./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe011_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe011_tso.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-958ec4d-m [2024-02-07 14:24:21,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:24:21,824 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:24:21,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:24:21,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:24:21,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:24:21,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:24:21,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:24:21,862 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:24:21,866 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:24:21,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:24:21,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:24:21,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:24:21,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:24:21,869 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:24:21,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:24:21,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:24:21,870 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:24:21,871 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:24:21,871 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:24:21,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:24:21,872 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:24:21,872 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:24:21,872 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:24:21,873 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:24:21,873 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:24:21,873 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:24:21,873 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:24:21,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:24:21,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:24:21,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:24:21,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:24:21,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:21,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:24:21,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:24:21,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:24:21,877 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:24:21,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:24:21,877 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:24:21,878 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:24:21,878 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:24:21,878 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:24:21,878 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:24:21,879 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:24:22,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:24:22,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:24:22,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:24:22,177 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:24:22,177 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:24:22,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2024-02-07 14:24:23,306 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:24:23,581 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:24:23,582 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2024-02-07 14:24:23,605 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93de34fe9/4e30ac69b73840618f9827f28e389967/FLAG237981478 [2024-02-07 14:24:23,620 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93de34fe9/4e30ac69b73840618f9827f28e389967 [2024-02-07 14:24:23,622 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:24:23,623 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:24:23,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe011_tso.yml/witness.yml [2024-02-07 14:24:23,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:24:23,687 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:24:23,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:23,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:24:23,709 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:24:23,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:23" (1/2) ... [2024-02-07 14:24:23,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e02fe44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:23, skipping insertion in model container [2024-02-07 14:24:23,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:23" (1/2) ... [2024-02-07 14:24:23,711 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47e73f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:23, skipping insertion in model container [2024-02-07 14:24:23,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:23" (2/2) ... [2024-02-07 14:24:23,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e02fe44 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:23, skipping insertion in model container [2024-02-07 14:24:23,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:23" (2/2) ... [2024-02-07 14:24:23,712 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:24:23,840 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:24:23,842 INFO L76 edCorrectnessWitness]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 14:24:23,842 INFO L76 edCorrectnessWitness]: Location invariant before [L789-L789] ((((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 1)) && (x == 2)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (z == 2 || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2))) [2024-02-07 14:24:23,842 INFO L76 edCorrectnessWitness]: Location invariant before [L724-L724] z == 2 [2024-02-07 14:24:23,842 INFO L76 edCorrectnessWitness]: Location invariant before [L791-L791] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:23,842 INFO L76 edCorrectnessWitness]: Location invariant before [L732-L732] 1 <= __unbuffered_cnt [2024-02-07 14:24:23,843 INFO L76 edCorrectnessWitness]: Location invariant before [L785-L785] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:23,843 INFO L76 edCorrectnessWitness]: Location invariant before [L757-L757] z == 1 [2024-02-07 14:24:23,843 INFO L76 edCorrectnessWitness]: Location invariant before [L753-L753] ((0 <= y) && (y <= 1)) && (y == 0 || y == 1) [2024-02-07 14:24:23,843 INFO L76 edCorrectnessWitness]: Location invariant before [L761-L761] 0 <= __unbuffered_cnt [2024-02-07 14:24:23,843 INFO L76 edCorrectnessWitness]: Location invariant before [L762-L762] 1 <= __unbuffered_cnt [2024-02-07 14:24:23,844 INFO L76 edCorrectnessWitness]: Location invariant before [L739-L739] x == 2 [2024-02-07 14:24:23,844 INFO L76 edCorrectnessWitness]: Location invariant before [L727-L727] x == 1 [2024-02-07 14:24:23,844 INFO L76 edCorrectnessWitness]: Location invariant before [L731-L731] 0 <= __unbuffered_cnt [2024-02-07 14:24:23,844 INFO L76 edCorrectnessWitness]: Location invariant before [L783-L783] 0 <= __unbuffered_cnt [2024-02-07 14:24:23,844 INFO L76 edCorrectnessWitness]: Location invariant before [L746-L746] 0 <= __unbuffered_cnt [2024-02-07 14:24:23,844 INFO L76 edCorrectnessWitness]: Location invariant before [L742-L742] y == 1 [2024-02-07 14:24:23,844 INFO L76 edCorrectnessWitness]: Location invariant before [L754-L754] ((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) [2024-02-07 14:24:23,844 INFO L76 edCorrectnessWitness]: Location invariant before [L784-L784] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:23,844 INFO L76 edCorrectnessWitness]: Location invariant before [L747-L747] 1 <= __unbuffered_cnt [2024-02-07 14:24:23,844 INFO L76 edCorrectnessWitness]: Location invariant before [L790-L790] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:23,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:24:24,078 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i[945,958] [2024-02-07 14:24:24,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:24,202 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 14:24:24,231 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i[945,958] 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 Start Parsing Local Start Parsing Local [2024-02-07 14:24:24,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:24,305 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:24:24,306 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24 WrapperNode [2024-02-07 14:24:24,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:24,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:24,307 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:24:24,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:24:24,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24" (1/1) ... [2024-02-07 14:24:24,322 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24" (1/1) ... [2024-02-07 14:24:24,338 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2024-02-07 14:24:24,339 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:24,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:24:24,343 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:24:24,343 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:24:24,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24" (1/1) ... [2024-02-07 14:24:24,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24" (1/1) ... [2024-02-07 14:24:24,367 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24" (1/1) ... [2024-02-07 14:24:24,382 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-02-07 14:24:24,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24" (1/1) ... [2024-02-07 14:24:24,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24" (1/1) ... [2024-02-07 14:24:24,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24" (1/1) ... [2024-02-07 14:24:24,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24" (1/1) ... [2024-02-07 14:24:24,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24" (1/1) ... [2024-02-07 14:24:24,411 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24" (1/1) ... [2024-02-07 14:24:24,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:24:24,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:24:24,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:24:24,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:24:24,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24" (1/1) ... [2024-02-07 14:24:24,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:24,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:24:24,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 14:24:24,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 14:24:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:24:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:24:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:24:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:24:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:24:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:24:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:24:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:24:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 14:24:24,504 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 14:24:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 14:24:24,504 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 14:24:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-02-07 14:24:24,504 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-02-07 14:24:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:24:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:24:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:24:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:24:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:24:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:24:24,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:24:24,507 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:24:24,627 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:24:24,629 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:24:24,808 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:24:24,808 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:24:24,894 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:24:24,894 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:24:24,894 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:24 BoogieIcfgContainer [2024-02-07 14:24:24,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:24:24,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:24:24,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:24:24,898 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:24:24,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:24:23" (1/4) ... [2024-02-07 14:24:24,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b5e530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:24:24, skipping insertion in model container [2024-02-07 14:24:24,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:23" (2/4) ... [2024-02-07 14:24:24,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b5e530 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:24, skipping insertion in model container [2024-02-07 14:24:24,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24" (3/4) ... [2024-02-07 14:24:24,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b5e530 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:24, skipping insertion in model container [2024-02-07 14:24:24,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:24" (4/4) ... [2024-02-07 14:24:24,901 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2024-02-07 14:24:24,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:24:24,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-02-07 14:24:24,914 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:24:24,961 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 14:24:25,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 130 flow [2024-02-07 14:24:25,045 INFO L124 PetriNetUnfolderBase]: 1/56 cut-off events. [2024-02-07 14:24:25,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:25,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 157 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2024-02-07 14:24:25,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 59 transitions, 130 flow [2024-02-07 14:24:25,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2024-02-07 14:24:25,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:24:25,071 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;@67737ad2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:24:25,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-02-07 14:24:25,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:24:25,077 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-02-07 14:24:25,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:25,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:25,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 14:24:25,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 14:24:25,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:25,085 INFO L85 PathProgramCache]: Analyzing trace with hash 9237091, now seen corresponding path program 1 times [2024-02-07 14:24:25,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:25,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193250363] [2024-02-07 14:24:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:25,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:25,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:25,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:25,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193250363] [2024-02-07 14:24:25,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193250363] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:25,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:25,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:25,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291740089] [2024-02-07 14:24:25,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:25,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-07 14:24:25,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:25,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-07 14:24:25,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-07 14:24:25,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-02-07 14:24:25,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:25,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:25,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-02-07 14:24:25,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:26,128 INFO L124 PetriNetUnfolderBase]: 5603/9828 cut-off events. [2024-02-07 14:24:26,128 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-02-07 14:24:26,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17875 conditions, 9828 events. 5603/9828 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 76687 event pairs, 5603 based on Foata normal form. 252/7524 useless extension candidates. Maximal degree in co-relation 17864. Up to 7957 conditions per place. [2024-02-07 14:24:26,188 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 30 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2024-02-07 14:24:26,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 157 flow [2024-02-07 14:24:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-07 14:24:26,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-07 14:24:26,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 76 transitions. [2024-02-07 14:24:26,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2024-02-07 14:24:26,199 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 2 states and 76 transitions. [2024-02-07 14:24:26,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 157 flow [2024-02-07 14:24:26,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 44 transitions, 154 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:26,208 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 94 flow [2024-02-07 14:24:26,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-02-07 14:24:26,214 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -13 predicate places. [2024-02-07 14:24:26,214 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 94 flow [2024-02-07 14:24:26,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:26,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:26,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:26,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:24:26,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 14:24:26,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:26,216 INFO L85 PathProgramCache]: Analyzing trace with hash 304601740, now seen corresponding path program 1 times [2024-02-07 14:24:26,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:26,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494314598] [2024-02-07 14:24:26,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:26,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:26,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:26,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494314598] [2024-02-07 14:24:26,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494314598] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:26,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:26,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:26,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801392131] [2024-02-07 14:24:26,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:26,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:26,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:26,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:26,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-02-07 14:24:26,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:26,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:26,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-02-07 14:24:26,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:26,745 INFO L124 PetriNetUnfolderBase]: 4321/6560 cut-off events. [2024-02-07 14:24:26,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:26,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12859 conditions, 6560 events. 4321/6560 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 40056 event pairs, 1451 based on Foata normal form. 0/5239 useless extension candidates. Maximal degree in co-relation 12856. Up to 5321 conditions per place. [2024-02-07 14:24:26,773 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 47 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2024-02-07 14:24:26,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 65 transitions, 242 flow [2024-02-07 14:24:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-02-07 14:24:26,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5988700564971752 [2024-02-07 14:24:26,775 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 94 flow. Second operand 3 states and 106 transitions. [2024-02-07 14:24:26,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 65 transitions, 242 flow [2024-02-07 14:24:26,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:24:26,777 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 126 flow [2024-02-07 14:24:26,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-02-07 14:24:26,778 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -10 predicate places. [2024-02-07 14:24:26,778 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 126 flow [2024-02-07 14:24:26,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:26,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:26,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:26,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:24:26,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 14:24:26,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:26,779 INFO L85 PathProgramCache]: Analyzing trace with hash -462913884, now seen corresponding path program 1 times [2024-02-07 14:24:26,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:26,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501552063] [2024-02-07 14:24:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:26,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:26,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:26,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501552063] [2024-02-07 14:24:26,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501552063] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:26,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:26,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:26,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955046298] [2024-02-07 14:24:26,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:26,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:26,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:26,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:26,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:26,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-02-07 14:24:26,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:26,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:26,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-02-07 14:24:26,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:27,215 INFO L124 PetriNetUnfolderBase]: 4097/6549 cut-off events. [2024-02-07 14:24:27,216 INFO L125 PetriNetUnfolderBase]: For 677/677 co-relation queries the response was YES. [2024-02-07 14:24:27,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14403 conditions, 6549 events. 4097/6549 cut-off events. For 677/677 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 43432 event pairs, 1481 based on Foata normal form. 0/5474 useless extension candidates. Maximal degree in co-relation 14398. Up to 4363 conditions per place. [2024-02-07 14:24:27,284 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 53 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2024-02-07 14:24:27,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 69 transitions, 298 flow [2024-02-07 14:24:27,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:27,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:27,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-02-07 14:24:27,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-02-07 14:24:27,286 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 126 flow. Second operand 3 states and 102 transitions. [2024-02-07 14:24:27,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 69 transitions, 298 flow [2024-02-07 14:24:27,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 69 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:27,288 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 130 flow [2024-02-07 14:24:27,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-02-07 14:24:27,288 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -8 predicate places. [2024-02-07 14:24:27,289 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 130 flow [2024-02-07 14:24:27,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:27,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:27,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:27,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:24:27,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 14:24:27,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:27,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1465490519, now seen corresponding path program 1 times [2024-02-07 14:24:27,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:27,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360909612] [2024-02-07 14:24:27,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:27,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:27,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:27,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360909612] [2024-02-07 14:24:27,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360909612] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:27,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:27,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:27,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709411412] [2024-02-07 14:24:27,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:27,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:27,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:27,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:27,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:27,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-02-07 14:24:27,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:27,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:27,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-02-07 14:24:27,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:27,811 INFO L124 PetriNetUnfolderBase]: 4097/7067 cut-off events. [2024-02-07 14:24:27,812 INFO L125 PetriNetUnfolderBase]: For 1211/1215 co-relation queries the response was YES. [2024-02-07 14:24:27,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15353 conditions, 7067 events. 4097/7067 cut-off events. For 1211/1215 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 51459 event pairs, 3823 based on Foata normal form. 0/5838 useless extension candidates. Maximal degree in co-relation 15347. Up to 5918 conditions per place. [2024-02-07 14:24:27,838 INFO L140 encePairwiseOnDemand]: 57/59 looper letters, 32 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2024-02-07 14:24:27,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 46 transitions, 194 flow [2024-02-07 14:24:27,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:27,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-02-07 14:24:27,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463276836158192 [2024-02-07 14:24:27,840 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 130 flow. Second operand 3 states and 79 transitions. [2024-02-07 14:24:27,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 46 transitions, 194 flow [2024-02-07 14:24:27,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 46 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:27,842 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 126 flow [2024-02-07 14:24:27,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-02-07 14:24:27,842 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -9 predicate places. [2024-02-07 14:24:27,843 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 126 flow [2024-02-07 14:24:27,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:27,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:27,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:27,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:24:27,843 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 14:24:27,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:27,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1999823327, now seen corresponding path program 1 times [2024-02-07 14:24:27,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:27,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946015717] [2024-02-07 14:24:27,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:27,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:27,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:27,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946015717] [2024-02-07 14:24:27,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946015717] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:27,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:27,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:27,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802386224] [2024-02-07 14:24:27,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:27,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:27,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:27,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:27,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:27,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-02-07 14:24:27,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:27,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:27,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-02-07 14:24:27,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:28,237 INFO L124 PetriNetUnfolderBase]: 3702/5966 cut-off events. [2024-02-07 14:24:28,237 INFO L125 PetriNetUnfolderBase]: For 727/731 co-relation queries the response was YES. [2024-02-07 14:24:28,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13139 conditions, 5966 events. 3702/5966 cut-off events. For 727/731 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 39037 event pairs, 1341 based on Foata normal form. 172/5286 useless extension candidates. Maximal degree in co-relation 13133. Up to 3799 conditions per place. [2024-02-07 14:24:28,257 INFO L140 encePairwiseOnDemand]: 57/59 looper letters, 53 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2024-02-07 14:24:28,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 290 flow [2024-02-07 14:24:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:28,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-02-07 14:24:28,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706214689265536 [2024-02-07 14:24:28,259 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 126 flow. Second operand 3 states and 101 transitions. [2024-02-07 14:24:28,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 290 flow [2024-02-07 14:24:28,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:28,261 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 121 flow [2024-02-07 14:24:28,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-02-07 14:24:28,261 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -10 predicate places. [2024-02-07 14:24:28,262 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 121 flow [2024-02-07 14:24:28,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:28,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:28,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:28,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:24:28,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 14:24:28,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:28,263 INFO L85 PathProgramCache]: Analyzing trace with hash 412893514, now seen corresponding path program 1 times [2024-02-07 14:24:28,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:28,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542240667] [2024-02-07 14:24:28,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:28,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:28,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:28,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542240667] [2024-02-07 14:24:28,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542240667] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:28,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:28,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:24:28,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187213138] [2024-02-07 14:24:28,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:28,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:24:28,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:28,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:24:28,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:24:28,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-02-07 14:24:28,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:28,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:28,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-02-07 14:24:28,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:28,661 INFO L124 PetriNetUnfolderBase]: 3493/6279 cut-off events. [2024-02-07 14:24:28,661 INFO L125 PetriNetUnfolderBase]: For 823/823 co-relation queries the response was YES. [2024-02-07 14:24:28,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13219 conditions, 6279 events. 3493/6279 cut-off events. For 823/823 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 46341 event pairs, 597 based on Foata normal form. 179/5382 useless extension candidates. Maximal degree in co-relation 13214. Up to 3001 conditions per place. [2024-02-07 14:24:28,735 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 54 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2024-02-07 14:24:28,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 313 flow [2024-02-07 14:24:28,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:24:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:24:28,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-02-07 14:24:28,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296610169491526 [2024-02-07 14:24:28,737 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 121 flow. Second operand 4 states and 125 transitions. [2024-02-07 14:24:28,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 313 flow [2024-02-07 14:24:28,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 72 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:28,738 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 146 flow [2024-02-07 14:24:28,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-02-07 14:24:28,739 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -6 predicate places. [2024-02-07 14:24:28,739 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 146 flow [2024-02-07 14:24:28,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:28,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:28,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:28,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:24:28,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 14:24:28,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash -125461527, now seen corresponding path program 1 times [2024-02-07 14:24:28,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:28,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370686961] [2024-02-07 14:24:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:28,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:28,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:28,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370686961] [2024-02-07 14:24:28,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370686961] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:28,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:28,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:28,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699860193] [2024-02-07 14:24:28,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:28,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:28,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:28,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:28,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:28,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-02-07 14:24:28,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:28,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:28,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-02-07 14:24:28,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:28,955 INFO L124 PetriNetUnfolderBase]: 2080/3778 cut-off events. [2024-02-07 14:24:28,955 INFO L125 PetriNetUnfolderBase]: For 1107/1107 co-relation queries the response was YES. [2024-02-07 14:24:28,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8279 conditions, 3778 events. 2080/3778 cut-off events. For 1107/1107 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 25196 event pairs, 864 based on Foata normal form. 98/3570 useless extension candidates. Maximal degree in co-relation 8272. Up to 2834 conditions per place. [2024-02-07 14:24:28,970 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 35 selfloop transitions, 3 changer transitions 2/53 dead transitions. [2024-02-07 14:24:28,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 237 flow [2024-02-07 14:24:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-02-07 14:24:28,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536723163841808 [2024-02-07 14:24:28,972 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 146 flow. Second operand 3 states and 95 transitions. [2024-02-07 14:24:28,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 237 flow [2024-02-07 14:24:28,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 231 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:28,974 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 124 flow [2024-02-07 14:24:28,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2024-02-07 14:24:28,974 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -10 predicate places. [2024-02-07 14:24:28,975 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 124 flow [2024-02-07 14:24:28,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:28,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:28,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:28,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:24:28,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 14:24:28,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash 134355528, now seen corresponding path program 1 times [2024-02-07 14:24:28,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:28,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102493519] [2024-02-07 14:24:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:29,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:29,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102493519] [2024-02-07 14:24:29,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102493519] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:29,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:29,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:29,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822069624] [2024-02-07 14:24:29,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:29,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:24:29,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:29,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:24:29,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:24:29,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-02-07 14:24:29,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:29,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:29,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-02-07 14:24:29,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:29,242 INFO L124 PetriNetUnfolderBase]: 1159/2139 cut-off events. [2024-02-07 14:24:29,242 INFO L125 PetriNetUnfolderBase]: For 765/765 co-relation queries the response was YES. [2024-02-07 14:24:29,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4764 conditions, 2139 events. 1159/2139 cut-off events. For 765/765 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 12351 event pairs, 149 based on Foata normal form. 98/2093 useless extension candidates. Maximal degree in co-relation 4757. Up to 641 conditions per place. [2024-02-07 14:24:29,250 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 57 selfloop transitions, 8 changer transitions 1/79 dead transitions. [2024-02-07 14:24:29,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 79 transitions, 357 flow [2024-02-07 14:24:29,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:24:29,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:24:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-02-07 14:24:29,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016949152542373 [2024-02-07 14:24:29,253 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 124 flow. Second operand 5 states and 148 transitions. [2024-02-07 14:24:29,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 79 transitions, 357 flow [2024-02-07 14:24:29,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 79 transitions, 341 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:29,257 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 157 flow [2024-02-07 14:24:29,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2024-02-07 14:24:29,259 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -8 predicate places. [2024-02-07 14:24:29,259 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 157 flow [2024-02-07 14:24:29,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:29,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:29,260 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] [2024-02-07 14:24:29,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:24:29,260 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 14:24:29,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:29,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1795997098, now seen corresponding path program 1 times [2024-02-07 14:24:29,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:29,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472981175] [2024-02-07 14:24:29,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:29,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:29,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:29,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472981175] [2024-02-07 14:24:29,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472981175] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:29,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:29,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:29,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285568896] [2024-02-07 14:24:29,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:29,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:29,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:29,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:29,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:29,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-02-07 14:24:29,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:29,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:29,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-02-07 14:24:29,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:29,571 INFO L124 PetriNetUnfolderBase]: 700/1194 cut-off events. [2024-02-07 14:24:29,571 INFO L125 PetriNetUnfolderBase]: For 872/872 co-relation queries the response was YES. [2024-02-07 14:24:29,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 1194 events. 700/1194 cut-off events. For 872/872 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5368 event pairs, 128 based on Foata normal form. 44/1202 useless extension candidates. Maximal degree in co-relation 3106. Up to 378 conditions per place. [2024-02-07 14:24:29,576 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 49 selfloop transitions, 11 changer transitions 1/74 dead transitions. [2024-02-07 14:24:29,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 74 transitions, 353 flow [2024-02-07 14:24:29,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-02-07 14:24:29,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4491525423728814 [2024-02-07 14:24:29,578 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 157 flow. Second operand 6 states and 159 transitions. [2024-02-07 14:24:29,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 74 transitions, 353 flow [2024-02-07 14:24:29,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 328 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:29,583 INFO L231 Difference]: Finished difference. Result has 60 places, 43 transitions, 171 flow [2024-02-07 14:24:29,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=171, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2024-02-07 14:24:29,584 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -5 predicate places. [2024-02-07 14:24:29,584 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 171 flow [2024-02-07 14:24:29,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:29,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:29,585 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] [2024-02-07 14:24:29,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:24:29,585 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-02-07 14:24:29,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:29,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1333646398, now seen corresponding path program 1 times [2024-02-07 14:24:29,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:29,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727174748] [2024-02-07 14:24:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:29,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:24:29,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:24:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:24:29,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:24:29,632 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:24:29,632 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 37 remaining) [2024-02-07 14:24:29,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 37 remaining) [2024-02-07 14:24:29,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 37 remaining) [2024-02-07 14:24:29,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 37 remaining) [2024-02-07 14:24:29,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 37 remaining) [2024-02-07 14:24:29,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 37 remaining) [2024-02-07 14:24:29,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 37 remaining) [2024-02-07 14:24:29,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 37 remaining) [2024-02-07 14:24:29,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 37 remaining) [2024-02-07 14:24:29,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 37 remaining) [2024-02-07 14:24:29,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 37 remaining) [2024-02-07 14:24:29,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 37 remaining) [2024-02-07 14:24:29,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 37 remaining) [2024-02-07 14:24:29,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 37 remaining) [2024-02-07 14:24:29,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 37 remaining) [2024-02-07 14:24:29,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 37 remaining) [2024-02-07 14:24:29,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 37 remaining) [2024-02-07 14:24:29,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 37 remaining) [2024-02-07 14:24:29,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 37 remaining) [2024-02-07 14:24:29,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 37 remaining) [2024-02-07 14:24:29,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (16 of 37 remaining) [2024-02-07 14:24:29,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 37 remaining) [2024-02-07 14:24:29,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 37 remaining) [2024-02-07 14:24:29,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 37 remaining) [2024-02-07 14:24:29,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 37 remaining) [2024-02-07 14:24:29,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 37 remaining) [2024-02-07 14:24:29,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 37 remaining) [2024-02-07 14:24:29,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 37 remaining) [2024-02-07 14:24:29,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 37 remaining) [2024-02-07 14:24:29,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 37 remaining) [2024-02-07 14:24:29,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 37 remaining) [2024-02-07 14:24:29,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 37 remaining) [2024-02-07 14:24:29,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 37 remaining) [2024-02-07 14:24:29,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 37 remaining) [2024-02-07 14:24:29,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 37 remaining) [2024-02-07 14:24:29,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 37 remaining) [2024-02-07 14:24:29,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 37 remaining) [2024-02-07 14:24:29,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:24:29,640 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:29,645 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:24:29,645 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:24:29,672 INFO L503 ceAbstractionStarter]: Automizer considered 20 witness invariants [2024-02-07 14:24:29,672 INFO L504 ceAbstractionStarter]: WitnessConsidered=20 [2024-02-07 14:24:29,672 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:24:29 BasicIcfg [2024-02-07 14:24:29,673 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:24:29,673 INFO L158 Benchmark]: Toolchain (without parser) took 5985.95ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 65.6MB in the beginning and 982.7MB in the end (delta: -917.1MB). Peak memory consumption was 180.4MB. Max. memory is 16.1GB. [2024-02-07 14:24:29,673 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:24:29,673 INFO L158 Benchmark]: Witness Parser took 4.17ms. Allocated memory is still 142.6MB. Free memory was 69.0MB in the beginning and 68.9MB in the end (delta: 121.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:24:29,674 INFO L158 Benchmark]: CACSL2BoogieTranslator took 618.45ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 65.5MB in the beginning and 145.5MB in the end (delta: -80.0MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2024-02-07 14:24:29,674 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.59ms. Allocated memory is still 199.2MB. Free memory was 145.5MB in the beginning and 143.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:24:29,674 INFO L158 Benchmark]: Boogie Preprocessor took 71.00ms. Allocated memory is still 199.2MB. Free memory was 143.5MB in the beginning and 141.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:24:29,674 INFO L158 Benchmark]: RCFGBuilder took 480.97ms. Allocated memory is still 199.2MB. Free memory was 141.4MB in the beginning and 108.9MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-02-07 14:24:29,675 INFO L158 Benchmark]: TraceAbstraction took 4776.70ms. Allocated memory was 199.2MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 108.9MB in the beginning and 982.7MB in the end (delta: -873.8MB). Peak memory consumption was 164.3MB. Max. memory is 16.1GB. [2024-02-07 14:24:29,676 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 4.17ms. Allocated memory is still 142.6MB. Free memory was 69.0MB in the beginning and 68.9MB in the end (delta: 121.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 618.45ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 65.5MB in the beginning and 145.5MB in the end (delta: -80.0MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.59ms. Allocated memory is still 199.2MB. Free memory was 145.5MB in the beginning and 143.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 71.00ms. Allocated memory is still 199.2MB. Free memory was 143.5MB in the beginning and 141.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 480.97ms. Allocated memory is still 199.2MB. Free memory was 141.4MB in the beginning and 108.9MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4776.70ms. Allocated memory was 199.2MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 108.9MB in the beginning and 982.7MB in the end (delta: -873.8MB). Peak memory consumption was 164.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 789]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L712] 0 _Bool main$tmp_guard0; [L713] 0 _Bool main$tmp_guard1; [L715] 0 int x = 0; [L717] 0 int y = 0; [L719] 0 int z = 0; [L776] 0 pthread_t t2043; [L777] FCALL, FORK 0 pthread_create(&t2043, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2043={5:0}, x=0, y=0, z=0] [L723] 1 z = 2 [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[z],IntegerLiteral[2]]]] VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=2] [L778] 0 pthread_t t2044; [L779] FCALL, FORK 0 pthread_create(&t2044, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2043={5:0}, t2044={6:0}, x=0, y=0, z=2] [L738] 2 x = 2 [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]] VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=2, y=0, z=2] [L726] 1 x = 1 [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0, z=2] [L780] 0 pthread_t t2045; [L781] FCALL, FORK 0 pthread_create(&t2045, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2043={5:0}, t2044={6:0}, t2045={3:0}, x=1, y=0, z=2] [L753] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L753] 3 __unbuffered_p2_EAX = y [L754] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0, z=2] [L741] 2 y = 1 [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=2] [L756] 3 z = 1 [L757] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[z],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=1] [L731] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L731] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L732] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=1, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=1] [L746] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L746] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L747] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=2, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=1] [L761] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L761] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L762] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=1] [L783] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L783] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L784] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2043={5:0}, t2044={6:0}, t2045={3:0}, x=1, y=1, z=1] [L785] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]]] [L785] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L785] RET 0 assume_abort_if_not(main$tmp_guard0) [L789] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[z],IntegerLiteral[2]],BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[z]],BinaryExpression[COMPLEQ,IdentifierExpression[z],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[z],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[z],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[z],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[z],IntegerLiteral[2]]]]]]]] VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2043={5:0}, t2044={6:0}, t2045={3:0}, x=1, y=1, z=1] - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 742]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 753]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 754]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 757]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 791]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 96 locations, 37 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: 4.6s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 321 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 320 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 541 IncrementalHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 1 mSDtfsCounter, 541 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=9, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 235 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-07 14:24:29,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE