./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-1_1-join.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/race-1_1-join.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 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/ldv-races/race-1_1-join.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/race-1_1-join.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-dev-59af5db-m [2024-02-02 09:15:50,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:15:50,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:15:50,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:15:50,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:15:50,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:15:50,567 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:15:50,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:15:50,568 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:15:50,571 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:15:50,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:15:50,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:15:50,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:15:50,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:15:50,574 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:15:50,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:15:50,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:15:50,574 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:15:50,574 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:15:50,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:15:50,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:15:50,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:15:50,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:15:50,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:15:50,576 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:15:50,576 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:15:50,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:15:50,576 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:15:50,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:15:50,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:15:50,578 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:15:50,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:15:50,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:15:50,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:15:50,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:15:50,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:15:50,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:15:50,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:15:50,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:15:50,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:15:50,580 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:15:50,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:15:50,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:15:50,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:15:50,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:15:50,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:15:50,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:15:50,844 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:15:50,849 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:15:50,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_1-join.i [2024-02-02 09:15:51,860 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:15:52,116 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:15:52,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i [2024-02-02 09:15:52,139 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e81b1b001/5c659c9cfb38437db7db87f2d010829f/FLAG41b7ab0cc [2024-02-02 09:15:52,156 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e81b1b001/5c659c9cfb38437db7db87f2d010829f [2024-02-02 09:15:52,158 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:15:52,159 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:15:52,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/race-1_1-join.yml/witness.yml [2024-02-02 09:15:52,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:15:52,258 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:15:52,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:15:52,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:15:52,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:15:52,263 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:15:52" (1/2) ... [2024-02-02 09:15:52,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16863e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:15:52, skipping insertion in model container [2024-02-02 09:15:52,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:15:52" (1/2) ... [2024-02-02 09:15:52,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b164eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:15:52, skipping insertion in model container [2024-02-02 09:15:52,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:15:52" (2/2) ... [2024-02-02 09:15:52,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16863e1b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:52, skipping insertion in model container [2024-02-02 09:15:52,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:15:52" (2/2) ... [2024-02-02 09:15:52,266 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:15:52,340 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:15:52,342 INFO L101 nessWitnessExtractor]: Location invariant before [L1702-L1702] (unsigned long )arg == 0UL [2024-02-02 09:15:52,342 INFO L101 nessWitnessExtractor]: Location invariant before [L1715-L1715] pdev == 3 [2024-02-02 09:15:52,342 INFO L101 nessWitnessExtractor]: Location invariant before [L22-L22] pdev == 1 [2024-02-02 09:15:52,342 INFO L101 nessWitnessExtractor]: Location invariant before [L1705-L1705] pdev == 0 [2024-02-02 09:15:52,342 INFO L101 nessWitnessExtractor]: Location invariant before [L1699-L1699] ((((((0 <= pdev) && (1 <= pdev)) && (pdev <= 6)) && (pdev <= 127)) && ((unsigned long )arg == 0UL)) && (pdev != 0)) && ((pdev == 1 || pdev == 5) || pdev == 6) [2024-02-02 09:15:52,342 INFO L101 nessWitnessExtractor]: Location invariant before [L1713-L1713] pdev == 3 [2024-02-02 09:15:52,343 INFO L101 nessWitnessExtractor]: Location invariant before [L1709-L1709] pdev == 1 [2024-02-02 09:15:52,343 INFO L101 nessWitnessExtractor]: Location invariant before [L1698-L1698] (unsigned long )arg == 0UL [2024-02-02 09:15:52,343 INFO L101 nessWitnessExtractor]: Location invariant before [L1693-L1693] ((expression == 0) && (((((((((0 <= pdev && 1 <= pdev) && pdev <= 3) && pdev <= 127) && expression == 1) && pdev % 2 == 1) && pdev != 0) && (pdev == 1 || pdev == 3)) || ((0 <= expression && expression <= 1) && (expression == 0 || expression == 1))) || ((((((((0 <= expression && 0 <= pdev) && 1 <= pdev) && expression <= 1) && pdev <= 6) && pdev <= 127) && pdev != 0) && (expression == 0 || expression == 1)) && ((pdev == 1 || pdev == 5) || pdev == 6)))) && (expression == 1) [2024-02-02 09:15:52,343 INFO L101 nessWitnessExtractor]: Location invariant before [L1701-L1701] ((((((0 <= pdev) && (1 <= pdev)) && (pdev <= 6)) && (pdev <= 127)) && ((unsigned long )arg == 0UL)) && (pdev != 0)) && ((pdev == 1 || pdev == 5) || pdev == 6) [2024-02-02 09:15:52,343 INFO L101 nessWitnessExtractor]: Location invariant before [L1707-L1707] pdev == 1 [2024-02-02 09:15:52,343 INFO L101 nessWitnessExtractor]: Location invariant before [L1708-L1711] pdev == 1 [2024-02-02 09:15:52,343 INFO L101 nessWitnessExtractor]: Location invariant before [L1706-L1706] pdev == 0 [2024-02-02 09:15:52,343 INFO L101 nessWitnessExtractor]: Location invariant before [L1721-L1721] (unsigned long )status == 0UL [2024-02-02 09:15:52,343 INFO L101 nessWitnessExtractor]: Location invariant before [L1700-L1700] ((((((0 <= pdev) && (1 <= pdev)) && (pdev <= 6)) && (pdev <= 127)) && ((unsigned long )arg == 0UL)) && (pdev != 0)) && ((pdev == 1 || pdev == 5) || pdev == 6) [2024-02-02 09:15:52,343 INFO L101 nessWitnessExtractor]: Location invariant before [L1712-L1712] pdev == 1 [2024-02-02 09:15:52,343 INFO L101 nessWitnessExtractor]: Location invariant before [L1720-L1720] (unsigned long )status == 0UL [2024-02-02 09:15:52,343 INFO L101 nessWitnessExtractor]: Location invariant after [L1717-L1723] (unsigned long )status == 0UL [2024-02-02 09:15:52,344 INFO L101 nessWitnessExtractor]: Location invariant before [L1722-L1722] (unsigned long )status == 0UL [2024-02-02 09:15:52,344 INFO L101 nessWitnessExtractor]: Location invariant before [L1714-L1714] pdev == 3 [2024-02-02 09:15:52,386 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:15:52,903 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i[76068,76081] [2024-02-02 09:15:52,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:15:52,951 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:15:52,958 WARN L424 MainDispatcher]: Unable to annotate typedef unsigned int __mode_t; with a witness entry [2024-02-02 09:15:53,005 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i[76068,76081] [2024-02-02 09:15:53,005 WARN L424 MainDispatcher]: Unable to annotate void ldv_assert(int expression) { if (!expression) { ERROR: {reach_error();abort();}}; return; } with a witness entry 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 Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:15:53,048 WARN L424 MainDispatcher]: Unable to annotate void module_exit() { void *status; pthread_join(t1, &status); pthread_mutex_destroy(&mutex); pdev = 5; ldv_assert(pdev==5); } with a witness entry [2024-02-02 09:15:53,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:15:53,111 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:15:53,111 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53 WrapperNode [2024-02-02 09:15:53,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:15:53,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:15:53,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:15:53,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:15:53,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53" (1/1) ... [2024-02-02 09:15:53,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53" (1/1) ... [2024-02-02 09:15:53,165 INFO L138 Inliner]: procedures = 481, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 120 [2024-02-02 09:15:53,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:15:53,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:15:53,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:15:53,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:15:53,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53" (1/1) ... [2024-02-02 09:15:53,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53" (1/1) ... [2024-02-02 09:15:53,203 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53" (1/1) ... [2024-02-02 09:15:53,228 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 3, 5, 4]. 36 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 1, 5, 0]. The 2 writes are split as follows [0, 1, 0, 1]. [2024-02-02 09:15:53,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53" (1/1) ... [2024-02-02 09:15:53,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53" (1/1) ... [2024-02-02 09:15:53,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53" (1/1) ... [2024-02-02 09:15:53,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53" (1/1) ... [2024-02-02 09:15:53,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53" (1/1) ... [2024-02-02 09:15:53,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53" (1/1) ... [2024-02-02 09:15:53,291 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:15:53,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:15:53,292 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:15:53,292 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:15:53,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53" (1/1) ... [2024-02-02 09:15:53,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:15:53,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:15:53,329 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) [2024-02-02 09:15:53,347 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 [2024-02-02 09:15:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:15:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:15:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:15:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:15:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-02 09:15:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 09:15:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:15:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-02 09:15:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-02 09:15:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-02 09:15:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-02 09:15:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:15:53,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:15:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:15:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-02 09:15:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-02 09:15:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-02 09:15:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-02 09:15:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 09:15:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-02 09:15:53,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-02 09:15:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:15:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:15:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:15:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:15:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:15:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:15:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:15:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:15:53,372 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:15:53,608 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:15:53,610 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:15:53,748 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:15:53,748 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:15:53,800 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:15:53,801 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-02 09:15:53,801 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:15:53 BoogieIcfgContainer [2024-02-02 09:15:53,801 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:15:53,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:15:53,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:15:53,805 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:15:53,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:15:52" (1/4) ... [2024-02-02 09:15:53,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ddc8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:15:53, skipping insertion in model container [2024-02-02 09:15:53,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:15:52" (2/4) ... [2024-02-02 09:15:53,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ddc8ef and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:15:53, skipping insertion in model container [2024-02-02 09:15:53,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:15:53" (3/4) ... [2024-02-02 09:15:53,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ddc8ef and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:15:53, skipping insertion in model container [2024-02-02 09:15:53,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:15:53" (4/4) ... [2024-02-02 09:15:53,807 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_1-join.i [2024-02-02 09:15:53,820 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:15:53,820 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-02-02 09:15:53,820 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:15:53,862 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-02 09:15:53,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 71 transitions, 149 flow [2024-02-02 09:15:53,922 INFO L124 PetriNetUnfolderBase]: 5/74 cut-off events. [2024-02-02 09:15:53,922 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-02 09:15:53,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 74 events. 5/74 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 35. Up to 3 conditions per place. [2024-02-02 09:15:53,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 71 transitions, 149 flow [2024-02-02 09:15:53,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 66 transitions, 138 flow [2024-02-02 09:15:53,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:15:53,950 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;@d151c4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:15:53,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-02-02 09:15:53,952 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:15:53,952 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:15:53,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:15:53,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:53,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:15:53,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-02 09:15:53,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:53,958 INFO L85 PathProgramCache]: Analyzing trace with hash 10998, now seen corresponding path program 1 times [2024-02-02 09:15:53,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:53,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059322453] [2024-02-02 09:15:53,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:53,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:54,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:54,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059322453] [2024-02-02 09:15:54,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059322453] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:54,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:54,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:15:54,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687242597] [2024-02-02 09:15:54,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:54,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:15:54,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:54,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:15:54,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:15:54,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 71 [2024-02-02 09:15:54,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-02-02 09:15:54,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:54,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 71 [2024-02-02 09:15:54,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:54,437 INFO L124 PetriNetUnfolderBase]: 35/161 cut-off events. [2024-02-02 09:15:54,437 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-02 09:15:54,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 161 events. 35/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 550 event pairs, 35 based on Foata normal form. 8/148 useless extension candidates. Maximal degree in co-relation 206. Up to 100 conditions per place. [2024-02-02 09:15:54,441 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 29 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-02-02 09:15:54,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 190 flow [2024-02-02 09:15:54,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:15:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:15:54,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-02-02 09:15:54,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197183098591549 [2024-02-02 09:15:54,454 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 138 flow. Second operand 3 states and 132 transitions. [2024-02-02 09:15:54,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 190 flow [2024-02-02 09:15:54,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:54,459 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 128 flow [2024-02-02 09:15:54,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-02-02 09:15:54,463 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -2 predicate places. [2024-02-02 09:15:54,463 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 128 flow [2024-02-02 09:15:54,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-02-02 09:15:54,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:54,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-02 09:15:54,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:15:54,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-02 09:15:54,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:54,465 INFO L85 PathProgramCache]: Analyzing trace with hash 10580495, now seen corresponding path program 1 times [2024-02-02 09:15:54,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:54,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881679362] [2024-02-02 09:15:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:54,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:54,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:54,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881679362] [2024-02-02 09:15:54,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881679362] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:54,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:54,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:15:54,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386365151] [2024-02-02 09:15:54,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:54,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:15:54,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:54,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:15:54,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:15:54,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 71 [2024-02-02 09:15:54,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-02-02 09:15:54,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:54,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 71 [2024-02-02 09:15:54,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:54,607 INFO L124 PetriNetUnfolderBase]: 30/157 cut-off events. [2024-02-02 09:15:54,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:15:54,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 157 events. 30/157 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 568 event pairs, 5 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 242. Up to 67 conditions per place. [2024-02-02 09:15:54,608 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 32 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-02-02 09:15:54,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 200 flow [2024-02-02 09:15:54,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:15:54,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:15:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-02-02 09:15:54,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197183098591549 [2024-02-02 09:15:54,610 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 128 flow. Second operand 3 states and 132 transitions. [2024-02-02 09:15:54,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 200 flow [2024-02-02 09:15:54,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:54,612 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 122 flow [2024-02-02 09:15:54,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-02-02 09:15:54,613 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -6 predicate places. [2024-02-02 09:15:54,613 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 122 flow [2024-02-02 09:15:54,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-02-02 09:15:54,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:54,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:15:54,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:15:54,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-02 09:15:54,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:54,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1577932772, now seen corresponding path program 1 times [2024-02-02 09:15:54,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:54,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718055013] [2024-02-02 09:15:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:54,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:54,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:54,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718055013] [2024-02-02 09:15:54,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718055013] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:54,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:54,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:54,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154047309] [2024-02-02 09:15:54,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:54,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:15:54,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:54,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:15:54,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:15:54,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 71 [2024-02-02 09:15:54,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-02-02 09:15:54,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:54,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 71 [2024-02-02 09:15:54,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:54,797 INFO L124 PetriNetUnfolderBase]: 30/153 cut-off events. [2024-02-02 09:15:54,798 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-02 09:15:54,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 153 events. 30/153 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 550 event pairs, 5 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 54. Up to 67 conditions per place. [2024-02-02 09:15:54,800 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 31 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-02-02 09:15:54,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 200 flow [2024-02-02 09:15:54,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:54,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-02-02 09:15:54,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647887323943662 [2024-02-02 09:15:54,802 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 122 flow. Second operand 5 states and 165 transitions. [2024-02-02 09:15:54,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 200 flow [2024-02-02 09:15:54,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:54,803 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 122 flow [2024-02-02 09:15:54,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-02-02 09:15:54,804 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-02-02 09:15:54,804 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 122 flow [2024-02-02 09:15:54,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-02-02 09:15:54,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:54,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:54,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:15:54,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-02 09:15:54,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:54,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1744921114, now seen corresponding path program 1 times [2024-02-02 09:15:54,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:54,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153867557] [2024-02-02 09:15:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:54,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:54,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:54,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153867557] [2024-02-02 09:15:54,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153867557] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:54,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:54,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:15:54,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406356213] [2024-02-02 09:15:54,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:54,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:15:54,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:54,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:15:54,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:15:54,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 71 [2024-02-02 09:15:54,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-02-02 09:15:54,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:54,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 71 [2024-02-02 09:15:54,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:54,905 INFO L124 PetriNetUnfolderBase]: 35/150 cut-off events. [2024-02-02 09:15:54,905 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-02-02 09:15:54,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 150 events. 35/150 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 516 event pairs, 35 based on Foata normal form. 2/133 useless extension candidates. Maximal degree in co-relation 172. Up to 98 conditions per place. [2024-02-02 09:15:54,906 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 26 selfloop transitions, 0 changer transitions 6/50 dead transitions. [2024-02-02 09:15:54,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 178 flow [2024-02-02 09:15:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:15:54,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:15:54,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-02-02 09:15:54,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596244131455399 [2024-02-02 09:15:54,908 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 122 flow. Second operand 3 states and 127 transitions. [2024-02-02 09:15:54,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 178 flow [2024-02-02 09:15:54,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 164 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:54,909 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 90 flow [2024-02-02 09:15:54,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-02-02 09:15:54,913 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -13 predicate places. [2024-02-02 09:15:54,913 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 90 flow [2024-02-02 09:15:54,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-02-02 09:15:54,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:54,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:54,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:15:54,914 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-02 09:15:54,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:54,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1831723593, now seen corresponding path program 1 times [2024-02-02 09:15:54,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:54,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598933835] [2024-02-02 09:15:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:54,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:55,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:55,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598933835] [2024-02-02 09:15:55,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598933835] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:55,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:55,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:15:55,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898518530] [2024-02-02 09:15:55,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:55,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:15:55,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:55,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:15:55,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:15:55,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2024-02-02 09:15:55,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 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) [2024-02-02 09:15:55,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:55,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2024-02-02 09:15:55,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:55,139 INFO L124 PetriNetUnfolderBase]: 35/162 cut-off events. [2024-02-02 09:15:55,139 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:15:55,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 162 events. 35/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 585 event pairs, 0 based on Foata normal form. 6/148 useless extension candidates. Maximal degree in co-relation 259. Up to 82 conditions per place. [2024-02-02 09:15:55,142 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 29 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-02-02 09:15:55,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 158 flow [2024-02-02 09:15:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:15:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:15:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-02-02 09:15:55,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5809859154929577 [2024-02-02 09:15:55,144 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 90 flow. Second operand 4 states and 165 transitions. [2024-02-02 09:15:55,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 158 flow [2024-02-02 09:15:55,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 158 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-02 09:15:55,147 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 90 flow [2024-02-02 09:15:55,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-02-02 09:15:55,149 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -19 predicate places. [2024-02-02 09:15:55,149 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 90 flow [2024-02-02 09:15:55,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 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) [2024-02-02 09:15:55,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:55,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:55,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:15:55,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-02 09:15:55,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:55,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1318438771, now seen corresponding path program 1 times [2024-02-02 09:15:55,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:55,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150276618] [2024-02-02 09:15:55,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:55,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:55,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:55,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150276618] [2024-02-02 09:15:55,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150276618] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:55,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:55,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:15:55,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772359911] [2024-02-02 09:15:55,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:55,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:15:55,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:55,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:15:55,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:15:55,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 71 [2024-02-02 09:15:55,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-02-02 09:15:55,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:55,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 71 [2024-02-02 09:15:55,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:55,353 INFO L124 PetriNetUnfolderBase]: 55/176 cut-off events. [2024-02-02 09:15:55,353 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-02-02 09:15:55,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 176 events. 55/176 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 555 event pairs, 5 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 324. Up to 96 conditions per place. [2024-02-02 09:15:55,354 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 37 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2024-02-02 09:15:55,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 188 flow [2024-02-02 09:15:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:15:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:15:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-02-02 09:15:55,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46830985915492956 [2024-02-02 09:15:55,355 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 90 flow. Second operand 4 states and 133 transitions. [2024-02-02 09:15:55,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 51 transitions, 188 flow [2024-02-02 09:15:55,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 185 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:55,357 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 91 flow [2024-02-02 09:15:55,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-02-02 09:15:55,359 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -19 predicate places. [2024-02-02 09:15:55,359 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 91 flow [2024-02-02 09:15:55,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-02-02 09:15:55,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:55,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:55,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:15:55,360 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-02 09:15:55,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:55,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2078070676, now seen corresponding path program 1 times [2024-02-02 09:15:55,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:55,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966053341] [2024-02-02 09:15:55,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:55,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:55,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:55,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966053341] [2024-02-02 09:15:55,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966053341] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:55,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:55,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:15:55,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046496894] [2024-02-02 09:15:55,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:55,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:15:55,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:55,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:15:55,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:15:55,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 71 [2024-02-02 09:15:55,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2024-02-02 09:15:55,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:55,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 71 [2024-02-02 09:15:55,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:55,555 INFO L124 PetriNetUnfolderBase]: 45/154 cut-off events. [2024-02-02 09:15:55,555 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-02-02 09:15:55,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 154 events. 45/154 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 450 event pairs, 5 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 292. Up to 69 conditions per place. [2024-02-02 09:15:55,556 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 35 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2024-02-02 09:15:55,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 183 flow [2024-02-02 09:15:55,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:15:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:15:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-02-02 09:15:55,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5211267605633803 [2024-02-02 09:15:55,557 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 91 flow. Second operand 4 states and 148 transitions. [2024-02-02 09:15:55,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 183 flow [2024-02-02 09:15:55,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 177 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:55,559 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 87 flow [2024-02-02 09:15:55,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-02-02 09:15:55,559 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -21 predicate places. [2024-02-02 09:15:55,559 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 87 flow [2024-02-02 09:15:55,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2024-02-02 09:15:55,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:55,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:55,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:15:55,560 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-02 09:15:55,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:55,560 INFO L85 PathProgramCache]: Analyzing trace with hash 133885295, now seen corresponding path program 1 times [2024-02-02 09:15:55,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:55,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735764127] [2024-02-02 09:15:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:55,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:55,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:55,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735764127] [2024-02-02 09:15:55,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735764127] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:55,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:55,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:55,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114204791] [2024-02-02 09:15:55,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:55,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:15:55,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:55,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:15:55,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:15:55,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2024-02-02 09:15:55,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-02-02 09:15:55,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:55,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2024-02-02 09:15:55,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:55,720 INFO L124 PetriNetUnfolderBase]: 35/117 cut-off events. [2024-02-02 09:15:55,720 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-02 09:15:55,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 117 events. 35/117 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 299 event pairs, 5 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 223. Up to 47 conditions per place. [2024-02-02 09:15:55,722 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 26 selfloop transitions, 4 changer transitions 6/47 dead transitions. [2024-02-02 09:15:55,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 175 flow [2024-02-02 09:15:55,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:15:55,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:15:55,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-02-02 09:15:55,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5950704225352113 [2024-02-02 09:15:55,723 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 87 flow. Second operand 4 states and 169 transitions. [2024-02-02 09:15:55,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 175 flow [2024-02-02 09:15:55,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 169 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:55,724 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 81 flow [2024-02-02 09:15:55,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-02-02 09:15:55,726 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -23 predicate places. [2024-02-02 09:15:55,726 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 81 flow [2024-02-02 09:15:55,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-02-02 09:15:55,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:55,727 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] [2024-02-02 09:15:55,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 09:15:55,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-02 09:15:55,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:55,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1228426077, now seen corresponding path program 1 times [2024-02-02 09:15:55,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:55,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519487798] [2024-02-02 09:15:55,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:55,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:55,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:55,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519487798] [2024-02-02 09:15:55,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519487798] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:55,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:55,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:55,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708708859] [2024-02-02 09:15:55,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:55,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:15:55,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:55,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:15:55,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:15:55,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 71 [2024-02-02 09:15:55,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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) [2024-02-02 09:15:55,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:55,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 71 [2024-02-02 09:15:55,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:55,985 INFO L124 PetriNetUnfolderBase]: 18/79 cut-off events. [2024-02-02 09:15:55,985 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-02-02 09:15:55,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 79 events. 18/79 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 142 event pairs, 15 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 153. Up to 48 conditions per place. [2024-02-02 09:15:55,985 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 22 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2024-02-02 09:15:55,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 137 flow [2024-02-02 09:15:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 202 transitions. [2024-02-02 09:15:55,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5690140845070423 [2024-02-02 09:15:55,987 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 81 flow. Second operand 5 states and 202 transitions. [2024-02-02 09:15:55,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 137 flow [2024-02-02 09:15:55,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 129 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:55,988 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 79 flow [2024-02-02 09:15:55,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-02-02 09:15:55,988 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -25 predicate places. [2024-02-02 09:15:55,988 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 79 flow [2024-02-02 09:15:55,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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) [2024-02-02 09:15:55,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:55,989 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] [2024-02-02 09:15:55,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 09:15:55,989 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-02 09:15:55,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:55,989 INFO L85 PathProgramCache]: Analyzing trace with hash 789095830, now seen corresponding path program 1 times [2024-02-02 09:15:55,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:55,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520716398] [2024-02-02 09:15:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:55,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:56,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:56,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520716398] [2024-02-02 09:15:56,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520716398] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:56,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:56,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:56,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082004331] [2024-02-02 09:15:56,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:56,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:56,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:56,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:56,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:56,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 71 [2024-02-02 09:15:56,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 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) [2024-02-02 09:15:56,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:56,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 71 [2024-02-02 09:15:56,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:56,410 INFO L124 PetriNetUnfolderBase]: 18/78 cut-off events. [2024-02-02 09:15:56,410 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-02 09:15:56,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 78 events. 18/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 141 event pairs, 15 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 146. Up to 48 conditions per place. [2024-02-02 09:15:56,410 INFO L140 encePairwiseOnDemand]: 65/71 looper letters, 21 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-02-02 09:15:56,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 135 flow [2024-02-02 09:15:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-02-02 09:15:56,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422535211267606 [2024-02-02 09:15:56,412 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 79 flow. Second operand 6 states and 231 transitions. [2024-02-02 09:15:56,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 135 flow [2024-02-02 09:15:56,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 36 transitions, 127 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:56,414 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 79 flow [2024-02-02 09:15:56,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-02-02 09:15:56,415 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -25 predicate places. [2024-02-02 09:15:56,416 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 79 flow [2024-02-02 09:15:56,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 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) [2024-02-02 09:15:56,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:56,416 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] [2024-02-02 09:15:56,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 09:15:56,417 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-02 09:15:56,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1307832691, now seen corresponding path program 1 times [2024-02-02 09:15:56,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:56,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924705768] [2024-02-02 09:15:56,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:56,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:56,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:56,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924705768] [2024-02-02 09:15:56,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924705768] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:56,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:56,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:56,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969455770] [2024-02-02 09:15:56,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:56,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:56,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:56,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:56,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:56,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 71 [2024-02-02 09:15:56,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 79 flow. Second operand has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 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) [2024-02-02 09:15:56,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:56,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 71 [2024-02-02 09:15:56,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:56,819 INFO L124 PetriNetUnfolderBase]: 18/77 cut-off events. [2024-02-02 09:15:56,820 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-02 09:15:56,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 77 events. 18/77 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 140 event pairs, 15 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 146. Up to 48 conditions per place. [2024-02-02 09:15:56,820 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 20 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-02-02 09:15:56,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 35 transitions, 135 flow [2024-02-02 09:15:56,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 265 transitions. [2024-02-02 09:15:56,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331991951710262 [2024-02-02 09:15:56,822 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 79 flow. Second operand 7 states and 265 transitions. [2024-02-02 09:15:56,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 35 transitions, 135 flow [2024-02-02 09:15:56,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 125 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:56,822 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 79 flow [2024-02-02 09:15:56,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=79, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-02-02 09:15:56,823 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -25 predicate places. [2024-02-02 09:15:56,823 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 79 flow [2024-02-02 09:15:56,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 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) [2024-02-02 09:15:56,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:56,824 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] [2024-02-02 09:15:56,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-02 09:15:56,824 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-02 09:15:56,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1598212229, now seen corresponding path program 1 times [2024-02-02 09:15:56,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:56,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895565314] [2024-02-02 09:15:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:56,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:56,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:56,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895565314] [2024-02-02 09:15:56,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895565314] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:56,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:56,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:56,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158553555] [2024-02-02 09:15:56,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:56,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:15:56,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:56,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:15:56,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:15:56,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 71 [2024-02-02 09:15:56,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-02-02 09:15:56,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:56,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 71 [2024-02-02 09:15:56,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:56,954 INFO L124 PetriNetUnfolderBase]: 18/75 cut-off events. [2024-02-02 09:15:56,954 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-02 09:15:56,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 75 events. 18/75 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 140 event pairs, 18 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 146. Up to 57 conditions per place. [2024-02-02 09:15:56,955 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-02-02 09:15:56,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 30 transitions, 123 flow [2024-02-02 09:15:56,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:56,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-02-02 09:15:56,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4788732394366197 [2024-02-02 09:15:56,956 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 79 flow. Second operand 5 states and 170 transitions. [2024-02-02 09:15:56,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 30 transitions, 123 flow [2024-02-02 09:15:56,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 111 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 09:15:56,957 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-02-02 09:15:56,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-02-02 09:15:56,958 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -29 predicate places. [2024-02-02 09:15:56,958 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-02-02 09:15:56,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-02-02 09:15:56,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 28 remaining) [2024-02-02 09:15:56,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 28 remaining) [2024-02-02 09:15:56,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 28 remaining) [2024-02-02 09:15:56,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONERROR_FUNCTION (24 of 28 remaining) [2024-02-02 09:15:56,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 28 remaining) [2024-02-02 09:15:56,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 28 remaining) [2024-02-02 09:15:56,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 28 remaining) [2024-02-02 09:15:56,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 28 remaining) [2024-02-02 09:15:56,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 28 remaining) [2024-02-02 09:15:56,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (18 of 28 remaining) [2024-02-02 09:15:56,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 28 remaining) [2024-02-02 09:15:56,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 28 remaining) [2024-02-02 09:15:56,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 28 remaining) [2024-02-02 09:15:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 28 remaining) [2024-02-02 09:15:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (13 of 28 remaining) [2024-02-02 09:15:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 28 remaining) [2024-02-02 09:15:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 28 remaining) [2024-02-02 09:15:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 28 remaining) [2024-02-02 09:15:56,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 28 remaining) [2024-02-02 09:15:56,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 28 remaining) [2024-02-02 09:15:56,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION (7 of 28 remaining) [2024-02-02 09:15:56,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 28 remaining) [2024-02-02 09:15:56,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 28 remaining) [2024-02-02 09:15:56,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 28 remaining) [2024-02-02 09:15:56,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 28 remaining) [2024-02-02 09:15:56,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONERROR_FUNCTION (2 of 28 remaining) [2024-02-02 09:15:56,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 28 remaining) [2024-02-02 09:15:56,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 28 remaining) [2024-02-02 09:15:56,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-02 09:15:56,966 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:56,971 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-02 09:15:56,972 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 09:15:56,977 INFO L503 ceAbstractionStarter]: Automizer considered 17 witness invariants [2024-02-02 09:15:56,977 INFO L504 ceAbstractionStarter]: WitnessConsidered=17 [2024-02-02 09:15:56,978 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:15:56 BasicIcfg [2024-02-02 09:15:56,978 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 09:15:56,979 INFO L158 Benchmark]: Toolchain (without parser) took 4720.58ms. Allocated memory was 157.3MB in the beginning and 243.3MB in the end (delta: 86.0MB). Free memory was 117.7MB in the beginning and 119.2MB in the end (delta: -1.5MB). Peak memory consumption was 83.4MB. Max. memory is 16.1GB. [2024-02-02 09:15:56,981 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:15:56,981 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 157.3MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:15:56,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 852.86ms. Allocated memory is still 157.3MB. Free memory was 117.7MB in the beginning and 60.0MB in the end (delta: 57.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-02-02 09:15:56,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.40ms. Allocated memory is still 157.3MB. Free memory was 60.0MB in the beginning and 55.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-02 09:15:56,981 INFO L158 Benchmark]: Boogie Preprocessor took 124.99ms. Allocated memory is still 157.3MB. Free memory was 55.8MB in the beginning and 122.3MB in the end (delta: -66.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-02-02 09:15:56,982 INFO L158 Benchmark]: RCFGBuilder took 509.45ms. Allocated memory is still 157.3MB. Free memory was 122.3MB in the beginning and 85.8MB in the end (delta: 36.5MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-02-02 09:15:56,982 INFO L158 Benchmark]: TraceAbstraction took 3175.45ms. Allocated memory was 157.3MB in the beginning and 243.3MB in the end (delta: 86.0MB). Free memory was 85.8MB in the beginning and 119.2MB in the end (delta: -33.4MB). Peak memory consumption was 54.7MB. Max. memory is 16.1GB. [2024-02-02 09:15:56,983 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 157.3MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 852.86ms. Allocated memory is still 157.3MB. Free memory was 117.7MB in the beginning and 60.0MB in the end (delta: 57.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.40ms. Allocated memory is still 157.3MB. Free memory was 60.0MB in the beginning and 55.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 124.99ms. Allocated memory is still 157.3MB. Free memory was 55.8MB in the beginning and 122.3MB in the end (delta: -66.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 509.45ms. Allocated memory is still 157.3MB. Free memory was 122.3MB in the beginning and 85.8MB in the end (delta: 36.5MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3175.45ms. Allocated memory was 157.3MB in the beginning and 243.3MB in the end (delta: 86.0MB). Free memory was 85.8MB in the beginning and 119.2MB in the end (delta: -33.4MB). Peak memory consumption was 54.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1698]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1699]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: 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: 1701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1705]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1706]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1707]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: 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: 1708]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1709]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1712]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1713]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: 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: 1714]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1715]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1720]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1721]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1722]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 87 locations, 28 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 547 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 343 mSDsluCounter, 97 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1188 IncrementalHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 21 mSDtfsCounter, 1188 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=0, InterpolantAutomatonStates: 53, 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, 1.3s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 190 ConstructedInterpolants, 0 QuantifiedInterpolants, 457 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 21 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-02 09:15:57,022 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