./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_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_27-multiple-protecting2_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_27-multiple-protecting2_true.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/13-privatized_27-multiple-protecting2_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 19:06:06,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:06:07,015 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:06:07,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:06:07,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:06:07,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:06:07,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:06:07,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:06:07,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:06:07,050 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:06:07,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:06:07,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:06:07,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:06:07,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:06:07,053 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:06:07,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:06:07,053 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:06:07,053 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:06:07,054 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:06:07,054 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:06:07,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:06:07,055 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:06:07,055 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:06:07,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:06:07,055 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:06:07,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:06:07,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:06:07,056 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:06:07,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:06:07,057 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:06:07,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:06:07,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:06:07,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:06:07,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:06:07,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:06:07,058 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:06:07,058 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:06:07,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:06:07,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:06:07,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:06:07,059 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:06:07,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:06:07,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:06:07,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:06:07,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:06:07,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:06:07,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:06:07,283 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:06:07,294 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:06:07,295 INFO L431 ainManager$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_27-multiple-protecting2_true.yml/witness.yml [2024-02-07 19:06:07,403 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:06:07,404 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:06:07,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-02-07 19:06:08,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:06:09,012 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:06:09,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-02-07 19:06:09,027 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/095edc7b2/4a1e1b79c31d4053af0c779a9e251902/FLAGf955c654d [2024-02-07 19:06:09,045 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/095edc7b2/4a1e1b79c31d4053af0c779a9e251902 [2024-02-07 19:06:09,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:06:09,047 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:06:09,050 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:06:09,050 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:06:09,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:06:09,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:06:07" (1/2) ... [2024-02-07 19:06:09,057 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@117e8dc7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:06:09, skipping insertion in model container [2024-02-07 19:06:09,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:06:07" (1/2) ... [2024-02-07 19:06:09,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20c9e4d8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:06:09, skipping insertion in model container [2024-02-07 19:06:09,060 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:06:09" (2/2) ... [2024-02-07 19:06:09,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@117e8dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09, skipping insertion in model container [2024-02-07 19:06:09,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:06:09" (2/2) ... [2024-02-07 19:06:09,061 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:06:09,100 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:06:09,101 INFO L76 edCorrectnessWitness]: Location invariant before [L691-L691] g1 == 1 [2024-02-07 19:06:09,101 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] g2 == 0 [2024-02-07 19:06:09,102 INFO L76 edCorrectnessWitness]: Location invariant before [L718-L718] g1 == 0 [2024-02-07 19:06:09,102 INFO L76 edCorrectnessWitness]: Location invariant before [L721-L721] g2 == 0 [2024-02-07 19:06:09,102 INFO L76 edCorrectnessWitness]: Location invariant before [L692-L692] g1 == 0 [2024-02-07 19:06:09,102 INFO L76 edCorrectnessWitness]: Location invariant before [L688-L688] g1 == 0 [2024-02-07 19:06:09,102 INFO L76 edCorrectnessWitness]: Location invariant before [L725-L725] g1 == 0 [2024-02-07 19:06:09,102 INFO L76 edCorrectnessWitness]: Location invariant before [L714-L714] g1 == 0 [2024-02-07 19:06:09,103 INFO L76 edCorrectnessWitness]: Location invariant before [L700-L700] g2 == 1 [2024-02-07 19:06:09,103 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] g2 == 1 [2024-02-07 19:06:09,103 INFO L76 edCorrectnessWitness]: Location invariant before [L689-L689] g1 == 1 [2024-02-07 19:06:09,103 INFO L76 edCorrectnessWitness]: Location invariant before [L699-L699] g2 == 0 [2024-02-07 19:06:09,151 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:06:09,312 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_27-multiple-protecting2_true.i[1097,1110] [2024-02-07 19:06:09,485 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:06:09,497 INFO L206 MainTranslator]: Completed pre-run [2024-02-07 19:06:09,513 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_27-multiple-protecting2_true.i[1097,1110] 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 19:06:09,575 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:06:09,611 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:06:09,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09 WrapperNode [2024-02-07 19:06:09,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:06:09,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:06:09,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:06:09,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:06:09,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09" (1/1) ... [2024-02-07 19:06:09,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09" (1/1) ... [2024-02-07 19:06:09,672 INFO L138 Inliner]: procedures = 164, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 125 [2024-02-07 19:06:09,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:06:09,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:06:09,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:06:09,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:06:09,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09" (1/1) ... [2024-02-07 19:06:09,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09" (1/1) ... [2024-02-07 19:06:09,688 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09" (1/1) ... [2024-02-07 19:06:09,706 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 5, 2, 5, 5, 2]. 24 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 0, 5, 5, 0]. The 2 writes are split as follows [0, 0, 1, 0, 0, 1]. [2024-02-07 19:06:09,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09" (1/1) ... [2024-02-07 19:06:09,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09" (1/1) ... [2024-02-07 19:06:09,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09" (1/1) ... [2024-02-07 19:06:09,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09" (1/1) ... [2024-02-07 19:06:09,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09" (1/1) ... [2024-02-07 19:06:09,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09" (1/1) ... [2024-02-07 19:06:09,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:06:09,737 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:06:09,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:06:09,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:06:09,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09" (1/1) ... [2024-02-07 19:06:09,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:06:09,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:06:09,771 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 19:06:09,794 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 19:06:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:06:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:06:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:06:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:06:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 19:06:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 19:06:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-02-07 19:06:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-02-07 19:06:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:06:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:06:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:06:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:06:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:06:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 19:06:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:06:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:06:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:06:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 19:06:09,812 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 19:06:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:06:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:06:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:06:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:06:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:06:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:06:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 19:06:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:06:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:06:09,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:06:09,815 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 19:06:09,959 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:06:09,961 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:06:10,203 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:06:10,203 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:06:10,455 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:06:10,460 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 19:06:10,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:06:10 BoogieIcfgContainer [2024-02-07 19:06:10,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:06:10,462 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:06:10,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:06:10,465 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:06:10,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:06:07" (1/4) ... [2024-02-07 19:06:10,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40658306 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:06:10, skipping insertion in model container [2024-02-07 19:06:10,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:06:09" (2/4) ... [2024-02-07 19:06:10,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40658306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:06:10, skipping insertion in model container [2024-02-07 19:06:10,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:09" (3/4) ... [2024-02-07 19:06:10,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40658306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:06:10, skipping insertion in model container [2024-02-07 19:06:10,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:06:10" (4/4) ... [2024-02-07 19:06:10,469 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2024-02-07 19:06:10,485 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:06:10,486 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-02-07 19:06:10,486 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:06:10,540 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 19:06:10,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 105 transitions, 224 flow [2024-02-07 19:06:10,663 INFO L124 PetriNetUnfolderBase]: 4/103 cut-off events. [2024-02-07 19:06:10,663 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 19:06:10,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 103 events. 4/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 183 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2024-02-07 19:06:10,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 105 transitions, 224 flow [2024-02-07 19:06:10,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 101 transitions, 211 flow [2024-02-07 19:06:10,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:06:10,690 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;@5b35bb2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:06:10,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-02-07 19:06:10,698 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:06:10,698 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2024-02-07 19:06:10,698 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:06:10,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:10,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:10,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 19:06:10,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:10,705 INFO L85 PathProgramCache]: Analyzing trace with hash -885708713, now seen corresponding path program 1 times [2024-02-07 19:06:10,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:10,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149488556] [2024-02-07 19:06:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:10,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:10,984 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 19:06:10,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:10,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149488556] [2024-02-07 19:06:10,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149488556] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:10,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:10,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:06:10,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451010061] [2024-02-07 19:06:10,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:10,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:06:11,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:11,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:06:11,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:06:11,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 105 [2024-02-07 19:06:11,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 19:06:11,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:11,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 105 [2024-02-07 19:06:11,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:12,655 INFO L124 PetriNetUnfolderBase]: 6292/13515 cut-off events. [2024-02-07 19:06:12,655 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-02-07 19:06:12,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23682 conditions, 13515 events. 6292/13515 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 118053 event pairs, 4128 based on Foata normal form. 1011/13954 useless extension candidates. Maximal degree in co-relation 23586. Up to 7285 conditions per place. [2024-02-07 19:06:12,740 INFO L140 encePairwiseOnDemand]: 89/105 looper letters, 80 selfloop transitions, 6 changer transitions 0/130 dead transitions. [2024-02-07 19:06:12,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 130 transitions, 444 flow [2024-02-07 19:06:12,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:06:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:06:12,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2024-02-07 19:06:12,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7587301587301587 [2024-02-07 19:06:12,754 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 211 flow. Second operand 3 states and 239 transitions. [2024-02-07 19:06:12,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 130 transitions, 444 flow [2024-02-07 19:06:12,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 130 transitions, 438 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:06:12,763 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 238 flow [2024-02-07 19:06:12,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2024-02-07 19:06:12,769 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -1 predicate places. [2024-02-07 19:06:12,769 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 238 flow [2024-02-07 19:06:12,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 19:06:12,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:12,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:12,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:06:12,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 19:06:12,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:12,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1687165772, now seen corresponding path program 1 times [2024-02-07 19:06:12,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:12,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558147408] [2024-02-07 19:06:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:12,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:12,910 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 19:06:12,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:12,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558147408] [2024-02-07 19:06:12,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558147408] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:12,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:12,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:06:12,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399965450] [2024-02-07 19:06:12,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:12,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:06:12,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:12,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:06:12,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:06:12,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 105 [2024-02-07 19:06:12,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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 19:06:12,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:13,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 105 [2024-02-07 19:06:13,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:14,133 INFO L124 PetriNetUnfolderBase]: 5148/10303 cut-off events. [2024-02-07 19:06:14,134 INFO L125 PetriNetUnfolderBase]: For 1876/1876 co-relation queries the response was YES. [2024-02-07 19:06:14,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20167 conditions, 10303 events. 5148/10303 cut-off events. For 1876/1876 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 81205 event pairs, 3444 based on Foata normal form. 644/10647 useless extension candidates. Maximal degree in co-relation 9656. Up to 5381 conditions per place. [2024-02-07 19:06:14,183 INFO L140 encePairwiseOnDemand]: 97/105 looper letters, 78 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2024-02-07 19:06:14,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 123 transitions, 440 flow [2024-02-07 19:06:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-02-07 19:06:14,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-02-07 19:06:14,187 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 238 flow. Second operand 4 states and 262 transitions. [2024-02-07 19:06:14,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 123 transitions, 440 flow [2024-02-07 19:06:14,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 123 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:06:14,200 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 216 flow [2024-02-07 19:06:14,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2024-02-07 19:06:14,201 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -2 predicate places. [2024-02-07 19:06:14,201 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 216 flow [2024-02-07 19:06:14,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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 19:06:14,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:14,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:14,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:06:14,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 19:06:14,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:14,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1201625829, now seen corresponding path program 1 times [2024-02-07 19:06:14,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:14,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620494964] [2024-02-07 19:06:14,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:14,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:14,262 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 19:06:14,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:14,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620494964] [2024-02-07 19:06:14,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620494964] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:14,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:14,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:06:14,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895939807] [2024-02-07 19:06:14,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:14,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:06:14,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:14,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:06:14,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:06:14,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 105 [2024-02-07 19:06:14,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 19:06:14,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:14,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 105 [2024-02-07 19:06:14,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:15,276 INFO L124 PetriNetUnfolderBase]: 5690/12173 cut-off events. [2024-02-07 19:06:15,277 INFO L125 PetriNetUnfolderBase]: For 2354/2354 co-relation queries the response was YES. [2024-02-07 19:06:15,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23206 conditions, 12173 events. 5690/12173 cut-off events. For 2354/2354 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 104302 event pairs, 3734 based on Foata normal form. 212/11994 useless extension candidates. Maximal degree in co-relation 9443. Up to 6351 conditions per place. [2024-02-07 19:06:15,344 INFO L140 encePairwiseOnDemand]: 97/105 looper letters, 80 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2024-02-07 19:06:15,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 126 transitions, 465 flow [2024-02-07 19:06:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:06:15,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:06:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2024-02-07 19:06:15,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7396825396825397 [2024-02-07 19:06:15,347 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 216 flow. Second operand 3 states and 233 transitions. [2024-02-07 19:06:15,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 126 transitions, 465 flow [2024-02-07 19:06:15,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 126 transitions, 455 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:06:15,359 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 230 flow [2024-02-07 19:06:15,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2024-02-07 19:06:15,360 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -3 predicate places. [2024-02-07 19:06:15,360 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 230 flow [2024-02-07 19:06:15,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 19:06:15,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:15,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:15,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:06:15,362 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 19:06:15,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:15,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1404304431, now seen corresponding path program 1 times [2024-02-07 19:06:15,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:15,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062597291] [2024-02-07 19:06:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:15,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:15,461 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 19:06:15,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:15,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062597291] [2024-02-07 19:06:15,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062597291] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:15,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:15,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:06:15,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851734823] [2024-02-07 19:06:15,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:15,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:06:15,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:15,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:06:15,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:06:15,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 105 [2024-02-07 19:06:15,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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 19:06:15,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:15,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 105 [2024-02-07 19:06:15,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:16,537 INFO L124 PetriNetUnfolderBase]: 5122/10273 cut-off events. [2024-02-07 19:06:16,537 INFO L125 PetriNetUnfolderBase]: For 2514/2514 co-relation queries the response was YES. [2024-02-07 19:06:16,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20866 conditions, 10273 events. 5122/10273 cut-off events. For 2514/2514 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 81306 event pairs, 3378 based on Foata normal form. 560/10554 useless extension candidates. Maximal degree in co-relation 8009. Up to 5363 conditions per place. [2024-02-07 19:06:16,578 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 66 selfloop transitions, 3 changer transitions 13/121 dead transitions. [2024-02-07 19:06:16,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 121 transitions, 457 flow [2024-02-07 19:06:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:16,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 268 transitions. [2024-02-07 19:06:16,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-02-07 19:06:16,580 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 230 flow. Second operand 4 states and 268 transitions. [2024-02-07 19:06:16,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 121 transitions, 457 flow [2024-02-07 19:06:16,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 121 transitions, 451 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:06:16,584 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 205 flow [2024-02-07 19:06:16,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=100, PETRI_TRANSITIONS=82} [2024-02-07 19:06:16,585 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -4 predicate places. [2024-02-07 19:06:16,585 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 205 flow [2024-02-07 19:06:16,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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 19:06:16,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:16,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:16,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:06:16,586 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 19:06:16,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:16,586 INFO L85 PathProgramCache]: Analyzing trace with hash 169938178, now seen corresponding path program 1 times [2024-02-07 19:06:16,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:16,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249250424] [2024-02-07 19:06:16,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:16,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:16,638 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 19:06:16,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:16,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249250424] [2024-02-07 19:06:16,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249250424] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:16,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:16,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:06:16,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789987730] [2024-02-07 19:06:16,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:16,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:06:16,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:16,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:06:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:06:16,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 105 [2024-02-07 19:06:16,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 19:06:16,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:16,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 105 [2024-02-07 19:06:16,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:17,490 INFO L124 PetriNetUnfolderBase]: 5184/9581 cut-off events. [2024-02-07 19:06:17,490 INFO L125 PetriNetUnfolderBase]: For 2680/2680 co-relation queries the response was YES. [2024-02-07 19:06:17,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20419 conditions, 9581 events. 5184/9581 cut-off events. For 2680/2680 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 70717 event pairs, 2368 based on Foata normal form. 0/9519 useless extension candidates. Maximal degree in co-relation 9760. Up to 3657 conditions per place. [2024-02-07 19:06:17,524 INFO L140 encePairwiseOnDemand]: 91/105 looper letters, 90 selfloop transitions, 15 changer transitions 3/133 dead transitions. [2024-02-07 19:06:17,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 133 transitions, 557 flow [2024-02-07 19:06:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:06:17,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:06:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 306 transitions. [2024-02-07 19:06:17,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5828571428571429 [2024-02-07 19:06:17,526 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 205 flow. Second operand 5 states and 306 transitions. [2024-02-07 19:06:17,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 133 transitions, 557 flow [2024-02-07 19:06:17,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 133 transitions, 539 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:06:17,529 INFO L231 Difference]: Finished difference. Result has 86 places, 78 transitions, 225 flow [2024-02-07 19:06:17,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=86, PETRI_TRANSITIONS=78} [2024-02-07 19:06:17,530 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -18 predicate places. [2024-02-07 19:06:17,531 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 78 transitions, 225 flow [2024-02-07 19:06:17,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 19:06:17,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:17,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:17,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:06:17,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 19:06:17,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:17,532 INFO L85 PathProgramCache]: Analyzing trace with hash -411264611, now seen corresponding path program 1 times [2024-02-07 19:06:17,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:17,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401950525] [2024-02-07 19:06:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:17,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:17,616 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 19:06:17,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:17,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401950525] [2024-02-07 19:06:17,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401950525] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:17,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:17,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:06:17,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928019431] [2024-02-07 19:06:17,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:17,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:06:17,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:17,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:06:17,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:06:17,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-02-07 19:06:17,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 78 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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 19:06:17,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:17,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-02-07 19:06:17,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:17,904 INFO L124 PetriNetUnfolderBase]: 1616/3858 cut-off events. [2024-02-07 19:06:17,905 INFO L125 PetriNetUnfolderBase]: For 1194/1194 co-relation queries the response was YES. [2024-02-07 19:06:17,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7824 conditions, 3858 events. 1616/3858 cut-off events. For 1194/1194 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 28423 event pairs, 476 based on Foata normal form. 212/4018 useless extension candidates. Maximal degree in co-relation 5202. Up to 2121 conditions per place. [2024-02-07 19:06:17,919 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 73 selfloop transitions, 6 changer transitions 1/113 dead transitions. [2024-02-07 19:06:17,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 113 transitions, 487 flow [2024-02-07 19:06:17,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2024-02-07 19:06:17,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-02-07 19:06:17,922 INFO L175 Difference]: Start difference. First operand has 86 places, 78 transitions, 225 flow. Second operand 4 states and 288 transitions. [2024-02-07 19:06:17,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 113 transitions, 487 flow [2024-02-07 19:06:17,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 113 transitions, 472 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-02-07 19:06:17,926 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 240 flow [2024-02-07 19:06:17,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2024-02-07 19:06:17,927 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -17 predicate places. [2024-02-07 19:06:17,927 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 240 flow [2024-02-07 19:06:17,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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 19:06:17,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:17,927 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] [2024-02-07 19:06:17,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:06:17,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 19:06:17,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:17,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1216786051, now seen corresponding path program 1 times [2024-02-07 19:06:17,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:17,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097661849] [2024-02-07 19:06:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:17,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:18,172 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 19:06:18,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:18,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097661849] [2024-02-07 19:06:18,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097661849] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:18,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:18,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:06:18,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637085833] [2024-02-07 19:06:18,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:18,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:06:18,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:18,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:06:18,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:06:18,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-02-07 19:06:18,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 240 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 19:06:18,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:18,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-02-07 19:06:18,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:18,413 INFO L124 PetriNetUnfolderBase]: 970/2398 cut-off events. [2024-02-07 19:06:18,413 INFO L125 PetriNetUnfolderBase]: For 853/853 co-relation queries the response was YES. [2024-02-07 19:06:18,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5013 conditions, 2398 events. 970/2398 cut-off events. For 853/853 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 15863 event pairs, 210 based on Foata normal form. 64/2435 useless extension candidates. Maximal degree in co-relation 2603. Up to 1652 conditions per place. [2024-02-07 19:06:18,422 INFO L140 encePairwiseOnDemand]: 101/105 looper letters, 39 selfloop transitions, 4 changer transitions 16/85 dead transitions. [2024-02-07 19:06:18,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 85 transitions, 349 flow [2024-02-07 19:06:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:18,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2024-02-07 19:06:18,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-02-07 19:06:18,425 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 240 flow. Second operand 4 states and 266 transitions. [2024-02-07 19:06:18,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 85 transitions, 349 flow [2024-02-07 19:06:18,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 325 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-07 19:06:18,428 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 154 flow [2024-02-07 19:06:18,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2024-02-07 19:06:18,429 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -23 predicate places. [2024-02-07 19:06:18,429 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 154 flow [2024-02-07 19:06:18,430 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 19:06:18,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:18,430 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] [2024-02-07 19:06:18,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:06:18,431 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 19:06:18,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:18,431 INFO L85 PathProgramCache]: Analyzing trace with hash 112298454, now seen corresponding path program 1 times [2024-02-07 19:06:18,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:18,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683048194] [2024-02-07 19:06:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:18,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:18,536 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 19:06:18,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683048194] [2024-02-07 19:06:18,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683048194] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:18,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:18,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:06:18,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237017473] [2024-02-07 19:06:18,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:18,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:06:18,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:18,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:06:18,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:06:18,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-02-07 19:06:18,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 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 19:06:18,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:18,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-02-07 19:06:18,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:18,693 INFO L124 PetriNetUnfolderBase]: 449/1231 cut-off events. [2024-02-07 19:06:18,694 INFO L125 PetriNetUnfolderBase]: For 375/375 co-relation queries the response was YES. [2024-02-07 19:06:18,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2497 conditions, 1231 events. 449/1231 cut-off events. For 375/375 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7010 event pairs, 177 based on Foata normal form. 110/1320 useless extension candidates. Maximal degree in co-relation 1148. Up to 498 conditions per place. [2024-02-07 19:06:18,698 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 26 selfloop transitions, 12 changer transitions 20/81 dead transitions. [2024-02-07 19:06:18,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 326 flow [2024-02-07 19:06:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:18,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:18,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 274 transitions. [2024-02-07 19:06:18,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2024-02-07 19:06:18,700 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 154 flow. Second operand 4 states and 274 transitions. [2024-02-07 19:06:18,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 326 flow [2024-02-07 19:06:18,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 81 transitions, 297 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-07 19:06:18,702 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 142 flow [2024-02-07 19:06:18,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2024-02-07 19:06:18,703 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -34 predicate places. [2024-02-07 19:06:18,703 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 142 flow [2024-02-07 19:06:18,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 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 19:06:18,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:18,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:18,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:06:18,705 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 19:06:18,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:18,705 INFO L85 PathProgramCache]: Analyzing trace with hash 266412183, now seen corresponding path program 1 times [2024-02-07 19:06:18,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:18,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872434754] [2024-02-07 19:06:18,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:18,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:18,926 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 19:06:18,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:18,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872434754] [2024-02-07 19:06:18,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872434754] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:18,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:18,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:06:18,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675223504] [2024-02-07 19:06:18,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:18,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:06:18,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:18,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:06:18,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:06:18,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-02-07 19:06:18,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 142 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 19:06:18,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:18,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-02-07 19:06:18,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:19,015 INFO L124 PetriNetUnfolderBase]: 151/474 cut-off events. [2024-02-07 19:06:19,015 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-02-07 19:06:19,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 474 events. 151/474 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2271 event pairs, 32 based on Foata normal form. 30/496 useless extension candidates. Maximal degree in co-relation 367. Up to 243 conditions per place. [2024-02-07 19:06:19,017 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2024-02-07 19:06:19,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 274 flow [2024-02-07 19:06:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-02-07 19:06:19,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-02-07 19:06:19,018 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 142 flow. Second operand 4 states and 258 transitions. [2024-02-07 19:06:19,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 274 flow [2024-02-07 19:06:19,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 248 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 19:06:19,019 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2024-02-07 19:06:19,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2024-02-07 19:06:19,020 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -44 predicate places. [2024-02-07 19:06:19,020 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2024-02-07 19:06:19,021 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 19:06:19,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 26 remaining) [2024-02-07 19:06:19,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 26 remaining) [2024-02-07 19:06:19,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 26 remaining) [2024-02-07 19:06:19,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 26 remaining) [2024-02-07 19:06:19,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 26 remaining) [2024-02-07 19:06:19,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (20 of 26 remaining) [2024-02-07 19:06:19,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 26 remaining) [2024-02-07 19:06:19,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (18 of 26 remaining) [2024-02-07 19:06:19,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 26 remaining) [2024-02-07 19:06:19,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (16 of 26 remaining) [2024-02-07 19:06:19,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 26 remaining) [2024-02-07 19:06:19,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (14 of 26 remaining) [2024-02-07 19:06:19,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 26 remaining) [2024-02-07 19:06:19,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2024-02-07 19:06:19,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 26 remaining) [2024-02-07 19:06:19,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 26 remaining) [2024-02-07 19:06:19,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 26 remaining) [2024-02-07 19:06:19,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 26 remaining) [2024-02-07 19:06:19,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 26 remaining) [2024-02-07 19:06:19,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 26 remaining) [2024-02-07 19:06:19,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 26 remaining) [2024-02-07 19:06:19,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 26 remaining) [2024-02-07 19:06:19,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 26 remaining) [2024-02-07 19:06:19,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 26 remaining) [2024-02-07 19:06:19,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 26 remaining) [2024-02-07 19:06:19,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 26 remaining) [2024-02-07 19:06:19,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:06:19,028 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:19,032 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 19:06:19,032 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 19:06:19,035 INFO L503 ceAbstractionStarter]: Automizer considered 12 witness invariants [2024-02-07 19:06:19,035 INFO L504 ceAbstractionStarter]: WitnessConsidered=12 [2024-02-07 19:06:19,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 07:06:19 BasicIcfg [2024-02-07 19:06:19,036 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 19:06:19,037 INFO L158 Benchmark]: Toolchain (without parser) took 9989.69ms. Allocated memory was 161.5MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 101.0MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 558.2MB. Max. memory is 16.1GB. [2024-02-07 19:06:19,037 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 161.5MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:06:19,037 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 161.5MB. Free memory was 124.0MB in the beginning and 123.8MB in the end (delta: 193.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:06:19,037 INFO L158 Benchmark]: CACSL2BoogieTranslator took 562.43ms. Allocated memory is still 161.5MB. Free memory was 100.8MB in the beginning and 75.4MB in the end (delta: 25.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-02-07 19:06:19,037 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.92ms. Allocated memory is still 161.5MB. Free memory was 75.2MB in the beginning and 73.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:06:19,038 INFO L158 Benchmark]: Boogie Preprocessor took 62.41ms. Allocated memory is still 161.5MB. Free memory was 73.1MB in the beginning and 70.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 19:06:19,038 INFO L158 Benchmark]: RCFGBuilder took 723.68ms. Allocated memory is still 161.5MB. Free memory was 70.4MB in the beginning and 109.8MB in the end (delta: -39.4MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2024-02-07 19:06:19,038 INFO L158 Benchmark]: TraceAbstraction took 8573.88ms. Allocated memory was 161.5MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 109.2MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 565.0MB. Max. memory is 16.1GB. [2024-02-07 19:06:19,039 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 161.5MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 161.5MB. Free memory was 124.0MB in the beginning and 123.8MB in the end (delta: 193.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 562.43ms. Allocated memory is still 161.5MB. Free memory was 100.8MB in the beginning and 75.4MB in the end (delta: 25.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.92ms. Allocated memory is still 161.5MB. Free memory was 75.2MB in the beginning and 73.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.41ms. Allocated memory is still 161.5MB. Free memory was 73.1MB in the beginning and 70.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 723.68ms. Allocated memory is still 161.5MB. Free memory was 70.4MB in the beginning and 109.8MB in the end (delta: -39.4MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * TraceAbstraction took 8573.88ms. Allocated memory was 161.5MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 109.2MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 565.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 703]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 714]: 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: 718]: 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: 721]: 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: 725]: 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 148 locations, 26 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: 8.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 558 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 505 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 138 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1043 IncrementalHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 138 mSolverCounterUnsat, 22 mSDtfsCounter, 1043 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=6, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 920 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 19:06:19,071 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