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:47:49,202 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:47:49,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49" (1/1) ... [2024-01-31 16:47:49,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49" (1/1) ... [2024-01-31 16:47:49,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49" (1/1) ... [2024-01-31 16:47:49,236 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-31 16:47:49,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49" (1/1) ... [2024-01-31 16:47:49,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49" (1/1) ... [2024-01-31 16:47:49,245 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49" (1/1) ... [2024-01-31 16:47:49,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49" (1/1) ... [2024-01-31 16:47:49,250 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49" (1/1) ... [2024-01-31 16:47:49,252 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49" (1/1) ... [2024-01-31 16:47:49,255 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:47:49,256 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:47:49,256 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:47:49,256 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:47:49,257 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49" (1/1) ... [2024-01-31 16:47:49,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:47:49,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:47:49,302 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 16:47:49,303 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 16:47:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:47:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:47:49,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:47:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:47:49,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:47:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:47:49,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:47:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:47:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:47:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:47:49,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:47:49,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:47:49,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:47:49,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:47:49,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:47:49,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:47:49,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:47:49,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:47:49,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:47:49,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:47:49,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:47:49,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:47:49,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:47:49,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:47:49,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:47:49,336 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 16:47:49,439 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:47:49,441 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:47:49,863 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:47:49,863 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:47:50,382 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:47:50,382 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:47:50,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:47:50 BoogieIcfgContainer [2024-01-31 16:47:50,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:47:50,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:47:50,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:47:50,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:47:50,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:47:47" (1/4) ... [2024-01-31 16:47:50,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a557c27 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:47:50, skipping insertion in model container [2024-01-31 16:47:50,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:47:48" (2/4) ... [2024-01-31 16:47:50,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a557c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:47:50, skipping insertion in model container [2024-01-31 16:47:50,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:49" (3/4) ... [2024-01-31 16:47:50,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a557c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:47:50, skipping insertion in model container [2024-01-31 16:47:50,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:47:50" (4/4) ... [2024-01-31 16:47:50,394 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-trans.wvr.c [2024-01-31 16:47:50,411 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:47:50,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:47:50,412 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:47:50,501 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:47:50,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 27 transitions, 75 flow [2024-01-31 16:47:50,585 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2024-01-31 16:47:50,586 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:47:50,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 0/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-31 16:47:50,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 27 transitions, 75 flow [2024-01-31 16:47:50,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 23 transitions, 64 flow [2024-01-31 16:47:50,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:47:50,613 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;@44173354, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:47:50,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 16:47:50,661 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:47:50,661 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-01-31 16:47:50,661 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:47:50,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:50,662 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] [2024-01-31 16:47:50,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:50,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:50,667 INFO L85 PathProgramCache]: Analyzing trace with hash -638376441, now seen corresponding path program 1 times [2024-01-31 16:47:50,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:50,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878458477] [2024-01-31 16:47:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:50,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:54,083 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 16:47:54,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:54,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878458477] [2024-01-31 16:47:54,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878458477] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:47:54,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:47:54,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:47:54,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918642711] [2024-01-31 16:47:54,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:47:54,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:47:54,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:47:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:47:54,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:47:54,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 16:47:54,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:54,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:47:54,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:54,619 INFO L124 PetriNetUnfolderBase]: 202/379 cut-off events. [2024-01-31 16:47:54,619 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-01-31 16:47:54,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 379 events. 202/379 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1455 event pairs, 12 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 708. Up to 128 conditions per place. [2024-01-31 16:47:54,628 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 40 selfloop transitions, 6 changer transitions 10/60 dead transitions. [2024-01-31 16:47:54,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 60 transitions, 280 flow [2024-01-31 16:47:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:47:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:47:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-01-31 16:47:54,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-01-31 16:47:54,642 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 64 flow. Second operand 6 states and 99 transitions. [2024-01-31 16:47:54,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 60 transitions, 280 flow [2024-01-31 16:47:54,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 60 transitions, 248 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:47:54,650 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 85 flow [2024-01-31 16:47:54,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=85, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-01-31 16:47:54,655 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-01-31 16:47:54,656 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 85 flow [2024-01-31 16:47:54,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 16:47:54,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:54,657 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] [2024-01-31 16:47:54,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:47:54,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:54,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:54,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1631131833, now seen corresponding path program 2 times [2024-01-31 16:47:54,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:54,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793941060] [2024-01-31 16:47:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:54,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:56,892 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 16:47:56,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:56,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793941060] [2024-01-31 16:47:56,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793941060] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:47:56,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:47:56,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:47:56,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015593426] [2024-01-31 16:47:56,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:47:56,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:47:56,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:56,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:47:56,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:47:56,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:47:56,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 16:47:56,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:56,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:47:56,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:57,361 INFO L124 PetriNetUnfolderBase]: 222/421 cut-off events. [2024-01-31 16:47:57,361 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-01-31 16:47:57,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 421 events. 222/421 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1751 event pairs, 36 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 977. Up to 174 conditions per place. [2024-01-31 16:47:57,365 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 37 selfloop transitions, 6 changer transitions 14/61 dead transitions. [2024-01-31 16:47:57,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 61 transitions, 286 flow [2024-01-31 16:47:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:47:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:47:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-01-31 16:47:57,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-01-31 16:47:57,367 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 85 flow. Second operand 6 states and 99 transitions. [2024-01-31 16:47:57,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 61 transitions, 286 flow [2024-01-31 16:47:57,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 61 transitions, 282 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:47:57,370 INFO L231 Difference]: Finished difference. Result has 40 places, 26 transitions, 96 flow [2024-01-31 16:47:57,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=26} [2024-01-31 16:47:57,371 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-01-31 16:47:57,371 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 96 flow [2024-01-31 16:47:57,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 16:47:57,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:57,371 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] [2024-01-31 16:47:57,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:47:57,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:57,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:57,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1938156565, now seen corresponding path program 3 times [2024-01-31 16:47:57,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:57,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147415530] [2024-01-31 16:47:57,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:57,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:59,030 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 16:47:59,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:59,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147415530] [2024-01-31 16:47:59,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147415530] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:47:59,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:47:59,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:47:59,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032852398] [2024-01-31 16:47:59,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:47:59,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:47:59,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:59,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:47:59,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:47:59,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:47:59,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 26 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 16:47:59,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:59,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:47:59,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:59,341 INFO L124 PetriNetUnfolderBase]: 220/432 cut-off events. [2024-01-31 16:47:59,341 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES. [2024-01-31 16:47:59,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 432 events. 220/432 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1823 event pairs, 20 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 1056. Up to 222 conditions per place. [2024-01-31 16:47:59,345 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 35 selfloop transitions, 5 changer transitions 13/57 dead transitions. [2024-01-31 16:47:59,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 285 flow [2024-01-31 16:47:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:47:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:47:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-01-31 16:47:59,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-01-31 16:47:59,351 INFO L175 Difference]: Start difference. First operand has 40 places, 26 transitions, 96 flow. Second operand 6 states and 96 transitions. [2024-01-31 16:47:59,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 285 flow [2024-01-31 16:47:59,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 261 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-01-31 16:47:59,356 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 96 flow [2024-01-31 16:47:59,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2024-01-31 16:47:59,358 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-01-31 16:47:59,358 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 96 flow [2024-01-31 16:47:59,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 16:47:59,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:59,359 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] [2024-01-31 16:47:59,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:47:59,359 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:59,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:59,360 INFO L85 PathProgramCache]: Analyzing trace with hash -626748799, now seen corresponding path program 4 times [2024-01-31 16:47:59,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:59,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038532852] [2024-01-31 16:47:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:59,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:01,019 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 16:48:01,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:01,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038532852] [2024-01-31 16:48:01,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038532852] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:01,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:01,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:48:01,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537472008] [2024-01-31 16:48:01,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:01,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:48:01,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:01,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:48:01,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:48:01,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:48:01,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 16:48:01,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:01,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:48:01,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:01,367 INFO L124 PetriNetUnfolderBase]: 160/315 cut-off events. [2024-01-31 16:48:01,367 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-01-31 16:48:01,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 315 events. 160/315 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1194 event pairs, 10 based on Foata normal form. 1/315 useless extension candidates. Maximal degree in co-relation 774. Up to 108 conditions per place. [2024-01-31 16:48:01,369 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 35 selfloop transitions, 5 changer transitions 12/56 dead transitions. [2024-01-31 16:48:01,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 276 flow [2024-01-31 16:48:01,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:01,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:01,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-01-31 16:48:01,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2024-01-31 16:48:01,372 INFO L175 Difference]: Start difference. First operand has 42 places, 26 transitions, 96 flow. Second operand 6 states and 95 transitions. [2024-01-31 16:48:01,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 276 flow [2024-01-31 16:48:01,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 261 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-31 16:48:01,375 INFO L231 Difference]: Finished difference. Result has 44 places, 26 transitions, 100 flow [2024-01-31 16:48:01,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2024-01-31 16:48:01,377 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-01-31 16:48:01,377 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 100 flow [2024-01-31 16:48:01,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 16:48:01,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:01,378 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] [2024-01-31 16:48:01,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:48:01,379 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:01,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:01,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1801567071, now seen corresponding path program 5 times [2024-01-31 16:48:01,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:01,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160032995] [2024-01-31 16:48:01,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:01,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:02,971 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 16:48:02,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:02,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160032995] [2024-01-31 16:48:02,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160032995] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:02,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:02,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:48:02,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094428831] [2024-01-31 16:48:02,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:02,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:48:02,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:02,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:48:02,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:48:02,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:48:02,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 16:48:02,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:02,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:48:02,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:03,255 INFO L124 PetriNetUnfolderBase]: 120/244 cut-off events. [2024-01-31 16:48:03,255 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-01-31 16:48:03,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 244 events. 120/244 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 846 event pairs, 24 based on Foata normal form. 1/244 useless extension candidates. Maximal degree in co-relation 630. Up to 126 conditions per place. [2024-01-31 16:48:03,259 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 22 selfloop transitions, 3 changer transitions 18/47 dead transitions. [2024-01-31 16:48:03,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 240 flow [2024-01-31 16:48:03,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-01-31 16:48:03,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2024-01-31 16:48:03,266 INFO L175 Difference]: Start difference. First operand has 44 places, 26 transitions, 100 flow. Second operand 6 states and 86 transitions. [2024-01-31 16:48:03,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 240 flow [2024-01-31 16:48:03,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 235 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:48:03,268 INFO L231 Difference]: Finished difference. Result has 46 places, 23 transitions, 81 flow [2024-01-31 16:48:03,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=46, PETRI_TRANSITIONS=23} [2024-01-31 16:48:03,271 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2024-01-31 16:48:03,271 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 23 transitions, 81 flow [2024-01-31 16:48:03,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 16:48:03,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:03,272 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] [2024-01-31 16:48:03,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:48:03,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:03,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:03,273 INFO L85 PathProgramCache]: Analyzing trace with hash -432646607, now seen corresponding path program 6 times [2024-01-31 16:48:03,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:03,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838209037] [2024-01-31 16:48:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:03,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:04,932 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 16:48:04,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838209037] [2024-01-31 16:48:04,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838209037] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:04,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:04,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:48:04,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969535637] [2024-01-31 16:48:04,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:04,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:48:04,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:04,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:48:04,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:48:04,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:48:04,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 23 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 16:48:04,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:04,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:48:04,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:05,147 INFO L124 PetriNetUnfolderBase]: 50/105 cut-off events. [2024-01-31 16:48:05,147 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-01-31 16:48:05,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 105 events. 50/105 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 228 event pairs, 0 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 280. Up to 67 conditions per place. [2024-01-31 16:48:05,148 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-01-31 16:48:05,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 29 transitions, 144 flow [2024-01-31 16:48:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-01-31 16:48:05,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-01-31 16:48:05,149 INFO L175 Difference]: Start difference. First operand has 46 places, 23 transitions, 81 flow. Second operand 6 states and 69 transitions. [2024-01-31 16:48:05,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 29 transitions, 144 flow [2024-01-31 16:48:05,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 127 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-01-31 16:48:05,150 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-01-31 16:48:05,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-01-31 16:48:05,151 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-01-31 16:48:05,151 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-01-31 16:48:05,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 16:48:05,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-31 16:48:05,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-31 16:48:05,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-31 16:48:05,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-31 16:48:05,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:48:05,155 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2024-01-31 16:48:05,158 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:48:05,158 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:48:05,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:48:05 BasicIcfg [2024-01-31 16:48:05,162 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:48:05,163 INFO L158 Benchmark]: Toolchain (without parser) took 16397.35ms. Allocated memory was 180.4MB in the beginning and 660.6MB in the end (delta: 480.2MB). Free memory was 102.4MB in the beginning and 452.5MB in the end (delta: -350.1MB). Peak memory consumption was 132.3MB. Max. memory is 16.1GB. [2024-01-31 16:48:05,163 INFO L158 Benchmark]: Witness Parser took 0.23ms. Allocated memory is still 180.4MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:48:05,164 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 180.4MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:48:05,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.34ms. Allocated memory is still 180.4MB. Free memory was 102.2MB in the beginning and 148.8MB in the end (delta: -46.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-01-31 16:48:05,164 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.54ms. Allocated memory is still 180.4MB. Free memory was 148.8MB in the beginning and 145.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:48:05,165 INFO L158 Benchmark]: Boogie Preprocessor took 53.68ms. Allocated memory is still 180.4MB. Free memory was 145.5MB in the beginning and 141.6MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 16:48:05,165 INFO L158 Benchmark]: RCFGBuilder took 1127.29ms. Allocated memory is still 180.4MB. Free memory was 141.6MB in the beginning and 84.7MB in the end (delta: 56.9MB). Peak memory consumption was 94.4MB. Max. memory is 16.1GB. [2024-01-31 16:48:05,166 INFO L158 Benchmark]: TraceAbstraction took 14775.97ms. Allocated memory was 180.4MB in the beginning and 660.6MB in the end (delta: 480.2MB). Free memory was 83.7MB in the beginning and 452.5MB in the end (delta: -368.8MB). Peak memory consumption was 111.4MB. Max. memory is 16.1GB. [2024-01-31 16:48:05,167 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.23ms. Allocated memory is still 180.4MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.18ms. Allocated memory is still 180.4MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.34ms. Allocated memory is still 180.4MB. Free memory was 102.2MB in the beginning and 148.8MB in the end (delta: -46.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.54ms. Allocated memory is still 180.4MB. Free memory was 148.8MB in the beginning and 145.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.68ms. Allocated memory is still 180.4MB. Free memory was 145.5MB in the beginning and 141.6MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1127.29ms. Allocated memory is still 180.4MB. Free memory was 141.6MB in the beginning and 84.7MB in the end (delta: 56.9MB). Peak memory consumption was 94.4MB. Max. memory is 16.1GB. * TraceAbstraction took 14775.97ms. Allocated memory was 180.4MB in the beginning and 660.6MB in the end (delta: 480.2MB). Free memory was 83.7MB in the beginning and 452.5MB in the end (delta: -368.8MB). Peak memory consumption was 111.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 100]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 43 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 212 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 212 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 584 IncrementalHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 584 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 4141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:48:05,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE