./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-min-max-inc.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-min-max-inc.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:05:41,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:05:41,291 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:05:41,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:05:41,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:05:41,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:05:41,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:05:41,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:05:41,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:05:41,323 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:05:41,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:05:41,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:05:41,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:05:41,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:05:41,326 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:05:41,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:05:41,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:05:41,326 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:05:41,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:05:41,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:05:41,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:05:41,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:05:41,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:05:41,328 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:05:41,329 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:05:41,329 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:05:41,329 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:05:41,329 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:05:41,330 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:05:41,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:05:41,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:05:41,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:05:41,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:05:41,331 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:05:41,331 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:05:41,331 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:05:41,332 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:05:41,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:05:41,332 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:05:41,332 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:05:41,332 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:05:41,332 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:05:41,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:05:41,333 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:05:41,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:05:41,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:05:41,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:05:41,547 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:05:41,548 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:05:41,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2024-01-31 17:05:42,533 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:05:42,755 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:05:42,757 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2024-01-31 17:05:42,769 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c066c4f/45fef252598e4dbf95bcfc45c4a18cea/FLAGc4f5e1691 [2024-01-31 17:05:42,782 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c066c4f/45fef252598e4dbf95bcfc45c4a18cea [2024-01-31 17:05:42,785 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:05:42,785 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:05:42,787 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-min-max-inc.wvr.yml/witness.yml [2024-01-31 17:05:42,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:05:42,908 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:05:42,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:05:42,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:05:42,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:05:42,914 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:05:42" (1/2) ... [2024-01-31 17:05:42,915 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621c921d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:42, skipping insertion in model container [2024-01-31 17:05:42,915 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:05:42" (1/2) ... [2024-01-31 17:05:42,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a77a7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:42, skipping insertion in model container [2024-01-31 17:05:42,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:05:42" (2/2) ... [2024-01-31 17:05:42,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621c921d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:05:42, skipping insertion in model container [2024-01-31 17:05:42,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:05:42" (2/2) ... [2024-01-31 17:05:42,917 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:05:42,964 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 17:05:42,984 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:05:43,140 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c[3070,3083] [2024-01-31 17:05:43,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:05:43,159 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:05:43,176 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c[3070,3083] [2024-01-31 17:05:43,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:05:43,189 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:05:43,189 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:05:43 WrapperNode [2024-01-31 17:05:43,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:05:43,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:05:43,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:05:43,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:05:43,195 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 05:05:43" (1/1) ... [2024-01-31 17:05:43,210 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 05:05:43" (1/1) ... [2024-01-31 17:05:43,226 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 141 [2024-01-31 17:05:43,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:05:43,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:05:43,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:05:43,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:05:43,234 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 05:05:43" (1/1) ... [2024-01-31 17:05:43,234 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 05:05:43" (1/1) ... [2024-01-31 17:05:43,237 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 05:05:43" (1/1) ... [2024-01-31 17:05:43,249 INFO L175 MemorySlicer]: Split 20 memory accesses to 6 slices as follows [2, 2, 10, 2, 2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 2, 1, 1, 1]. [2024-01-31 17:05:43,249 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 05:05:43" (1/1) ... [2024-01-31 17:05:43,249 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 05:05:43" (1/1) ... [2024-01-31 17:05:43,256 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 05:05:43" (1/1) ... [2024-01-31 17:05:43,259 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 05:05:43" (1/1) ... [2024-01-31 17:05:43,261 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 05:05:43" (1/1) ... [2024-01-31 17:05:43,262 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 05:05:43" (1/1) ... [2024-01-31 17:05:43,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:05:43,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:05:43,265 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:05:43,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:05:43,265 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 05:05:43" (1/1) ... [2024-01-31 17:05:43,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:05:43,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:05:43,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:05:43,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:05:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:05:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:05:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:05:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:05:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:05:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:05:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:05:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 17:05:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:05:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:05:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:05:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:05:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:05:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 17:05:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:05:43,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:05:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:05:43,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:05:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:05:43,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:05:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 17:05:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 17:05:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:05:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:05:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:05:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:05:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:05:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 17:05:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:05:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:05:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 17:05:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:05:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:05:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:05:43,345 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:05:43,431 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:05:43,432 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:05:43,660 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:05:43,660 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:05:43,854 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:05:43,855 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-31 17:05:43,855 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:05:43 BoogieIcfgContainer [2024-01-31 17:05:43,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:05:43,856 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:05:43,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:05:43,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:05:43,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:05:42" (1/4) ... [2024-01-31 17:05:43,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a939ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:05:43, skipping insertion in model container [2024-01-31 17:05:43,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:05:42" (2/4) ... [2024-01-31 17:05:43,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a939ccd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:05:43, skipping insertion in model container [2024-01-31 17:05:43,860 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 05:05:43" (3/4) ... [2024-01-31 17:05:43,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a939ccd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:05:43, skipping insertion in model container [2024-01-31 17:05:43,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:05:43" (4/4) ... [2024-01-31 17:05:43,861 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2024-01-31 17:05:43,873 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:05:43,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:05:43,874 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:05:43,930 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 17:05:43,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 126 flow [2024-01-31 17:05:43,987 INFO L124 PetriNetUnfolderBase]: 4/45 cut-off events. [2024-01-31 17:05:43,987 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:05:43,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 45 events. 4/45 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 84 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-01-31 17:05:43,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 126 flow [2024-01-31 17:05:43,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 112 flow [2024-01-31 17:05:44,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:05:44,008 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;@24103858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:05:44,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 17:05:44,023 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:05:44,023 INFO L124 PetriNetUnfolderBase]: 4/43 cut-off events. [2024-01-31 17:05:44,023 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:05:44,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:44,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:44,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:05:44,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:44,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2110549717, now seen corresponding path program 1 times [2024-01-31 17:05:44,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:44,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790738636] [2024-01-31 17:05:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:44,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:05:44,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:44,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790738636] [2024-01-31 17:05:44,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790738636] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:05:44,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:05:44,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:05:44,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331731401] [2024-01-31 17:05:44,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:05:44,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:05:44,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:44,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:05:44,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:05:44,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-01-31 17:05:44,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:44,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:44,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-01-31 17:05:44,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:05:45,006 INFO L124 PetriNetUnfolderBase]: 3542/5179 cut-off events. [2024-01-31 17:05:45,006 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-01-31 17:05:45,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10271 conditions, 5179 events. 3542/5179 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 30730 event pairs, 1676 based on Foata normal form. 174/5137 useless extension candidates. Maximal degree in co-relation 9131. Up to 3161 conditions per place. [2024-01-31 17:05:45,041 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 47 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-01-31 17:05:45,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 257 flow [2024-01-31 17:05:45,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:05:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:05:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-01-31 17:05:45,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5867346938775511 [2024-01-31 17:05:45,054 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 112 flow. Second operand 4 states and 115 transitions. [2024-01-31 17:05:45,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 257 flow [2024-01-31 17:05:45,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 235 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 17:05:45,067 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 110 flow [2024-01-31 17:05:45,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-01-31 17:05:45,071 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2024-01-31 17:05:45,072 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 110 flow [2024-01-31 17:05:45,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:45,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:45,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:45,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:05:45,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:05:45,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:45,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2060181120, now seen corresponding path program 1 times [2024-01-31 17:05:45,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:45,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145908075] [2024-01-31 17:05:45,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:45,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:05:45,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:45,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145908075] [2024-01-31 17:05:45,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145908075] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:05:45,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:05:45,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:05:45,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549116629] [2024-01-31 17:05:45,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:05:45,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:05:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:45,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:05:45,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:05:45,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-01-31 17:05:45,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:45,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:45,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-01-31 17:05:45,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:05:45,745 INFO L124 PetriNetUnfolderBase]: 4551/6666 cut-off events. [2024-01-31 17:05:45,747 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2024-01-31 17:05:45,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14137 conditions, 6666 events. 4551/6666 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 39310 event pairs, 2562 based on Foata normal form. 192/6676 useless extension candidates. Maximal degree in co-relation 2151. Up to 4460 conditions per place. [2024-01-31 17:05:45,775 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 50 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-01-31 17:05:45,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 267 flow [2024-01-31 17:05:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:05:45,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:05:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-01-31 17:05:45,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-01-31 17:05:45,782 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 110 flow. Second operand 4 states and 112 transitions. [2024-01-31 17:05:45,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 267 flow [2024-01-31 17:05:45,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 261 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:05:45,788 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 120 flow [2024-01-31 17:05:45,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-01-31 17:05:45,789 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2024-01-31 17:05:45,789 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 120 flow [2024-01-31 17:05:45,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:45,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:45,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:45,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:05:45,790 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:05:45,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash 649085594, now seen corresponding path program 1 times [2024-01-31 17:05:45,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:45,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97294815] [2024-01-31 17:05:45,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:45,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:05:45,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:45,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97294815] [2024-01-31 17:05:45,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97294815] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:05:45,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:05:45,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:05:45,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638414366] [2024-01-31 17:05:45,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:05:45,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:05:45,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:45,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:05:45,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:05:45,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-01-31 17:05:45,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:45,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:45,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-01-31 17:05:45,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:05:46,469 INFO L124 PetriNetUnfolderBase]: 5176/7548 cut-off events. [2024-01-31 17:05:46,469 INFO L125 PetriNetUnfolderBase]: For 1544/1809 co-relation queries the response was YES. [2024-01-31 17:05:46,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17048 conditions, 7548 events. 5176/7548 cut-off events. For 1544/1809 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 44791 event pairs, 3063 based on Foata normal form. 517/7937 useless extension candidates. Maximal degree in co-relation 4322. Up to 5016 conditions per place. [2024-01-31 17:05:46,508 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 52 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-01-31 17:05:46,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 288 flow [2024-01-31 17:05:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:05:46,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:05:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-01-31 17:05:46,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-01-31 17:05:46,512 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 120 flow. Second operand 4 states and 112 transitions. [2024-01-31 17:05:46,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 288 flow [2024-01-31 17:05:46,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 66 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:05:46,515 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 130 flow [2024-01-31 17:05:46,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-01-31 17:05:46,517 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-01-31 17:05:46,517 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 130 flow [2024-01-31 17:05:46,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:46,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:46,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:46,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:05:46,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:05:46,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:46,518 INFO L85 PathProgramCache]: Analyzing trace with hash 625032986, now seen corresponding path program 1 times [2024-01-31 17:05:46,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:46,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861884267] [2024-01-31 17:05:46,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:46,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:05:46,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:46,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861884267] [2024-01-31 17:05:46,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861884267] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:05:46,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:05:46,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:05:46,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540032680] [2024-01-31 17:05:46,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:05:46,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:05:46,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:46,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:05:46,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:05:46,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-01-31 17:05:46,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:46,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:46,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-01-31 17:05:46,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:05:47,017 INFO L124 PetriNetUnfolderBase]: 4444/6470 cut-off events. [2024-01-31 17:05:47,017 INFO L125 PetriNetUnfolderBase]: For 1676/2144 co-relation queries the response was YES. [2024-01-31 17:05:47,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15415 conditions, 6470 events. 4444/6470 cut-off events. For 1676/2144 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 38202 event pairs, 3717 based on Foata normal form. 468/6823 useless extension candidates. Maximal degree in co-relation 4297. Up to 6001 conditions per place. [2024-01-31 17:05:47,049 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 34 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2024-01-31 17:05:47,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 204 flow [2024-01-31 17:05:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:05:47,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:05:47,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-01-31 17:05:47,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578231292517006 [2024-01-31 17:05:47,051 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 130 flow. Second operand 3 states and 82 transitions. [2024-01-31 17:05:47,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 204 flow [2024-01-31 17:05:47,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:05:47,121 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 138 flow [2024-01-31 17:05:47,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-01-31 17:05:47,122 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2024-01-31 17:05:47,122 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 138 flow [2024-01-31 17:05:47,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:47,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:47,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:47,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:05:47,123 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:05:47,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:47,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1092804233, now seen corresponding path program 1 times [2024-01-31 17:05:47,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:47,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962776835] [2024-01-31 17:05:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:47,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:05:47,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:47,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962776835] [2024-01-31 17:05:47,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962776835] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:05:47,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033185749] [2024-01-31 17:05:47,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:47,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:05:47,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:05:47,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:05:47,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:05:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:47,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-31 17:05:47,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:05:47,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-01-31 17:05:47,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-01-31 17:05:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:05:47,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:05:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:05:48,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033185749] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:05:48,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:05:48,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 8] total 22 [2024-01-31 17:05:48,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062938208] [2024-01-31 17:05:48,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:05:48,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-31 17:05:48,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:48,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-31 17:05:48,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-01-31 17:05:48,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-01-31 17:05:48,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 138 flow. Second operand has 22 states, 22 states have (on average 17.59090909090909) internal successors, (387), 22 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:48,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:48,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-01-31 17:05:48,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:05:54,249 INFO L124 PetriNetUnfolderBase]: 55258/79582 cut-off events. [2024-01-31 17:05:54,249 INFO L125 PetriNetUnfolderBase]: For 25199/25199 co-relation queries the response was YES. [2024-01-31 17:05:54,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188132 conditions, 79582 events. 55258/79582 cut-off events. For 25199/25199 co-relation queries the response was YES. Maximal size of possible extension queue 3052. Compared 580189 event pairs, 739 based on Foata normal form. 8/79583 useless extension candidates. Maximal degree in co-relation 188118. Up to 10159 conditions per place. [2024-01-31 17:05:54,538 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 320 selfloop transitions, 53 changer transitions 368/750 dead transitions. [2024-01-31 17:05:54,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 750 transitions, 3720 flow [2024-01-31 17:05:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-01-31 17:05:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-01-31 17:05:54,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1233 transitions. [2024-01-31 17:05:54,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5991253644314869 [2024-01-31 17:05:54,541 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 138 flow. Second operand 42 states and 1233 transitions. [2024-01-31 17:05:54,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 750 transitions, 3720 flow [2024-01-31 17:05:54,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 750 transitions, 3716 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:05:54,899 INFO L231 Difference]: Finished difference. Result has 124 places, 112 transitions, 655 flow [2024-01-31 17:05:54,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=655, PETRI_PLACES=124, PETRI_TRANSITIONS=112} [2024-01-31 17:05:54,900 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 71 predicate places. [2024-01-31 17:05:54,900 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 112 transitions, 655 flow [2024-01-31 17:05:54,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.59090909090909) internal successors, (387), 22 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:54,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:54,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:54,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 17:05:55,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:05:55,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:05:55,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:55,113 INFO L85 PathProgramCache]: Analyzing trace with hash 171510171, now seen corresponding path program 2 times [2024-01-31 17:05:55,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:55,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879792743] [2024-01-31 17:05:55,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:55,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 17:05:55,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:55,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879792743] [2024-01-31 17:05:55,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879792743] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:05:55,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:05:55,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:05:55,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186767256] [2024-01-31 17:05:55,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:05:55,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:05:55,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:55,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:05:55,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:05:55,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-01-31 17:05:55,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 112 transitions, 655 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:55,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:55,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-01-31 17:05:55,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:06:01,437 INFO L124 PetriNetUnfolderBase]: 44377/65349 cut-off events. [2024-01-31 17:06:01,438 INFO L125 PetriNetUnfolderBase]: For 756488/758414 co-relation queries the response was YES. [2024-01-31 17:06:01,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287993 conditions, 65349 events. 44377/65349 cut-off events. For 756488/758414 co-relation queries the response was YES. Maximal size of possible extension queue 2549. Compared 489617 event pairs, 8921 based on Foata normal form. 960/65963 useless extension candidates. Maximal degree in co-relation 287942. Up to 31933 conditions per place. [2024-01-31 17:06:01,841 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 99 selfloop transitions, 4 changer transitions 120/241 dead transitions. [2024-01-31 17:06:01,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 241 transitions, 1835 flow [2024-01-31 17:06:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:06:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:06:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-01-31 17:06:01,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-01-31 17:06:01,842 INFO L175 Difference]: Start difference. First operand has 124 places, 112 transitions, 655 flow. Second operand 5 states and 155 transitions. [2024-01-31 17:06:01,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 241 transitions, 1835 flow [2024-01-31 17:06:07,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 241 transitions, 1740 flow, removed 46 selfloop flow, removed 15 redundant places. [2024-01-31 17:06:07,211 INFO L231 Difference]: Finished difference. Result has 96 places, 79 transitions, 430 flow [2024-01-31 17:06:07,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2024-01-31 17:06:07,212 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2024-01-31 17:06:07,212 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 430 flow [2024-01-31 17:06:07,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:06:07,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:06:07,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:06:07,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:06:07,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:06:07,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:06:07,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1757269001, now seen corresponding path program 3 times [2024-01-31 17:06:07,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:06:07,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395688936] [2024-01-31 17:06:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:06:07,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:06:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:06:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:06:07,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:06:07,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395688936] [2024-01-31 17:06:07,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395688936] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:06:07,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200331662] [2024-01-31 17:06:07,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:06:07,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:06:07,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:06:07,443 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:06:07,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 17:06:07,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-31 17:06:07,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:06:07,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 18 conjunts are in the unsatisfiable core [2024-01-31 17:06:07,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:06:07,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-01-31 17:06:07,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2024-01-31 17:06:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:06:07,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:06:07,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:06:07,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200331662] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:06:07,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:06:07,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 19 [2024-01-31 17:06:07,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184681173] [2024-01-31 17:06:07,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:06:07,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-31 17:06:07,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:06:07,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-31 17:06:07,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-01-31 17:06:07,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-01-31 17:06:07,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 430 flow. Second operand has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:06:07,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:06:07,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-01-31 17:06:07,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:06:24,668 INFO L124 PetriNetUnfolderBase]: 126678/183088 cut-off events. [2024-01-31 17:06:24,668 INFO L125 PetriNetUnfolderBase]: For 1098838/1099820 co-relation queries the response was YES. [2024-01-31 17:06:25,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716102 conditions, 183088 events. 126678/183088 cut-off events. For 1098838/1099820 co-relation queries the response was YES. Maximal size of possible extension queue 7120. Compared 1486727 event pairs, 9962 based on Foata normal form. 892/183446 useless extension candidates. Maximal degree in co-relation 716062. Up to 28023 conditions per place. [2024-01-31 17:06:25,525 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 429 selfloop transitions, 158 changer transitions 553/1153 dead transitions. [2024-01-31 17:06:25,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 1153 transitions, 9763 flow [2024-01-31 17:06:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-01-31 17:06:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-01-31 17:06:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 1706 transitions. [2024-01-31 17:06:25,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526401036605119 [2024-01-31 17:06:25,530 INFO L175 Difference]: Start difference. First operand has 96 places, 79 transitions, 430 flow. Second operand 63 states and 1706 transitions. [2024-01-31 17:06:25,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 1153 transitions, 9763 flow [2024-01-31 17:06:36,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 1153 transitions, 8253 flow, removed 754 selfloop flow, removed 7 redundant places. [2024-01-31 17:06:36,126 INFO L231 Difference]: Finished difference. Result has 191 places, 250 transitions, 2276 flow [2024-01-31 17:06:36,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=2276, PETRI_PLACES=191, PETRI_TRANSITIONS=250} [2024-01-31 17:06:36,126 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 138 predicate places. [2024-01-31 17:06:36,127 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 250 transitions, 2276 flow [2024-01-31 17:06:36,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:06:36,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:06:36,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:06:36,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-01-31 17:06:36,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-01-31 17:06:36,338 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:06:36,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:06:36,338 INFO L85 PathProgramCache]: Analyzing trace with hash 929477939, now seen corresponding path program 4 times [2024-01-31 17:06:36,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:06:36,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156824514] [2024-01-31 17:06:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:06:36,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:06:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:06:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 17:06:36,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:06:36,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156824514] [2024-01-31 17:06:36,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156824514] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:06:36,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:06:36,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:06:36,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142474845] [2024-01-31 17:06:36,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:06:36,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:06:36,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:06:36,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:06:36,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:06:36,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-01-31 17:06:36,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 250 transitions, 2276 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:06:36,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:06:36,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-01-31 17:06:36,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand