./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.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/13-privatized_24-multiple-protecting_true.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/goblint-regression/13-privatized_24-multiple-protecting_true.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/13-privatized_24-multiple-protecting_true.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 19:06:06,364 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:06:06,429 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:06:06,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:06:06,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:06:06,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:06:06,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:06:06,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:06:06,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:06:06,464 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:06:06,465 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:06:06,465 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:06:06,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:06:06,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:06:06,467 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:06:06,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:06:06,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:06:06,468 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:06:06,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:06:06,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:06:06,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:06:06,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:06:06,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:06:06,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:06:06,469 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:06:06,469 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:06:06,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:06:06,470 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:06:06,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:06:06,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:06:06,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:06:06,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:06:06,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:06:06,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:06:06,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:06:06,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:06:06,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:06:06,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:06:06,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:06:06,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:06:06,473 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:06:06,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:06:06,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:06:06,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:06:06,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:06:06,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:06:06,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:06:06,714 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:06:06,714 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:06:06,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2024-02-07 19:06:07,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:06:08,220 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:06:08,224 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2024-02-07 19:06:08,248 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca10158ae/5e1905ee45824e058cc46da73a4a886f/FLAG2a041cc7f [2024-02-07 19:06:08,266 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca10158ae/5e1905ee45824e058cc46da73a4a886f [2024-02-07 19:06:08,269 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:06:08,270 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:06:08,272 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/13-privatized_24-multiple-protecting_true.yml/witness.yml [2024-02-07 19:06:08,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:06:08,371 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:06:08,372 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:06:08,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:06:08,377 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:06:08,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:06:08" (1/2) ... [2024-02-07 19:06:08,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c388411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:08, skipping insertion in model container [2024-02-07 19:06:08,379 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:06:08" (1/2) ... [2024-02-07 19:06:08,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35f9a2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:08, skipping insertion in model container [2024-02-07 19:06:08,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:06:08" (2/2) ... [2024-02-07 19:06:08,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c388411 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:06:08, skipping insertion in model container [2024-02-07 19:06:08,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:06:08" (2/2) ... [2024-02-07 19:06:08,383 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:06:08,420 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:06:08,422 INFO L76 edCorrectnessWitness]: Location invariant before [L699-L699] g2 == 1 [2024-02-07 19:06:08,422 INFO L76 edCorrectnessWitness]: Location invariant before [L716-L716] g2 == 0 [2024-02-07 19:06:08,422 INFO L76 edCorrectnessWitness]: Location invariant before [L700-L700] g2 == 0 [2024-02-07 19:06:08,422 INFO L76 edCorrectnessWitness]: Location invariant before [L688-L688] g1 == 0 [2024-02-07 19:06:08,423 INFO L76 edCorrectnessWitness]: Location invariant before [L713-L713] g1 == 0 [2024-02-07 19:06:08,423 INFO L76 edCorrectnessWitness]: Location invariant before [L689-L689] g1 == 1 [2024-02-07 19:06:08,424 INFO L76 edCorrectnessWitness]: Location invariant before [L697-L697] g2 == 1 [2024-02-07 19:06:08,424 INFO L76 edCorrectnessWitness]: Location invariant before [L720-L720] g1 == 0 [2024-02-07 19:06:08,424 INFO L76 edCorrectnessWitness]: Location invariant before [L691-L691] g1 == 1 [2024-02-07 19:06:08,424 INFO L76 edCorrectnessWitness]: Location invariant before [L692-L692] g1 == 0 [2024-02-07 19:06:08,424 INFO L76 edCorrectnessWitness]: Location invariant before [L696-L696] g2 == 0 [2024-02-07 19:06:08,425 INFO L76 edCorrectnessWitness]: Location invariant before [L709-L709] g1 == 0 [2024-02-07 19:06:08,470 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:06:08,646 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2024-02-07 19:06:08,778 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:06:08,805 INFO L206 MainTranslator]: Completed pre-run [2024-02-07 19:06:08,824 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:06:08,899 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:06:08,937 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:06:08,938 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:06:08 WrapperNode [2024-02-07 19:06:08,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:06:08,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:06:08,940 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:06:08,940 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:06:08,947 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 07:06:08" (1/1) ... [2024-02-07 19:06:08,975 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 07:06:08" (1/1) ... [2024-02-07 19:06:09,018 INFO L138 Inliner]: procedures = 163, calls = 58, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 111 [2024-02-07 19:06:09,019 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:06:09,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:06:09,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:06:09,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:06:09,031 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 07:06:08" (1/1) ... [2024-02-07 19:06:09,031 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 07:06:08" (1/1) ... [2024-02-07 19:06:09,038 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 07:06:08" (1/1) ... [2024-02-07 19:06:09,058 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-02-07 19:06:09,062 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 07:06:08" (1/1) ... [2024-02-07 19:06:09,062 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 07:06:08" (1/1) ... [2024-02-07 19:06:09,076 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 07:06:08" (1/1) ... [2024-02-07 19:06:09,087 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 07:06:08" (1/1) ... [2024-02-07 19:06:09,088 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 07:06:08" (1/1) ... [2024-02-07 19:06:09,096 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 07:06:08" (1/1) ... [2024-02-07 19:06:09,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:06:09,100 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:06:09,100 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:06:09,100 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:06:09,101 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 07:06:08" (1/1) ... [2024-02-07 19:06:09,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:06:09,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:06:09,150 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 19:06:09,166 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 19:06:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:06:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:06:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:06:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:06:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 19:06:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:06:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:06:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:06:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:06:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:06:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:06:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:06:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:06:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 19:06:09,190 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 19:06:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:06:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:06:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:06:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:06:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:06:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:06:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:06:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:06:09,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:06:09,193 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 19:06:09,366 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:06:09,368 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:06:09,611 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:06:09,612 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:06:09,801 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:06:09,802 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 19:06:09,802 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:06:09 BoogieIcfgContainer [2024-02-07 19:06:09,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:06:09,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:06:09,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:06:09,807 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:06:09,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:06:08" (1/4) ... [2024-02-07 19:06:09,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77988b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:06:09, skipping insertion in model container [2024-02-07 19:06:09,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:06:08" (2/4) ... [2024-02-07 19:06:09,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77988b4d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:06:09, skipping insertion in model container [2024-02-07 19:06:09,809 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 07:06:08" (3/4) ... [2024-02-07 19:06:09,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77988b4d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:06:09, skipping insertion in model container [2024-02-07 19:06:09,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:06:09" (4/4) ... [2024-02-07 19:06:09,810 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2024-02-07 19:06:09,829 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:06:09,829 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-02-07 19:06:09,829 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:06:09,868 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 19:06:09,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 205 flow [2024-02-07 19:06:09,936 INFO L124 PetriNetUnfolderBase]: 4/98 cut-off events. [2024-02-07 19:06:09,936 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:06:09,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 98 events. 4/98 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 142 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2024-02-07 19:06:09,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 99 transitions, 205 flow [2024-02-07 19:06:09,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 96 transitions, 195 flow [2024-02-07 19:06:09,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:06:09,958 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;@359284da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:06:09,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-02-07 19:06:09,963 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:06:09,963 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-02-07 19:06:09,964 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:06:09,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:09,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:09,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:06:09,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:09,970 INFO L85 PathProgramCache]: Analyzing trace with hash -246856284, now seen corresponding path program 1 times [2024-02-07 19:06:09,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:09,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572594496] [2024-02-07 19:06:09,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:09,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:10,338 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 19:06:10,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:10,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572594496] [2024-02-07 19:06:10,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572594496] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:10,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:10,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:06:10,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689597641] [2024-02-07 19:06:10,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:10,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:06:10,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:06:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:06:10,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2024-02-07 19:06:10,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 19:06:10,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:10,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2024-02-07 19:06:10,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:10,867 INFO L124 PetriNetUnfolderBase]: 461/1654 cut-off events. [2024-02-07 19:06:10,868 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:06:10,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2708 conditions, 1654 events. 461/1654 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11490 event pairs, 339 based on Foata normal form. 133/1682 useless extension candidates. Maximal degree in co-relation 2699. Up to 860 conditions per place. [2024-02-07 19:06:10,884 INFO L140 encePairwiseOnDemand]: 83/99 looper letters, 64 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2024-02-07 19:06:10,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 114 transitions, 371 flow [2024-02-07 19:06:10,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:06:10,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:06:10,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2024-02-07 19:06:10,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-02-07 19:06:10,946 INFO L175 Difference]: Start difference. First operand has 96 places, 96 transitions, 195 flow. Second operand 3 states and 220 transitions. [2024-02-07 19:06:10,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 114 transitions, 371 flow [2024-02-07 19:06:10,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 114 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:06:10,955 INFO L231 Difference]: Finished difference. Result has 97 places, 93 transitions, 226 flow [2024-02-07 19:06:10,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=97, PETRI_TRANSITIONS=93} [2024-02-07 19:06:10,961 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 1 predicate places. [2024-02-07 19:06:10,962 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 93 transitions, 226 flow [2024-02-07 19:06:10,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 19:06:10,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:10,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:10,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:06:10,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:06:10,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:10,966 INFO L85 PathProgramCache]: Analyzing trace with hash 937390292, now seen corresponding path program 1 times [2024-02-07 19:06:10,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:10,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349140132] [2024-02-07 19:06:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:10,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:11,219 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 19:06:11,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:11,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349140132] [2024-02-07 19:06:11,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349140132] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:11,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:11,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:06:11,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748125147] [2024-02-07 19:06:11,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:11,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:06:11,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:11,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:06:11,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:06:11,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 99 [2024-02-07 19:06:11,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 93 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 19:06:11,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:11,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 99 [2024-02-07 19:06:11,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:11,502 INFO L124 PetriNetUnfolderBase]: 415/1398 cut-off events. [2024-02-07 19:06:11,503 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2024-02-07 19:06:11,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 1398 events. 415/1398 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8992 event pairs, 339 based on Foata normal form. 64/1385 useless extension candidates. Maximal degree in co-relation 2505. Up to 738 conditions per place. [2024-02-07 19:06:11,511 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 62 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2024-02-07 19:06:11,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 107 transitions, 372 flow [2024-02-07 19:06:11,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:11,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-02-07 19:06:11,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-02-07 19:06:11,514 INFO L175 Difference]: Start difference. First operand has 97 places, 93 transitions, 226 flow. Second operand 4 states and 242 transitions. [2024-02-07 19:06:11,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 107 transitions, 372 flow [2024-02-07 19:06:11,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 107 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:06:11,519 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 204 flow [2024-02-07 19:06:11,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-02-07 19:06:11,520 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 0 predicate places. [2024-02-07 19:06:11,520 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 204 flow [2024-02-07 19:06:11,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 19:06:11,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:11,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:11,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:06:11,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:06:11,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:11,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1138266756, now seen corresponding path program 1 times [2024-02-07 19:06:11,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:11,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488383885] [2024-02-07 19:06:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:11,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:11,641 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 19:06:11,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:11,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488383885] [2024-02-07 19:06:11,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488383885] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:11,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:11,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:06:11,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667985650] [2024-02-07 19:06:11,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:11,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:06:11,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:11,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:06:11,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:06:11,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 99 [2024-02-07 19:06:11,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 19:06:11,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:11,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 99 [2024-02-07 19:06:11,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:11,946 INFO L124 PetriNetUnfolderBase]: 491/1418 cut-off events. [2024-02-07 19:06:11,947 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2024-02-07 19:06:11,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2713 conditions, 1418 events. 491/1418 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8585 event pairs, 279 based on Foata normal form. 0/1384 useless extension candidates. Maximal degree in co-relation 2701. Up to 614 conditions per place. [2024-02-07 19:06:11,955 INFO L140 encePairwiseOnDemand]: 84/99 looper letters, 74 selfloop transitions, 18 changer transitions 0/122 dead transitions. [2024-02-07 19:06:11,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 122 transitions, 466 flow [2024-02-07 19:06:11,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:06:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:06:11,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 285 transitions. [2024-02-07 19:06:11,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-02-07 19:06:11,958 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 204 flow. Second operand 5 states and 285 transitions. [2024-02-07 19:06:11,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 122 transitions, 466 flow [2024-02-07 19:06:11,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 456 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:06:11,962 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 236 flow [2024-02-07 19:06:11,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2024-02-07 19:06:11,963 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -7 predicate places. [2024-02-07 19:06:11,963 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 236 flow [2024-02-07 19:06:11,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 19:06:11,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:11,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:11,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:06:11,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:06:11,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:11,965 INFO L85 PathProgramCache]: Analyzing trace with hash 161128530, now seen corresponding path program 1 times [2024-02-07 19:06:11,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:11,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668326596] [2024-02-07 19:06:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:11,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:12,084 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 19:06:12,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:12,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668326596] [2024-02-07 19:06:12,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668326596] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:12,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:12,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:06:12,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106169335] [2024-02-07 19:06:12,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:12,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:06:12,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:12,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:06:12,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:06:12,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 99 [2024-02-07 19:06:12,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 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 19:06:12,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:12,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 99 [2024-02-07 19:06:12,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:12,271 INFO L124 PetriNetUnfolderBase]: 274/910 cut-off events. [2024-02-07 19:06:12,271 INFO L125 PetriNetUnfolderBase]: For 258/258 co-relation queries the response was YES. [2024-02-07 19:06:12,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 910 events. 274/910 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5273 event pairs, 81 based on Foata normal form. 21/918 useless extension candidates. Maximal degree in co-relation 1760. Up to 370 conditions per place. [2024-02-07 19:06:12,276 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 70 selfloop transitions, 7 changer transitions 4/118 dead transitions. [2024-02-07 19:06:12,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 118 transitions, 478 flow [2024-02-07 19:06:12,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:12,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:12,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2024-02-07 19:06:12,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-02-07 19:06:12,278 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 236 flow. Second operand 4 states and 288 transitions. [2024-02-07 19:06:12,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 118 transitions, 478 flow [2024-02-07 19:06:12,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 459 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-02-07 19:06:12,282 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 233 flow [2024-02-07 19:06:12,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2024-02-07 19:06:12,284 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -6 predicate places. [2024-02-07 19:06:12,284 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 233 flow [2024-02-07 19:06:12,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 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 19:06:12,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:12,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:12,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:06:12,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:06:12,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:12,285 INFO L85 PathProgramCache]: Analyzing trace with hash -81200722, now seen corresponding path program 1 times [2024-02-07 19:06:12,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:12,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716578867] [2024-02-07 19:06:12,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:12,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:12,328 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 19:06:12,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716578867] [2024-02-07 19:06:12,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716578867] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:12,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:12,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:06:12,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312535428] [2024-02-07 19:06:12,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:12,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:06:12,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:12,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:06:12,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:06:12,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 99 [2024-02-07 19:06:12,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 19:06:12,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:12,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 99 [2024-02-07 19:06:12,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:12,489 INFO L124 PetriNetUnfolderBase]: 335/1095 cut-off events. [2024-02-07 19:06:12,489 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2024-02-07 19:06:12,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2238 conditions, 1095 events. 335/1095 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6625 event pairs, 225 based on Foata normal form. 31/1113 useless extension candidates. Maximal degree in co-relation 2224. Up to 615 conditions per place. [2024-02-07 19:06:12,494 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 70 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2024-02-07 19:06:12,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 449 flow [2024-02-07 19:06:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:06:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:06:12,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2024-02-07 19:06:12,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7205387205387206 [2024-02-07 19:06:12,496 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 233 flow. Second operand 3 states and 214 transitions. [2024-02-07 19:06:12,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 449 flow [2024-02-07 19:06:12,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 106 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:06:12,499 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 254 flow [2024-02-07 19:06:12,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-02-07 19:06:12,500 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -5 predicate places. [2024-02-07 19:06:12,500 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 254 flow [2024-02-07 19:06:12,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 19:06:12,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:12,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:12,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:06:12,501 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:06:12,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:12,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1777745438, now seen corresponding path program 1 times [2024-02-07 19:06:12,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:12,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634983352] [2024-02-07 19:06:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:12,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:12,556 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 19:06:12,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:12,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634983352] [2024-02-07 19:06:12,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634983352] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:12,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:12,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:06:12,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139836847] [2024-02-07 19:06:12,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:12,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:06:12,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:06:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:06:12,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2024-02-07 19:06:12,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 19:06:12,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:12,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2024-02-07 19:06:12,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:12,726 INFO L124 PetriNetUnfolderBase]: 315/963 cut-off events. [2024-02-07 19:06:12,727 INFO L125 PetriNetUnfolderBase]: For 468/468 co-relation queries the response was YES. [2024-02-07 19:06:12,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2159 conditions, 963 events. 315/963 cut-off events. For 468/468 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5460 event pairs, 225 based on Foata normal form. 54/1004 useless extension candidates. Maximal degree in co-relation 2142. Up to 555 conditions per place. [2024-02-07 19:06:12,730 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 49 selfloop transitions, 3 changer transitions 21/101 dead transitions. [2024-02-07 19:06:12,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 101 transitions, 448 flow [2024-02-07 19:06:12,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-02-07 19:06:12,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6262626262626263 [2024-02-07 19:06:12,732 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 254 flow. Second operand 4 states and 248 transitions. [2024-02-07 19:06:12,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 101 transitions, 448 flow [2024-02-07 19:06:12,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 101 transitions, 442 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:06:12,735 INFO L231 Difference]: Finished difference. Result has 90 places, 68 transitions, 199 flow [2024-02-07 19:06:12,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=90, PETRI_TRANSITIONS=68} [2024-02-07 19:06:12,736 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -6 predicate places. [2024-02-07 19:06:12,736 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 68 transitions, 199 flow [2024-02-07 19:06:12,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 19:06:12,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:12,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:12,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:06:12,737 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:06:12,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:12,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2111793981, now seen corresponding path program 1 times [2024-02-07 19:06:12,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:12,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589942253] [2024-02-07 19:06:12,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:12,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:12,887 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 19:06:12,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:12,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589942253] [2024-02-07 19:06:12,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589942253] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:12,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:12,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:06:12,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609189635] [2024-02-07 19:06:12,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:12,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:06:12,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:12,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:06:12,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:06:12,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 99 [2024-02-07 19:06:12,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 68 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 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 19:06:12,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:12,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 99 [2024-02-07 19:06:12,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:12,994 INFO L124 PetriNetUnfolderBase]: 115/520 cut-off events. [2024-02-07 19:06:12,995 INFO L125 PetriNetUnfolderBase]: For 218/218 co-relation queries the response was YES. [2024-02-07 19:06:12,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 520 events. 115/520 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2456 event pairs, 45 based on Foata normal form. 40/553 useless extension candidates. Maximal degree in co-relation 1084. Up to 187 conditions per place. [2024-02-07 19:06:12,997 INFO L140 encePairwiseOnDemand]: 81/99 looper letters, 21 selfloop transitions, 14 changer transitions 28/91 dead transitions. [2024-02-07 19:06:12,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 91 transitions, 404 flow [2024-02-07 19:06:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:12,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 274 transitions. [2024-02-07 19:06:12,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6919191919191919 [2024-02-07 19:06:12,999 INFO L175 Difference]: Start difference. First operand has 90 places, 68 transitions, 199 flow. Second operand 4 states and 274 transitions. [2024-02-07 19:06:12,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 91 transitions, 404 flow [2024-02-07 19:06:13,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 91 transitions, 360 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-07 19:06:13,002 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 189 flow [2024-02-07 19:06:13,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2024-02-07 19:06:13,002 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -16 predicate places. [2024-02-07 19:06:13,003 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 189 flow [2024-02-07 19:06:13,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 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 19:06:13,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:13,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:13,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:06:13,004 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:06:13,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:13,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1003832856, now seen corresponding path program 1 times [2024-02-07 19:06:13,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:13,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475560373] [2024-02-07 19:06:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:13,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:13,272 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 19:06:13,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:13,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475560373] [2024-02-07 19:06:13,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475560373] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:13,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:13,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:06:13,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381696856] [2024-02-07 19:06:13,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:13,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:06:13,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:13,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:06:13,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:06:13,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 99 [2024-02-07 19:06:13,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 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 19:06:13,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:13,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 99 [2024-02-07 19:06:13,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:13,339 INFO L124 PetriNetUnfolderBase]: 37/222 cut-off events. [2024-02-07 19:06:13,340 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-02-07 19:06:13,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 222 events. 37/222 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 656 event pairs, 8 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 468. Up to 120 conditions per place. [2024-02-07 19:06:13,341 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 27 selfloop transitions, 4 changer transitions 9/63 dead transitions. [2024-02-07 19:06:13,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 63 transitions, 275 flow [2024-02-07 19:06:13,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2024-02-07 19:06:13,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6186868686868687 [2024-02-07 19:06:13,343 INFO L175 Difference]: Start difference. First operand has 80 places, 59 transitions, 189 flow. Second operand 4 states and 245 transitions. [2024-02-07 19:06:13,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 63 transitions, 275 flow [2024-02-07 19:06:13,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 248 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-07 19:06:13,345 INFO L231 Difference]: Finished difference. Result has 69 places, 49 transitions, 141 flow [2024-02-07 19:06:13,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2024-02-07 19:06:13,345 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -27 predicate places. [2024-02-07 19:06:13,346 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 49 transitions, 141 flow [2024-02-07 19:06:13,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 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 19:06:13,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:13,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:13,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:06:13,347 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:06:13,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:13,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1048607339, now seen corresponding path program 1 times [2024-02-07 19:06:13,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:13,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635699510] [2024-02-07 19:06:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:13,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:13,624 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 19:06:13,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:13,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635699510] [2024-02-07 19:06:13,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635699510] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:13,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:13,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:06:13,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251505044] [2024-02-07 19:06:13,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:13,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:06:13,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:13,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:06:13,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:06:13,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 99 [2024-02-07 19:06:13,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 49 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 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 19:06:13,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:13,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 99 [2024-02-07 19:06:13,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:13,681 INFO L124 PetriNetUnfolderBase]: 21/132 cut-off events. [2024-02-07 19:06:13,681 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-02-07 19:06:13,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 132 events. 21/132 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 327 event pairs, 8 based on Foata normal form. 10/134 useless extension candidates. Maximal degree in co-relation 256. Up to 47 conditions per place. [2024-02-07 19:06:13,682 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2024-02-07 19:06:13,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 220 flow [2024-02-07 19:06:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-02-07 19:06:13,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-02-07 19:06:13,687 INFO L175 Difference]: Start difference. First operand has 69 places, 49 transitions, 141 flow. Second operand 4 states and 242 transitions. [2024-02-07 19:06:13,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 220 flow [2024-02-07 19:06:13,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 193 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-07 19:06:13,689 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2024-02-07 19:06:13,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2024-02-07 19:06:13,690 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -40 predicate places. [2024-02-07 19:06:13,690 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2024-02-07 19:06:13,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 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 19:06:13,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 25 remaining) [2024-02-07 19:06:13,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (23 of 25 remaining) [2024-02-07 19:06:13,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 25 remaining) [2024-02-07 19:06:13,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (21 of 25 remaining) [2024-02-07 19:06:13,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 25 remaining) [2024-02-07 19:06:13,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (19 of 25 remaining) [2024-02-07 19:06:13,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 25 remaining) [2024-02-07 19:06:13,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (17 of 25 remaining) [2024-02-07 19:06:13,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 25 remaining) [2024-02-07 19:06:13,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 25 remaining) [2024-02-07 19:06:13,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 25 remaining) [2024-02-07 19:06:13,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 25 remaining) [2024-02-07 19:06:13,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 25 remaining) [2024-02-07 19:06:13,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 25 remaining) [2024-02-07 19:06:13,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 25 remaining) [2024-02-07 19:06:13,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 25 remaining) [2024-02-07 19:06:13,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 25 remaining) [2024-02-07 19:06:13,701 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 25 remaining) [2024-02-07 19:06:13,701 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 25 remaining) [2024-02-07 19:06:13,701 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 25 remaining) [2024-02-07 19:06:13,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 25 remaining) [2024-02-07 19:06:13,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 25 remaining) [2024-02-07 19:06:13,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 25 remaining) [2024-02-07 19:06:13,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 25 remaining) [2024-02-07 19:06:13,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 25 remaining) [2024-02-07 19:06:13,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:06:13,703 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:13,717 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 19:06:13,717 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 19:06:13,721 INFO L503 ceAbstractionStarter]: Automizer considered 12 witness invariants [2024-02-07 19:06:13,721 INFO L504 ceAbstractionStarter]: WitnessConsidered=12 [2024-02-07 19:06:13,722 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 07:06:13 BasicIcfg [2024-02-07 19:06:13,723 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 19:06:13,723 INFO L158 Benchmark]: Toolchain (without parser) took 5353.72ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 142.6MB in the beginning and 136.8MB in the end (delta: 5.8MB). Peak memory consumption was 83.4MB. Max. memory is 16.1GB. [2024-02-07 19:06:13,723 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:06:13,724 INFO L158 Benchmark]: Witness Parser took 0.22ms. Allocated memory is still 125.8MB. Free memory was 95.9MB in the beginning and 95.9MB in the end (delta: 26.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:06:13,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 566.32ms. Allocated memory is still 172.0MB. Free memory was 142.0MB in the beginning and 116.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-02-07 19:06:13,724 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.84ms. Allocated memory is still 172.0MB. Free memory was 116.8MB in the beginning and 114.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:06:13,725 INFO L158 Benchmark]: Boogie Preprocessor took 79.11ms. Allocated memory is still 172.0MB. Free memory was 114.7MB in the beginning and 112.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:06:13,725 INFO L158 Benchmark]: RCFGBuilder took 702.34ms. Allocated memory is still 172.0MB. Free memory was 112.0MB in the beginning and 124.7MB in the end (delta: -12.7MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2024-02-07 19:06:13,725 INFO L158 Benchmark]: TraceAbstraction took 3918.57ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 123.6MB in the beginning and 136.8MB in the end (delta: -13.2MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. [2024-02-07 19:06:13,727 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.22ms. Allocated memory is still 125.8MB. Free memory was 95.9MB in the beginning and 95.9MB in the end (delta: 26.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 566.32ms. Allocated memory is still 172.0MB. Free memory was 142.0MB in the beginning and 116.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.84ms. Allocated memory is still 172.0MB. Free memory was 116.8MB in the beginning and 114.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.11ms. Allocated memory is still 172.0MB. Free memory was 114.7MB in the beginning and 112.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 702.34ms. Allocated memory is still 172.0MB. Free memory was 112.0MB in the beginning and 124.7MB in the end (delta: -12.7MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3918.57ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 123.6MB in the beginning and 136.8MB in the end (delta: -13.2MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 709]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 713]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 716]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 720]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 688]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 689]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 691]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 692]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 696]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 697]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 699]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 139 locations, 25 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 445 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 403 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 136 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 856 IncrementalHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 136 mSolverCounterUnsat, 11 mSDtfsCounter, 856 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred in iteration=5, InterpolantAutomatonStates: 35, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 1365 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 19:06:13,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE