./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-time-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-time-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-time-trans.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-time-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 16:52:11,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:52:11,673 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:52:11,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:52:11,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:52:11,706 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:52:11,707 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:52:11,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:52:11,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:52:11,712 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:52:11,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:52:11,712 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:52:11,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:52:11,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:52:11,713 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:52:11,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:52:11,713 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:52:11,713 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:52:11,714 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:52:11,714 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:52:11,714 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:52:11,715 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:52:11,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:52:11,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:52:11,715 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:52:11,715 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:52:11,715 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:52:11,715 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:52:11,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:52:11,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:52:11,717 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:52:11,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:52:11,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:52:11,717 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:52:11,717 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:52:11,717 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:52:11,717 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:52:11,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:52:11,718 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:52:11,718 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:52:11,718 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:52:11,718 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:52:11,718 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:52:11,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:52:11,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:52:11,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:52:11,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:52:11,938 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:52:11,938 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:52:11,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-time-trans.wvr.c [2024-01-31 16:52:12,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:52:13,048 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:52:13,049 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-trans.wvr.c [2024-01-31 16:52:13,054 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61905fa93/d304681a53cb4f7292f62c3c3314c005/FLAG250969878 [2024-01-31 16:52:13,063 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61905fa93/d304681a53cb4f7292f62c3c3314c005 [2024-01-31 16:52:13,064 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:52:13,065 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:52:13,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-time-trans.wvr.yml/witness.yml [2024-01-31 16:52:13,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:52:13,172 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:52:13,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:52:13,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:52:13,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:52:13,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:52:13" (1/2) ... [2024-01-31 16:52:13,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23eec1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:52:13, skipping insertion in model container [2024-01-31 16:52:13,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:52:13" (1/2) ... [2024-01-31 16:52:13,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@75c84575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:52:13, skipping insertion in model container [2024-01-31 16:52:13,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:52:13" (2/2) ... [2024-01-31 16:52:13,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23eec1b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13, skipping insertion in model container [2024-01-31 16:52:13,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:52:13" (2/2) ... [2024-01-31 16:52:13,182 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:52:13,209 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:52:13,225 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:52:13,341 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-time-trans.wvr.c[2875,2888] [2024-01-31 16:52:13,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:52:13,353 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:52:13,369 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-time-trans.wvr.c[2875,2888] [2024-01-31 16:52:13,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:52:13,381 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:52:13,382 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13 WrapperNode [2024-01-31 16:52:13,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:52:13,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:52:13,383 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:52:13,383 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:52:13,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13" (1/1) ... [2024-01-31 16:52:13,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13" (1/1) ... [2024-01-31 16:52:13,439 INFO L138 Inliner]: procedures = 23, calls = 39, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 225 [2024-01-31 16:52:13,440 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:52:13,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:52:13,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:52:13,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:52:13,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13" (1/1) ... [2024-01-31 16:52:13,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13" (1/1) ... [2024-01-31 16:52:13,463 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13" (1/1) ... [2024-01-31 16:52:13,482 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 16:52:13,487 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13" (1/1) ... [2024-01-31 16:52:13,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13" (1/1) ... [2024-01-31 16:52:13,497 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13" (1/1) ... [2024-01-31 16:52:13,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13" (1/1) ... [2024-01-31 16:52:13,506 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13" (1/1) ... [2024-01-31 16:52:13,511 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13" (1/1) ... [2024-01-31 16:52:13,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:52:13,518 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:52:13,519 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:52:13,519 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:52:13,520 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13" (1/1) ... [2024-01-31 16:52:13,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:52:13,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:52:13,557 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 16:52:13,575 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 16:52:13,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:52:13,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:52:13,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:52:13,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:52:13,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:52:13,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:52:13,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:52:13,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:52:13,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:52:13,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:52:13,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:52:13,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:52:13,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:52:13,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:52:13,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:52:13,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:52:13,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:52:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:52:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:52:13,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:52:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:52:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:52:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:52:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:52:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:52:13,599 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 16:52:13,713 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:52:13,715 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:52:13,996 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:52:13,997 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:52:14,247 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:52:14,248 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:52:14,248 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:52:14 BoogieIcfgContainer [2024-01-31 16:52:14,249 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:52:14,251 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:52:14,251 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:52:14,254 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:52:14,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:52:13" (1/4) ... [2024-01-31 16:52:14,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9ac7db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:52:14, skipping insertion in model container [2024-01-31 16:52:14,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:52:13" (2/4) ... [2024-01-31 16:52:14,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9ac7db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:52:14, skipping insertion in model container [2024-01-31 16:52:14,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:52:13" (3/4) ... [2024-01-31 16:52:14,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9ac7db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:52:14, skipping insertion in model container [2024-01-31 16:52:14,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:52:14" (4/4) ... [2024-01-31 16:52:14,274 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-trans.wvr.c [2024-01-31 16:52:14,287 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:52:14,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:52:14,288 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:52:14,353 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:52:14,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 27 transitions, 75 flow [2024-01-31 16:52:14,423 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2024-01-31 16:52:14,423 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:52:14,425 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 20 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 16:52:14,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 27 transitions, 75 flow [2024-01-31 16:52:14,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 23 transitions, 64 flow [2024-01-31 16:52:14,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:52:14,446 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;@1881bdd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:52:14,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 16:52:14,459 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:52:14,459 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-01-31 16:52:14,459 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:52:14,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:14,460 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 16:52:14,461 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 16:52:14,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:14,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1930434512, now seen corresponding path program 1 times [2024-01-31 16:52:14,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:14,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982722011] [2024-01-31 16:52:14,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:14,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:15,364 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 16:52:15,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:15,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982722011] [2024-01-31 16:52:15,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982722011] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:15,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:15,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:15,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408815221] [2024-01-31 16:52:15,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:15,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:15,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:15,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:15,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:15,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:52:15,401 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 16:52:15,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:15,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:52:15,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:15,684 INFO L124 PetriNetUnfolderBase]: 202/385 cut-off events. [2024-01-31 16:52:15,684 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-01-31 16:52:15,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 385 events. 202/385 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1540 event pairs, 48 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 575. Up to 128 conditions per place. [2024-01-31 16:52:15,689 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 36 selfloop transitions, 2 changer transitions 10/52 dead transitions. [2024-01-31 16:52:15,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 52 transitions, 242 flow [2024-01-31 16:52:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-01-31 16:52:15,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-01-31 16:52:15,699 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 64 flow. Second operand 5 states and 84 transitions. [2024-01-31 16:52:15,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 52 transitions, 242 flow [2024-01-31 16:52:15,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 52 transitions, 214 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:52:15,704 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 67 flow [2024-01-31 16:52:15,705 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2024-01-31 16:52:15,708 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2024-01-31 16:52:15,708 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 67 flow [2024-01-31 16:52:15,709 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 16:52:15,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:15,709 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 16:52:15,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:52:15,709 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 16:52:15,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:15,710 INFO L85 PathProgramCache]: Analyzing trace with hash 429915562, now seen corresponding path program 2 times [2024-01-31 16:52:15,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:15,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496406848] [2024-01-31 16:52:15,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:15,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:16,026 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 16:52:16,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:16,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496406848] [2024-01-31 16:52:16,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496406848] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:16,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:16,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:16,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834875482] [2024-01-31 16:52:16,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:16,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:16,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:16,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:16,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:16,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:52:16,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 67 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 16:52:16,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:16,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:52:16,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:16,244 INFO L124 PetriNetUnfolderBase]: 222/422 cut-off events. [2024-01-31 16:52:16,244 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-01-31 16:52:16,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 422 events. 222/422 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1817 event pairs, 24 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 961. Up to 174 conditions per place. [2024-01-31 16:52:16,249 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 36 selfloop transitions, 2 changer transitions 14/56 dead transitions. [2024-01-31 16:52:16,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 258 flow [2024-01-31 16:52:16,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-01-31 16:52:16,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6370370370370371 [2024-01-31 16:52:16,254 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 67 flow. Second operand 5 states and 86 transitions. [2024-01-31 16:52:16,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 258 flow [2024-01-31 16:52:16,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 56 transitions, 251 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:52:16,260 INFO L231 Difference]: Finished difference. Result has 38 places, 24 transitions, 77 flow [2024-01-31 16:52:16,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=38, PETRI_TRANSITIONS=24} [2024-01-31 16:52:16,265 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-01-31 16:52:16,265 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 77 flow [2024-01-31 16:52:16,265 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 16:52:16,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:16,265 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 16:52:16,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:52:16,265 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 16:52:16,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:16,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1156821912, now seen corresponding path program 3 times [2024-01-31 16:52:16,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:16,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673905322] [2024-01-31 16:52:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:16,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:16,600 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 16:52:16,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:16,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673905322] [2024-01-31 16:52:16,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673905322] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:16,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:16,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:16,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651493593] [2024-01-31 16:52:16,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:16,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:16,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:16,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:16,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:16,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:52:16,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 77 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 16:52:16,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:16,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:52:16,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:16,775 INFO L124 PetriNetUnfolderBase]: 176/348 cut-off events. [2024-01-31 16:52:16,775 INFO L125 PetriNetUnfolderBase]: For 347/347 co-relation queries the response was YES. [2024-01-31 16:52:16,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 348 events. 176/348 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1357 event pairs, 38 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 855. Up to 126 conditions per place. [2024-01-31 16:52:16,777 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 36 selfloop transitions, 3 changer transitions 10/53 dead transitions. [2024-01-31 16:52:16,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 257 flow [2024-01-31 16:52:16,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:16,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-01-31 16:52:16,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-01-31 16:52:16,778 INFO L175 Difference]: Start difference. First operand has 38 places, 24 transitions, 77 flow. Second operand 5 states and 84 transitions. [2024-01-31 16:52:16,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 257 flow [2024-01-31 16:52:16,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 238 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-31 16:52:16,780 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 88 flow [2024-01-31 16:52:16,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2024-01-31 16:52:16,780 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-01-31 16:52:16,781 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 88 flow [2024-01-31 16:52:16,781 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 16:52:16,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:16,781 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 16:52:16,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:52:16,781 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 16:52:16,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:16,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1250435144, now seen corresponding path program 4 times [2024-01-31 16:52:16,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:16,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942365211] [2024-01-31 16:52:16,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:16,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:17,043 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 16:52:17,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:17,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942365211] [2024-01-31 16:52:17,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942365211] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:17,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:17,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:17,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586967714] [2024-01-31 16:52:17,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:17,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:17,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:17,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:17,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:17,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:52:17,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 88 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 16:52:17,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:17,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:52:17,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:17,198 INFO L124 PetriNetUnfolderBase]: 186/368 cut-off events. [2024-01-31 16:52:17,199 INFO L125 PetriNetUnfolderBase]: For 410/410 co-relation queries the response was YES. [2024-01-31 16:52:17,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 368 events. 186/368 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1500 event pairs, 32 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 975. Up to 158 conditions per place. [2024-01-31 16:52:17,200 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 34 selfloop transitions, 2 changer transitions 14/54 dead transitions. [2024-01-31 16:52:17,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 275 flow [2024-01-31 16:52:17,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:17,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-01-31 16:52:17,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-01-31 16:52:17,201 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 88 flow. Second operand 5 states and 84 transitions. [2024-01-31 16:52:17,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 275 flow [2024-01-31 16:52:17,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 268 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:52:17,217 INFO L231 Difference]: Finished difference. Result has 44 places, 25 transitions, 97 flow [2024-01-31 16:52:17,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=44, PETRI_TRANSITIONS=25} [2024-01-31 16:52:17,217 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-01-31 16:52:17,218 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 25 transitions, 97 flow [2024-01-31 16:52:17,218 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 16:52:17,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:17,218 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 16:52:17,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:52:17,218 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 16:52:17,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:17,219 INFO L85 PathProgramCache]: Analyzing trace with hash 177231796, now seen corresponding path program 5 times [2024-01-31 16:52:17,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:17,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373053420] [2024-01-31 16:52:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:17,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:17,491 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 16:52:17,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:17,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373053420] [2024-01-31 16:52:17,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373053420] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:17,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:17,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:17,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678531313] [2024-01-31 16:52:17,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:17,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:17,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:17,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:17,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:17,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:52:17,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 25 transitions, 97 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 16:52:17,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:17,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:52:17,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:17,644 INFO L124 PetriNetUnfolderBase]: 128/261 cut-off events. [2024-01-31 16:52:17,644 INFO L125 PetriNetUnfolderBase]: For 497/497 co-relation queries the response was YES. [2024-01-31 16:52:17,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 261 events. 128/261 cut-off events. For 497/497 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 936 event pairs, 22 based on Foata normal form. 1/260 useless extension candidates. Maximal degree in co-relation 739. Up to 82 conditions per place. [2024-01-31 16:52:17,646 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 23 selfloop transitions, 1 changer transitions 23/51 dead transitions. [2024-01-31 16:52:17,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 258 flow [2024-01-31 16:52:17,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-01-31 16:52:17,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2024-01-31 16:52:17,647 INFO L175 Difference]: Start difference. First operand has 44 places, 25 transitions, 97 flow. Second operand 5 states and 82 transitions. [2024-01-31 16:52:17,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 258 flow [2024-01-31 16:52:17,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 246 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-31 16:52:17,649 INFO L231 Difference]: Finished difference. Result has 45 places, 23 transitions, 77 flow [2024-01-31 16:52:17,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=45, PETRI_TRANSITIONS=23} [2024-01-31 16:52:17,649 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2024-01-31 16:52:17,649 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 23 transitions, 77 flow [2024-01-31 16:52:17,650 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 16:52:17,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:52:17,650 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 16:52:17,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:52:17,650 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 16:52:17,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:52:17,651 INFO L85 PathProgramCache]: Analyzing trace with hash -630220704, now seen corresponding path program 6 times [2024-01-31 16:52:17,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:52:17,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786065349] [2024-01-31 16:52:17,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:52:17,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:52:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:52:17,852 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 16:52:17,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:52:17,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786065349] [2024-01-31 16:52:17,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786065349] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:52:17,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:52:17,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:52:17,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789861064] [2024-01-31 16:52:17,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:52:17,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:52:17,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:52:17,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:52:17,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:52:17,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:52:17,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 23 transitions, 77 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 16:52:17,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:52:17,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:52:17,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:52:17,963 INFO L124 PetriNetUnfolderBase]: 60/132 cut-off events. [2024-01-31 16:52:17,963 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-01-31 16:52:17,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 132 events. 60/132 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 348 event pairs, 10 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 373. Up to 67 conditions per place. [2024-01-31 16:52:17,964 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-01-31 16:52:17,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 163 flow [2024-01-31 16:52:17,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:52:17,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:52:17,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-01-31 16:52:17,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-01-31 16:52:17,965 INFO L175 Difference]: Start difference. First operand has 45 places, 23 transitions, 77 flow. Second operand 5 states and 66 transitions. [2024-01-31 16:52:17,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 33 transitions, 163 flow [2024-01-31 16:52:17,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 149 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:52:17,966 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-01-31 16:52:17,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=34, 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=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-01-31 16:52:17,967 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-01-31 16:52:17,967 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-01-31 16:52:17,967 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 16:52:17,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-31 16:52:17,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-31 16:52:17,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-31 16:52:17,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-31 16:52:17,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:52:17,971 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2024-01-31 16:52:17,973 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:52:17,973 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:52:17,976 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:52:17 BasicIcfg [2024-01-31 16:52:17,976 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:52:17,977 INFO L158 Benchmark]: Toolchain (without parser) took 4804.57ms. Allocated memory was 169.9MB in the beginning and 341.8MB in the end (delta: 172.0MB). Free memory was 95.0MB in the beginning and 167.4MB in the end (delta: -72.4MB). Peak memory consumption was 100.7MB. Max. memory is 16.1GB. [2024-01-31 16:52:17,977 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:52:17,977 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 169.9MB. Free memory is still 99.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:52:17,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.66ms. Allocated memory is still 169.9MB. Free memory was 94.7MB in the beginning and 81.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-31 16:52:17,978 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.78ms. Allocated memory is still 169.9MB. Free memory was 81.2MB in the beginning and 140.6MB in the end (delta: -59.4MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2024-01-31 16:52:17,978 INFO L158 Benchmark]: Boogie Preprocessor took 74.72ms. Allocated memory is still 169.9MB. Free memory was 140.6MB in the beginning and 138.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:52:17,978 INFO L158 Benchmark]: RCFGBuilder took 730.47ms. Allocated memory is still 169.9MB. Free memory was 138.1MB in the beginning and 50.1MB in the end (delta: 88.1MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. [2024-01-31 16:52:17,979 INFO L158 Benchmark]: TraceAbstraction took 3725.72ms. Allocated memory was 169.9MB in the beginning and 341.8MB in the end (delta: 172.0MB). Free memory was 49.5MB in the beginning and 167.4MB in the end (delta: -117.9MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. [2024-01-31 16:52:17,980 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 169.9MB. Free memory is still 99.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.66ms. Allocated memory is still 169.9MB. Free memory was 94.7MB in the beginning and 81.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.78ms. Allocated memory is still 169.9MB. Free memory was 81.2MB in the beginning and 140.6MB in the end (delta: -59.4MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.72ms. Allocated memory is still 169.9MB. Free memory was 140.6MB in the beginning and 138.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 730.47ms. Allocated memory is still 169.9MB. Free memory was 138.1MB in the beginning and 50.1MB in the end (delta: 88.1MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3725.72ms. Allocated memory was 169.9MB in the beginning and 341.8MB in the end (delta: 172.0MB). Free memory was 49.5MB in the beginning and 167.4MB in the end (delta: -117.9MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: 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: 3.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 149 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 149 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 684 IncrementalHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 684 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=4, InterpolantAutomatonStates: 30, 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, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 3050 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 16:52:18,005 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