./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/bigshot_s2.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/bigshot_s2.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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/pthread/bigshot_s2.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/bigshot_s2.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-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 18:59:24,979 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 18:59:25,068 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 18:59:25,071 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 18:59:25,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 18:59:25,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 18:59:25,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 18:59:25,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 18:59:25,090 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 18:59:25,091 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 18:59:25,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 18:59:25,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 18:59:25,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 18:59:25,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 18:59:25,092 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 18:59:25,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 18:59:25,093 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 18:59:25,093 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 18:59:25,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 18:59:25,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 18:59:25,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 18:59:25,108 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 18:59:25,109 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 18:59:25,109 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 18:59:25,109 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 18:59:25,110 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 18:59:25,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 18:59:25,110 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 18:59:25,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 18:59:25,111 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 18:59:25,111 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 18:59:25,111 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 18:59:25,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 18:59:25,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 18:59:25,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 18:59:25,112 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 18:59:25,112 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 18:59:25,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 18:59:25,113 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 18:59:25,113 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 18:59:25,113 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 18:59:25,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 18:59:25,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 18:59:25,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 18:59:25,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 18:59:25,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 18:59:25,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 18:59:25,404 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 18:59:25,405 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 18:59:25,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s2.i [2024-02-07 18:59:26,841 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 18:59:27,243 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 18:59:27,243 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i [2024-02-07 18:59:27,303 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76334425/5903e6207c874f709c1ec0ded865e25e/FLAG76c3cfcee [2024-02-07 18:59:27,337 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76334425/5903e6207c874f709c1ec0ded865e25e [2024-02-07 18:59:27,339 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 18:59:27,340 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 18:59:27,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/bigshot_s2.yml/witness.yml [2024-02-07 18:59:27,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 18:59:27,465 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 18:59:27,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 18:59:27,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 18:59:27,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 18:59:27,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:59:27" (1/2) ... [2024-02-07 18:59:27,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b859b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:27, skipping insertion in model container [2024-02-07 18:59:27,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:59:27" (1/2) ... [2024-02-07 18:59:27,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@295eb500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:27, skipping insertion in model container [2024-02-07 18:59:27,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 06:59:27" (2/2) ... [2024-02-07 18:59:27,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b859b0f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:27, skipping insertion in model container [2024-02-07 18:59:27,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 06:59:27" (2/2) ... [2024-02-07 18:59:27,475 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 18:59:27,531 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 18:59:27,533 INFO L76 edCorrectnessWitness]: Location invariant before [L1107-L1107] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 18:59:27,574 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 18:59:28,008 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2024-02-07 18:59:28,029 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 18:59:28,042 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 18:59:28,116 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2024-02-07 18:59:28,128 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 18:59:28,194 INFO L211 MainTranslator]: Completed translation [2024-02-07 18:59:28,195 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:28 WrapperNode [2024-02-07 18:59:28,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 18:59:28,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 18:59:28,197 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 18:59:28,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 18:59:28,202 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 07.02 06:59:28" (1/1) ... [2024-02-07 18:59:28,227 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 07.02 06:59:28" (1/1) ... [2024-02-07 18:59:28,255 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-02-07 18:59:28,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 18:59:28,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 18:59:28,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 18:59:28,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 18:59:28,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:28" (1/1) ... [2024-02-07 18:59:28,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:28" (1/1) ... [2024-02-07 18:59:28,276 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:28" (1/1) ... [2024-02-07 18:59:28,297 INFO L175 MemorySlicer]: Split 17 memory accesses to 5 slices as follows [2, 2, 9, 2, 2]. 53 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 0, 8, 0, 0]. The 3 writes are split as follows [0, 1, 0, 1, 1]. [2024-02-07 18:59:28,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:28" (1/1) ... [2024-02-07 18:59:28,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:28" (1/1) ... [2024-02-07 18:59:28,315 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:28" (1/1) ... [2024-02-07 18:59:28,317 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:28" (1/1) ... [2024-02-07 18:59:28,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:28" (1/1) ... [2024-02-07 18:59:28,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:28" (1/1) ... [2024-02-07 18:59:28,328 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 18:59:28,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 18:59:28,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 18:59:28,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 18:59:28,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:28" (1/1) ... [2024-02-07 18:59:28,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 18:59:28,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 18:59:28,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 18:59:28,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 18:59:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 18:59:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 18:59:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-02-07 18:59:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-02-07 18:59:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-02-07 18:59:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-02-07 18:59:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-02-07 18:59:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 18:59:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 18:59:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 18:59:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 18:59:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 18:59:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 18:59:28,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 18:59:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 18:59:28,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 18:59:28,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 18:59:28,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 18:59:28,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 18:59:28,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 18:59:28,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 18:59:28,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 18:59:28,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 18:59:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 18:59:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 18:59:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 18:59:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 18:59:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 18:59:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 18:59:28,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 18:59:28,534 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 18:59:28,755 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 18:59:28,761 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 18:59:29,051 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 18:59:29,052 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 18:59:29,238 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 18:59:29,238 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-02-07 18:59:29,239 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 06:59:29 BoogieIcfgContainer [2024-02-07 18:59:29,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 18:59:29,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 18:59:29,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 18:59:29,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 18:59:29,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 06:59:27" (1/4) ... [2024-02-07 18:59:29,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa89f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:59:29, skipping insertion in model container [2024-02-07 18:59:29,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 06:59:27" (2/4) ... [2024-02-07 18:59:29,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa89f91 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 06:59:29, skipping insertion in model container [2024-02-07 18:59:29,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:28" (3/4) ... [2024-02-07 18:59:29,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa89f91 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 06:59:29, skipping insertion in model container [2024-02-07 18:59:29,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 06:59:29" (4/4) ... [2024-02-07 18:59:29,245 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2024-02-07 18:59:29,278 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 18:59:29,281 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-02-07 18:59:29,281 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 18:59:29,340 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 18:59:29,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 28 transitions, 70 flow [2024-02-07 18:59:29,471 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-02-07 18:59:29,472 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 18:59:29,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 4/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-02-07 18:59:29,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 28 transitions, 70 flow [2024-02-07 18:59:29,481 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 23 transitions, 58 flow [2024-02-07 18:59:29,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 18:59:29,519 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;@30d8f578, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 18:59:29,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-07 18:59:29,544 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 18:59:29,544 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-02-07 18:59:29,544 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 18:59:29,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:29,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:29,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-07 18:59:29,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:29,550 INFO L85 PathProgramCache]: Analyzing trace with hash 632521489, now seen corresponding path program 1 times [2024-02-07 18:59:29,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:29,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364173135] [2024-02-07 18:59:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:29,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:29,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:29,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364173135] [2024-02-07 18:59:29,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364173135] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:29,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 18:59:29,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 18:59:29,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891176280] [2024-02-07 18:59:29,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:29,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 18:59:29,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:29,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 18:59:29,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 18:59:29,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-02-07 18:59:29,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:29,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:29,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-02-07 18:59:29,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:29,864 INFO L124 PetriNetUnfolderBase]: 7/33 cut-off events. [2024-02-07 18:59:29,864 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 18:59:29,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 33 events. 7/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 4 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 48. Up to 23 conditions per place. [2024-02-07 18:59:29,866 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 15 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2024-02-07 18:59:29,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 88 flow [2024-02-07 18:59:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 18:59:29,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 18:59:29,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-02-07 18:59:29,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-02-07 18:59:29,878 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 58 flow. Second operand 3 states and 45 transitions. [2024-02-07 18:59:29,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 88 flow [2024-02-07 18:59:29,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 22 transitions, 80 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 18:59:29,883 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 48 flow [2024-02-07 18:59:29,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2024-02-07 18:59:29,888 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2024-02-07 18:59:29,888 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 48 flow [2024-02-07 18:59:29,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:29,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:29,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:29,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 18:59:29,889 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-07 18:59:29,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:29,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2043774181, now seen corresponding path program 1 times [2024-02-07 18:59:29,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:29,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734233693] [2024-02-07 18:59:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:29,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:30,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:30,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734233693] [2024-02-07 18:59:30,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734233693] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:30,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 18:59:30,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 18:59:30,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052115193] [2024-02-07 18:59:30,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:30,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 18:59:30,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:30,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 18:59:30,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 18:59:30,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-02-07 18:59:30,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 48 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:30,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:30,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-02-07 18:59:30,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:30,318 INFO L124 PetriNetUnfolderBase]: 11/43 cut-off events. [2024-02-07 18:59:30,318 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 18:59:30,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 43 events. 11/43 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 6 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 72. Up to 29 conditions per place. [2024-02-07 18:59:30,319 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 17 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2024-02-07 18:59:30,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 104 flow [2024-02-07 18:59:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 18:59:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 18:59:30,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-02-07 18:59:30,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-02-07 18:59:30,321 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 48 flow. Second operand 6 states and 77 transitions. [2024-02-07 18:59:30,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 104 flow [2024-02-07 18:59:30,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 18:59:30,322 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 71 flow [2024-02-07 18:59:30,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-02-07 18:59:30,323 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2024-02-07 18:59:30,323 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 71 flow [2024-02-07 18:59:30,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:30,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:30,324 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:30,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 18:59:30,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-07 18:59:30,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:30,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1806351764, now seen corresponding path program 1 times [2024-02-07 18:59:30,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:30,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2192689] [2024-02-07 18:59:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:30,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:30,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:30,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2192689] [2024-02-07 18:59:30,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2192689] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 18:59:30,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182464291] [2024-02-07 18:59:30,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:30,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:30,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 18:59:30,556 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 18:59:30,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 18:59:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:30,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 18:59:30,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 18:59:31,005 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 [2024-02-07 18:59:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:31,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 18:59:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:31,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182464291] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 18:59:31,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 18:59:31,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-02-07 18:59:31,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187305152] [2024-02-07 18:59:31,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 18:59:31,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-07 18:59:31,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:31,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-07 18:59:31,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-02-07 18:59:31,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-02-07 18:59:31,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 71 flow. Second operand has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 14 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:31,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:31,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-02-07 18:59:31,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:31,346 INFO L124 PetriNetUnfolderBase]: 13/49 cut-off events. [2024-02-07 18:59:31,346 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-07 18:59:31,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 49 events. 13/49 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 6 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 104. Up to 29 conditions per place. [2024-02-07 18:59:31,347 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 19 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2024-02-07 18:59:31,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 137 flow [2024-02-07 18:59:31,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 18:59:31,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 18:59:31,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-02-07 18:59:31,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45408163265306123 [2024-02-07 18:59:31,352 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 71 flow. Second operand 7 states and 89 transitions. [2024-02-07 18:59:31,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 137 flow [2024-02-07 18:59:31,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 18:59:31,353 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 100 flow [2024-02-07 18:59:31,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2024-02-07 18:59:31,354 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2024-02-07 18:59:31,354 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 100 flow [2024-02-07 18:59:31,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 14 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:31,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:31,355 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:31,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 18:59:31,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:31,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-07 18:59:31,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:31,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1709814441, now seen corresponding path program 2 times [2024-02-07 18:59:31,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:31,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66564630] [2024-02-07 18:59:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:31,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:32,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:32,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66564630] [2024-02-07 18:59:32,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66564630] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 18:59:32,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894671391] [2024-02-07 18:59:32,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 18:59:32,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:32,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 18:59:32,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 18:59:32,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 18:59:32,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-07 18:59:32,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 18:59:32,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 18:59:32,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 18:59:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-07 18:59:32,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 18:59:32,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894671391] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:32,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-07 18:59:32,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-02-07 18:59:32,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181941048] [2024-02-07 18:59:32,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:32,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 18:59:32,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:32,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 18:59:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-02-07 18:59:32,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-02-07 18:59:32,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:32,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:32,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-02-07 18:59:32,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:32,317 INFO L124 PetriNetUnfolderBase]: 12/47 cut-off events. [2024-02-07 18:59:32,319 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-02-07 18:59:32,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 47 events. 12/47 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 10 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 121. Up to 41 conditions per place. [2024-02-07 18:59:32,321 INFO L140 encePairwiseOnDemand]: 26/28 looper letters, 21 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2024-02-07 18:59:32,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 25 transitions, 142 flow [2024-02-07 18:59:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 18:59:32,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 18:59:32,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2024-02-07 18:59:32,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-02-07 18:59:32,323 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 100 flow. Second operand 3 states and 39 transitions. [2024-02-07 18:59:32,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 25 transitions, 142 flow [2024-02-07 18:59:32,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 25 transitions, 130 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-07 18:59:32,326 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 88 flow [2024-02-07 18:59:32,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=3, PETRI_FLOW=88, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2024-02-07 18:59:32,329 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2024-02-07 18:59:32,330 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 88 flow [2024-02-07 18:59:32,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:32,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:32,334 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:32,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-07 18:59:32,547 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,SelfDestructingSolverStorable3 [2024-02-07 18:59:32,548 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-07 18:59:32,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:32,548 INFO L85 PathProgramCache]: Analyzing trace with hash -169914107, now seen corresponding path program 1 times [2024-02-07 18:59:32,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:32,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185501807] [2024-02-07 18:59:32,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:32,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:32,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:32,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185501807] [2024-02-07 18:59:32,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185501807] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 18:59:32,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536167426] [2024-02-07 18:59:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:32,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:32,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 18:59:32,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 18:59:32,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-07 18:59:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:33,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-07 18:59:33,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 18:59:33,172 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 [2024-02-07 18:59:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:33,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 18:59:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:33,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536167426] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 18:59:33,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 18:59:33,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-02-07 18:59:33,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994168198] [2024-02-07 18:59:33,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 18:59:33,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-07 18:59:33,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:33,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-07 18:59:33,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-02-07 18:59:33,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-02-07 18:59:33,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 88 flow. Second operand has 17 states, 17 states have (on average 11.882352941176471) internal successors, (202), 17 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:33,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:33,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-02-07 18:59:33,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:33,565 INFO L124 PetriNetUnfolderBase]: 15/54 cut-off events. [2024-02-07 18:59:33,565 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-02-07 18:59:33,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 54 events. 15/54 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 6 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 142. Up to 29 conditions per place. [2024-02-07 18:59:33,566 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 21 selfloop transitions, 7 changer transitions 0/32 dead transitions. [2024-02-07 18:59:33,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 166 flow [2024-02-07 18:59:33,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 18:59:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 18:59:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-02-07 18:59:33,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45089285714285715 [2024-02-07 18:59:33,572 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 88 flow. Second operand 8 states and 101 transitions. [2024-02-07 18:59:33,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 166 flow [2024-02-07 18:59:33,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 18:59:33,574 INFO L231 Difference]: Finished difference. Result has 42 places, 27 transitions, 123 flow [2024-02-07 18:59:33,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=123, PETRI_PLACES=42, PETRI_TRANSITIONS=27} [2024-02-07 18:59:33,575 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2024-02-07 18:59:33,576 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 27 transitions, 123 flow [2024-02-07 18:59:33,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.882352941176471) internal successors, (202), 17 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:33,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:33,577 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:33,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-07 18:59:33,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:33,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-07 18:59:33,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:33,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1484809120, now seen corresponding path program 2 times [2024-02-07 18:59:33,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:33,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817990023] [2024-02-07 18:59:33,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:33,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:34,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:34,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817990023] [2024-02-07 18:59:34,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817990023] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 18:59:34,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108318822] [2024-02-07 18:59:34,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 18:59:34,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:34,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 18:59:34,128 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 18:59:34,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-07 18:59:34,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 18:59:34,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 18:59:34,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-07 18:59:34,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 18:59:34,461 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 [2024-02-07 18:59:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:34,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 18:59:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:34,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108318822] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 18:59:34,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 18:59:34,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-02-07 18:59:34,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318320593] [2024-02-07 18:59:34,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 18:59:34,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-07 18:59:34,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:34,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-07 18:59:34,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-02-07 18:59:34,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-02-07 18:59:34,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 27 transitions, 123 flow. Second operand has 20 states, 20 states have (on average 11.75) internal successors, (235), 20 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:34,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:34,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-02-07 18:59:34,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:34,843 INFO L124 PetriNetUnfolderBase]: 17/60 cut-off events. [2024-02-07 18:59:34,843 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-02-07 18:59:34,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 60 events. 17/60 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 6 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 180. Up to 29 conditions per place. [2024-02-07 18:59:34,844 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 23 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2024-02-07 18:59:34,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 213 flow [2024-02-07 18:59:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 18:59:34,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 18:59:34,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-02-07 18:59:34,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841269841269843 [2024-02-07 18:59:34,861 INFO L175 Difference]: Start difference. First operand has 42 places, 27 transitions, 123 flow. Second operand 9 states and 113 transitions. [2024-02-07 18:59:34,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 213 flow [2024-02-07 18:59:34,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 35 transitions, 195 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-02-07 18:59:34,864 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 147 flow [2024-02-07 18:59:34,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=147, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2024-02-07 18:59:34,865 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2024-02-07 18:59:34,865 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 147 flow [2024-02-07 18:59:34,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.75) internal successors, (235), 20 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:34,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:34,865 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:34,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-07 18:59:35,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:35,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-07 18:59:35,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:35,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1323051741, now seen corresponding path program 3 times [2024-02-07 18:59:35,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:35,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562775699] [2024-02-07 18:59:35,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:35,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:35,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:35,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562775699] [2024-02-07 18:59:35,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562775699] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 18:59:35,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757901904] [2024-02-07 18:59:35,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-07 18:59:35,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:35,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 18:59:35,453 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 18:59:35,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-07 18:59:35,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-02-07 18:59:35,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 18:59:35,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-07 18:59:35,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 18:59:35,793 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 [2024-02-07 18:59:35,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:35,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 18:59:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:35,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757901904] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 18:59:35,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 18:59:35,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-02-07 18:59:35,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757733219] [2024-02-07 18:59:35,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 18:59:35,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-07 18:59:35,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:35,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-07 18:59:35,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2024-02-07 18:59:35,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-02-07 18:59:35,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 147 flow. Second operand has 23 states, 23 states have (on average 11.652173913043478) internal successors, (268), 23 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:35,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:35,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-02-07 18:59:35,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:36,218 INFO L124 PetriNetUnfolderBase]: 19/66 cut-off events. [2024-02-07 18:59:36,218 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-02-07 18:59:36,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 66 events. 19/66 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 6 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 216. Up to 29 conditions per place. [2024-02-07 18:59:36,219 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 25 selfloop transitions, 9 changer transitions 0/38 dead transitions. [2024-02-07 18:59:36,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 38 transitions, 249 flow [2024-02-07 18:59:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 18:59:36,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 18:59:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-02-07 18:59:36,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-02-07 18:59:36,221 INFO L175 Difference]: Start difference. First operand has 47 places, 29 transitions, 147 flow. Second operand 10 states and 125 transitions. [2024-02-07 18:59:36,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 38 transitions, 249 flow [2024-02-07 18:59:36,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 38 transitions, 225 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-07 18:59:36,223 INFO L231 Difference]: Finished difference. Result has 52 places, 31 transitions, 171 flow [2024-02-07 18:59:36,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=171, PETRI_PLACES=52, PETRI_TRANSITIONS=31} [2024-02-07 18:59:36,224 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2024-02-07 18:59:36,224 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 31 transitions, 171 flow [2024-02-07 18:59:36,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.652173913043478) internal successors, (268), 23 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:36,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:36,225 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:36,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-07 18:59:36,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:36,435 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-07 18:59:36,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:36,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1857090022, now seen corresponding path program 4 times [2024-02-07 18:59:36,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:36,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979322142] [2024-02-07 18:59:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:36,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:36,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:36,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979322142] [2024-02-07 18:59:36,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979322142] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 18:59:36,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992329287] [2024-02-07 18:59:36,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-07 18:59:36,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:36,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 18:59:36,929 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 18:59:36,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-07 18:59:37,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-07 18:59:37,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 18:59:37,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-07 18:59:37,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 18:59:37,385 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 [2024-02-07 18:59:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:37,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 18:59:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:37,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992329287] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 18:59:37,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 18:59:37,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-02-07 18:59:37,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95493446] [2024-02-07 18:59:37,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 18:59:37,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-07 18:59:37,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:37,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-07 18:59:37,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-02-07 18:59:37,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-02-07 18:59:37,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 31 transitions, 171 flow. Second operand has 26 states, 26 states have (on average 11.576923076923077) internal successors, (301), 26 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:37,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:37,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-02-07 18:59:37,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:38,145 INFO L124 PetriNetUnfolderBase]: 21/72 cut-off events. [2024-02-07 18:59:38,145 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2024-02-07 18:59:38,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 72 events. 21/72 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 6 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 252. Up to 29 conditions per place. [2024-02-07 18:59:38,146 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 27 selfloop transitions, 10 changer transitions 0/41 dead transitions. [2024-02-07 18:59:38,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 41 transitions, 285 flow [2024-02-07 18:59:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-07 18:59:38,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-07 18:59:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-02-07 18:59:38,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-02-07 18:59:38,148 INFO L175 Difference]: Start difference. First operand has 52 places, 31 transitions, 171 flow. Second operand 11 states and 137 transitions. [2024-02-07 18:59:38,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 41 transitions, 285 flow [2024-02-07 18:59:38,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 41 transitions, 255 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-02-07 18:59:38,153 INFO L231 Difference]: Finished difference. Result has 57 places, 33 transitions, 195 flow [2024-02-07 18:59:38,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=195, PETRI_PLACES=57, PETRI_TRANSITIONS=33} [2024-02-07 18:59:38,155 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2024-02-07 18:59:38,155 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 33 transitions, 195 flow [2024-02-07 18:59:38,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.576923076923077) internal successors, (301), 26 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:38,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:38,156 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:38,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-02-07 18:59:38,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:38,373 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-07 18:59:38,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:38,374 INFO L85 PathProgramCache]: Analyzing trace with hash -43390487, now seen corresponding path program 5 times [2024-02-07 18:59:38,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:38,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293008982] [2024-02-07 18:59:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:38,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:38,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:38,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293008982] [2024-02-07 18:59:38,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293008982] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 18:59:38,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235535592] [2024-02-07 18:59:38,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-07 18:59:38,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:38,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 18:59:38,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 18:59:38,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-07 18:59:39,004 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-02-07 18:59:39,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 18:59:39,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjunts are in the unsatisfiable core [2024-02-07 18:59:39,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 18:59:39,335 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 [2024-02-07 18:59:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:39,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 18:59:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:39,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235535592] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 18:59:39,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 18:59:39,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2024-02-07 18:59:39,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791987774] [2024-02-07 18:59:39,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 18:59:39,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-02-07 18:59:39,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:39,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-02-07 18:59:39,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2024-02-07 18:59:39,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-02-07 18:59:39,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 33 transitions, 195 flow. Second operand has 29 states, 29 states have (on average 11.517241379310345) internal successors, (334), 29 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:39,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:39,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-02-07 18:59:39,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:40,101 INFO L124 PetriNetUnfolderBase]: 23/78 cut-off events. [2024-02-07 18:59:40,103 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-02-07 18:59:40,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 78 events. 23/78 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 6 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 288. Up to 29 conditions per place. [2024-02-07 18:59:40,106 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 29 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2024-02-07 18:59:40,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 44 transitions, 321 flow [2024-02-07 18:59:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 18:59:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 18:59:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-02-07 18:59:40,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-02-07 18:59:40,109 INFO L175 Difference]: Start difference. First operand has 57 places, 33 transitions, 195 flow. Second operand 12 states and 149 transitions. [2024-02-07 18:59:40,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 44 transitions, 321 flow [2024-02-07 18:59:40,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 44 transitions, 285 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-02-07 18:59:40,114 INFO L231 Difference]: Finished difference. Result has 62 places, 35 transitions, 219 flow [2024-02-07 18:59:40,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=219, PETRI_PLACES=62, PETRI_TRANSITIONS=35} [2024-02-07 18:59:40,116 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 35 predicate places. [2024-02-07 18:59:40,116 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 35 transitions, 219 flow [2024-02-07 18:59:40,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.517241379310345) internal successors, (334), 29 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:40,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:40,117 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:40,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-07 18:59:40,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:40,334 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-07 18:59:40,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1044058836, now seen corresponding path program 6 times [2024-02-07 18:59:40,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:40,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119175326] [2024-02-07 18:59:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:40,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 20 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:41,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:41,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119175326] [2024-02-07 18:59:41,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119175326] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 18:59:41,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283962049] [2024-02-07 18:59:41,575 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-07 18:59:41,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 18:59:41,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 18:59:41,577 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 18:59:41,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-07 18:59:41,743 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-02-07 18:59:41,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 18:59:41,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 51 conjunts are in the unsatisfiable core [2024-02-07 18:59:41,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 18:59:41,823 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 11 treesize of output 7 [2024-02-07 18:59:41,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-07 18:59:41,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-02-07 18:59:41,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-07 18:59:41,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-02-07 18:59:41,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-07 18:59:41,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-02-07 18:59:42,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-07 18:59:42,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-02-07 18:59:42,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-07 18:59:42,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-02-07 18:59:42,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-07 18:59:42,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-02-07 18:59:42,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-07 18:59:42,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-02-07 18:59:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 36 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:42,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:01:26,812 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 1)) (forall ((v_ArrVal_345 Int) (v_ArrVal_344 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| Int) (v_ArrVal_349 Int) (v_ArrVal_347 Int)) (or (= 66 (select (select (store |c_#memory_int#4| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (select |c_#memory_int#4| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_344) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_345) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_347) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_349)) c_~v~0.base) c_~v~0.offset)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| 1)))))) is different from false [2024-02-07 19:02:15,754 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 1)) (forall ((v_ArrVal_345 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| Int) (v_ArrVal_344 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| Int) (v_ArrVal_342 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| Int) (v_ArrVal_349 Int) (v_ArrVal_347 Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| 1)) (= (select (select (store |c_#memory_int#4| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (store (select |c_#memory_int#4| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_342) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_344) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_345) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_347) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_349)) c_~v~0.base) c_~v~0.offset) 66) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| 1)))))) is different from false [2024-02-07 19:03:11,458 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_86| Int)) (or (forall ((|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| Int) (v_ArrVal_345 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| Int) (v_ArrVal_344 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| Int) (v_ArrVal_342 Int) (v_ArrVal_339 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| Int) (v_ArrVal_349 Int) (v_ArrVal_347 Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| 1)) (= (select (select (store |c_#memory_int#4| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (store (store (select |c_#memory_int#4| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_86| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_339) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_342) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_344) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_345) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_347) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_349)) c_~v~0.base) c_~v~0.offset) 66) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_86| 1)))) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_86| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 1)))) is different from false [2024-02-07 19:04:17,061 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_87| Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_87| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 1)) (forall ((|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_86| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| Int) (v_ArrVal_339 Int) (v_ArrVal_349 Int) (v_ArrVal_337 Int) (v_ArrVal_347 Int) (v_ArrVal_345 Int) (v_ArrVal_344 Int) (v_ArrVal_342 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_86| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_87| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| 1)) (= 66 (select (select (store |c_#memory_int#4| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (store (store (store (select |c_#memory_int#4| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_87| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_337) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_86| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_339) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_342) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_84| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_344) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_83| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_345) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_82| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_347) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_81| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_349)) c_~v~0.base) c_~v~0.offset)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_85| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_86| 1)))))) is different from false [2024-02-07 19:04:17,191 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 52510698 treesize of output 52477930 [2024-02-07 19:04:46,559 WARN L293 SmtUtils]: Spent 29.35s on a formula simplification. DAG size of input: 5633 DAG size of output: 402 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-02-07 19:05:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 16 refuted. 10 times theorem prover too weak. 0 trivial. 22 not checked. [2024-02-07 19:05:07,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283962049] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:05:07,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:05:07,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 20] total 42 [2024-02-07 19:05:07,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285334644] [2024-02-07 19:05:07,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:05:07,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-02-07 19:05:07,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:05:07,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-02-07 19:05:07,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1109, Unknown=63, NotChecked=308, Total=1806 [2024-02-07 19:05:07,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-02-07 19:05:07,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 35 transitions, 219 flow. Second operand has 43 states, 43 states have (on average 6.813953488372093) internal successors, (293), 43 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:05:07,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:05:07,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-02-07 19:05:07,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:05:09,775 INFO L124 PetriNetUnfolderBase]: 22/75 cut-off events. [2024-02-07 19:05:09,775 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-02-07 19:05:09,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 75 events. 22/75 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 1 based on Foata normal form. 1/76 useless extension candidates. Maximal degree in co-relation 279. Up to 20 conditions per place. [2024-02-07 19:05:09,778 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-02-07 19:05:09,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 43 transitions, 317 flow [2024-02-07 19:05:09,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-07 19:05:09,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-07 19:05:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 111 transitions. [2024-02-07 19:05:09,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28316326530612246 [2024-02-07 19:05:09,781 INFO L175 Difference]: Start difference. First operand has 62 places, 35 transitions, 219 flow. Second operand 14 states and 111 transitions. [2024-02-07 19:05:09,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 43 transitions, 317 flow [2024-02-07 19:05:09,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 43 transitions, 275 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-02-07 19:05:09,782 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2024-02-07 19:05:09,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2024-02-07 19:05:09,787 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 37 predicate places. [2024-02-07 19:05:09,787 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2024-02-07 19:05:09,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.813953488372093) internal successors, (293), 43 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:05:09,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-02-07 19:05:09,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-02-07 19:05:09,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-02-07 19:05:09,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-02-07 19:05:09,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-07 19:05:10,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-02-07 19:05:10,005 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1] [2024-02-07 19:05:10,009 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 19:05:10,009 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 19:05:10,011 INFO L503 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-02-07 19:05:10,012 INFO L504 ceAbstractionStarter]: WitnessConsidered=1 [2024-02-07 19:05:10,012 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 07:05:10 BasicIcfg [2024-02-07 19:05:10,012 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 19:05:10,013 INFO L158 Benchmark]: Toolchain (without parser) took 342547.91ms. Allocated memory was 174.1MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 95.3MB in the beginning and 721.1MB in the end (delta: -625.8MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-02-07 19:05:10,013 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 174.1MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:05:10,013 INFO L158 Benchmark]: Witness Parser took 0.47ms. Allocated memory is still 174.1MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:05:10,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 728.95ms. Allocated memory is still 174.1MB. Free memory was 95.1MB in the beginning and 109.6MB in the end (delta: -14.6MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2024-02-07 19:05:10,014 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.79ms. Allocated memory is still 174.1MB. Free memory was 109.6MB in the beginning and 107.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:05:10,014 INFO L158 Benchmark]: Boogie Preprocessor took 73.54ms. Allocated memory is still 174.1MB. Free memory was 107.1MB in the beginning and 104.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 19:05:10,014 INFO L158 Benchmark]: RCFGBuilder took 908.80ms. Allocated memory is still 174.1MB. Free memory was 104.1MB in the beginning and 120.0MB in the end (delta: -15.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-02-07 19:05:10,014 INFO L158 Benchmark]: TraceAbstraction took 340772.35ms. Allocated memory was 174.1MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 119.4MB in the beginning and 721.1MB in the end (delta: -601.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-02-07 19:05:10,015 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 174.1MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.47ms. Allocated memory is still 174.1MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 728.95ms. Allocated memory is still 174.1MB. Free memory was 95.1MB in the beginning and 109.6MB in the end (delta: -14.6MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.79ms. Allocated memory is still 174.1MB. Free memory was 109.6MB in the beginning and 107.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.54ms. Allocated memory is still 174.1MB. Free memory was 107.1MB in the beginning and 104.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 908.80ms. Allocated memory is still 174.1MB. Free memory was 104.1MB in the beginning and 120.0MB in the end (delta: -15.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 340772.35ms. Allocated memory was 174.1MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 119.4MB in the beginning and 721.1MB in the end (delta: -601.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1107]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1107]: 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 5 procedures, 36 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: 340.6s, OverallIterations: 10, TraceHistogramMax: 8, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 325 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 314 mSDsluCounter, 393 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 143 IncrementalHoareTripleChecker+Unchecked, 379 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2347 IncrementalHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 14 mSDtfsCounter, 2347 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 518 GetRequests, 291 SyntacticMatches, 8 SemanticMatches, 219 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 278.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=9, InterpolantAutomatonStates: 83, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 332.4s InterpolantComputationTime, 447 NumberOfCodeBlocks, 443 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 609 ConstructedInterpolants, 14 QuantifiedInterpolants, 5813 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1666 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 25 InterpolantComputations, 3 PerfectInterpolantSequences, 70/516 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 19:05:10,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE