./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe013_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/safe013_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/safe013_tso.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe013_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 14:24:22,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:24:22,472 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:24:22,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:24:22,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:24:22,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:24:22,504 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:24:22,505 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:24:22,505 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:24:22,512 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:24:22,512 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:24:22,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:24:22,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:24:22,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:24:22,513 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:24:22,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:24:22,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:24:22,514 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:24:22,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:24:22,514 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:24:22,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:24:22,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:24:22,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:24:22,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:24:22,515 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:24:22,516 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:24:22,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:24:22,516 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:24:22,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:24:22,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:24:22,518 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:24:22,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:24:22,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:22,518 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:24:22,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:24:22,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:24:22,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:24:22,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:24:22,519 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:24:22,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:24:22,519 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:24:22,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:24:22,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:24:22,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:24:22,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:24:22,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:24:22,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:24:22,773 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:24:22,774 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:24:22,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2024-02-07 14:24:23,772 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:24:24,010 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:24:24,011 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2024-02-07 14:24:24,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ac503648/e6df3169afed4acaadafdf57f6b4fdd1/FLAGcbe3fe502 [2024-02-07 14:24:24,039 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ac503648/e6df3169afed4acaadafdf57f6b4fdd1 [2024-02-07 14:24:24,041 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:24:24,042 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:24:24,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe013_tso.yml/witness.yml [2024-02-07 14:24:24,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:24:24,108 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:24:24,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:24,109 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:24:24,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:24:24,113 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:24" (1/2) ... [2024-02-07 14:24:24,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e2e967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:24, skipping insertion in model container [2024-02-07 14:24:24,114 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:24" (1/2) ... [2024-02-07 14:24:24,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ddfd861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:24, skipping insertion in model container [2024-02-07 14:24:24,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:24" (2/2) ... [2024-02-07 14:24:24,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e2e967 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:24, skipping insertion in model container [2024-02-07 14:24:24,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:24" (2/2) ... [2024-02-07 14:24:24,116 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:24:24,181 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:24:24,182 INFO L76 edCorrectnessWitness]: Location invariant before [L795-L795] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:24,182 INFO L76 edCorrectnessWitness]: Location invariant before [L787-L787] 0 <= __unbuffered_cnt [2024-02-07 14:24:24,182 INFO L76 edCorrectnessWitness]: Location invariant before [L788-L788] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:24,182 INFO L76 edCorrectnessWitness]: Location invariant before [L766-L766] 1 <= __unbuffered_cnt [2024-02-07 14:24:24,183 INFO L76 edCorrectnessWitness]: Location invariant before [L743-L743] x == 1 [2024-02-07 14:24:24,183 INFO L76 edCorrectnessWitness]: Location invariant before [L757-L757] ((0 <= y) && (y <= 1)) && (y == 0 || y == 1) [2024-02-07 14:24:24,183 INFO L76 edCorrectnessWitness]: Location invariant before [L750-L750] 0 <= __unbuffered_cnt [2024-02-07 14:24:24,183 INFO L76 edCorrectnessWitness]: Location invariant before [L736-L736] 1 <= __unbuffered_cnt [2024-02-07 14:24:24,183 INFO L76 edCorrectnessWitness]: Location invariant before [L793-L793] ((((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 1)) && (z == 2)) && (__unbuffered_p0_EAX == 0 || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) [2024-02-07 14:24:24,183 INFO L76 edCorrectnessWitness]: Location invariant before [L789-L789] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:24,184 INFO L76 edCorrectnessWitness]: Location invariant before [L751-L751] 1 <= __unbuffered_cnt [2024-02-07 14:24:24,184 INFO L76 edCorrectnessWitness]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 14:24:24,184 INFO L76 edCorrectnessWitness]: Location invariant before [L758-L758] ((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) [2024-02-07 14:24:24,184 INFO L76 edCorrectnessWitness]: Location invariant before [L726-L726] z == 2 [2024-02-07 14:24:24,184 INFO L76 edCorrectnessWitness]: Location invariant before [L761-L761] z == 1 [2024-02-07 14:24:24,184 INFO L76 edCorrectnessWitness]: Location invariant before [L730-L730] ((0 <= x) && (x <= 1)) && (x == 0 || x == 1) [2024-02-07 14:24:24,184 INFO L76 edCorrectnessWitness]: Location invariant before [L746-L746] y == 1 [2024-02-07 14:24:24,185 INFO L76 edCorrectnessWitness]: Location invariant before [L765-L765] 0 <= __unbuffered_cnt [2024-02-07 14:24:24,185 INFO L76 edCorrectnessWitness]: Location invariant before [L735-L735] 0 <= __unbuffered_cnt [2024-02-07 14:24:24,185 INFO L76 edCorrectnessWitness]: Location invariant before [L794-L794] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:24,185 INFO L76 edCorrectnessWitness]: Location invariant before [L731-L731] ((0 <= __unbuffered_p0_EAX) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) [2024-02-07 14:24:24,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:24:24,364 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/safe013_tso.i[945,958] [2024-02-07 14:24:24,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:24,481 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 14:24:24,510 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/safe013_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 Start Parsing Local [2024-02-07 14:24:24,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:24,588 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:24:24,589 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 14:24:24,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:24,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:24,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:24:24,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:24:24,595 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 14:24:24,604 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 14:24:24,623 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2024-02-07 14:24:24,623 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:24,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:24:24,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:24:24,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:24:24,633 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 14:24:24,633 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 14:24:24,636 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 14:24:24,648 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 14:24:24,649 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 14:24:24,649 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 14:24:24,657 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 14:24:24,658 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 14:24:24,664 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 14:24:24,665 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 14:24:24,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:24:24,668 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:24:24,668 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:24:24,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:24:24,674 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 14:24:24,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:24,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:24:24,712 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 14:24:24,725 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 14:24:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:24:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:24:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:24:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:24:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:24:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:24:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:24:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:24:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 14:24:24,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 14:24:24,780 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 14:24:24,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 14:24:24,780 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-02-07 14:24:24,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-02-07 14:24:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:24:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:24:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:24:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:24:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:24:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:24:24,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:24:24,785 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 14:24:24,878 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:24:24,880 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:24:25,024 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:24:25,024 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:24:25,165 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:24:25,166 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:24:25,166 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:25 BoogieIcfgContainer [2024-02-07 14:24:25,167 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:24:25,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:24:25,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:24:25,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:24:25,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:24:24" (1/4) ... [2024-02-07 14:24:25,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d480c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:24:25, skipping insertion in model container [2024-02-07 14:24:25,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:24" (2/4) ... [2024-02-07 14:24:25,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d480c8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:25, skipping insertion in model container [2024-02-07 14:24:25,173 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 14:24:25,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d480c8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:25, skipping insertion in model container [2024-02-07 14:24:25,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:25" (4/4) ... [2024-02-07 14:24:25,175 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2024-02-07 14:24:25,189 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:24:25,190 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-02-07 14:24:25,190 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:24:25,228 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 14:24:25,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 134 flow [2024-02-07 14:24:25,304 INFO L124 PetriNetUnfolderBase]: 1/58 cut-off events. [2024-02-07 14:24:25,305 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:25,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 185 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2024-02-07 14:24:25,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 61 transitions, 134 flow [2024-02-07 14:24:25,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2024-02-07 14:24:25,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:24:25,330 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;@2a0637b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:24:25,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-02-07 14:24:25,336 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:24:25,336 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-02-07 14:24:25,337 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:25,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:25,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 14:24:25,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:25,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:25,346 INFO L85 PathProgramCache]: Analyzing trace with hash 9609350, now seen corresponding path program 1 times [2024-02-07 14:24:25,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:25,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922571057] [2024-02-07 14:24:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:25,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:25,506 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 14:24:25,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922571057] [2024-02-07 14:24:25,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922571057] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:25,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:25,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:25,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837941810] [2024-02-07 14:24:25,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:25,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-07 14:24:25,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:25,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-07 14:24:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-07 14:24:25,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:25,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 125 flow. Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:25,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:25,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:25,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:26,513 INFO L124 PetriNetUnfolderBase]: 6602/11456 cut-off events. [2024-02-07 14:24:26,513 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-02-07 14:24:26,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20908 conditions, 11456 events. 6602/11456 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 91455 event pairs, 6602 based on Foata normal form. 294/8454 useless extension candidates. Maximal degree in co-relation 20897. Up to 9348 conditions per place. [2024-02-07 14:24:26,580 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 31 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-02-07 14:24:26,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 163 flow [2024-02-07 14:24:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-07 14:24:26,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-07 14:24:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 79 transitions. [2024-02-07 14:24:26,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6475409836065574 [2024-02-07 14:24:26,591 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 125 flow. Second operand 2 states and 79 transitions. [2024-02-07 14:24:26,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 163 flow [2024-02-07 14:24:26,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:26,596 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 98 flow [2024-02-07 14:24:26,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-02-07 14:24:26,600 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -13 predicate places. [2024-02-07 14:24:26,601 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 98 flow [2024-02-07 14:24:26,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:26,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:26,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:24:26,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:24:26,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:26,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:26,602 INFO L85 PathProgramCache]: Analyzing trace with hash 644661736, now seen corresponding path program 1 times [2024-02-07 14:24:26,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:26,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200176465] [2024-02-07 14:24:26,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:26,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:26,684 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 14:24:26,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:26,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200176465] [2024-02-07 14:24:26,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200176465] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:26,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:26,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:26,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708398042] [2024-02-07 14:24:26,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:26,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:26,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:26,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:26,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:26,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:26,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 98 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 14:24:26,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:26,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:26,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:27,257 INFO L124 PetriNetUnfolderBase]: 6423/9809 cut-off events. [2024-02-07 14:24:27,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:27,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19009 conditions, 9809 events. 6423/9809 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 66871 event pairs, 1081 based on Foata normal form. 0/7218 useless extension candidates. Maximal degree in co-relation 19006. Up to 8081 conditions per place. [2024-02-07 14:24:27,315 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 50 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-02-07 14:24:27,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 67 transitions, 246 flow [2024-02-07 14:24:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-02-07 14:24:27,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5846994535519126 [2024-02-07 14:24:27,318 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 98 flow. Second operand 3 states and 107 transitions. [2024-02-07 14:24:27,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 67 transitions, 246 flow [2024-02-07 14:24:27,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:24:27,321 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 106 flow [2024-02-07 14:24:27,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-02-07 14:24:27,322 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -10 predicate places. [2024-02-07 14:24:27,322 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 106 flow [2024-02-07 14:24:27,322 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 14:24:27,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:27,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:27,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:24:27,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:27,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:27,324 INFO L85 PathProgramCache]: Analyzing trace with hash -329609572, now seen corresponding path program 1 times [2024-02-07 14:24:27,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:27,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109563313] [2024-02-07 14:24:27,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:27,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:27,431 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 14:24:27,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:27,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109563313] [2024-02-07 14:24:27,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109563313] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:27,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:27,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:27,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549316860] [2024-02-07 14:24:27,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:27,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:27,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:27,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:27,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:27,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:27,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 14:24:27,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:27,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:27,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:28,051 INFO L124 PetriNetUnfolderBase]: 6103/9638 cut-off events. [2024-02-07 14:24:28,052 INFO L125 PetriNetUnfolderBase]: For 651/651 co-relation queries the response was YES. [2024-02-07 14:24:28,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19392 conditions, 9638 events. 6103/9638 cut-off events. For 651/651 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 69272 event pairs, 1659 based on Foata normal form. 0/7447 useless extension candidates. Maximal degree in co-relation 19387. Up to 6454 conditions per place. [2024-02-07 14:24:28,092 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 50 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-02-07 14:24:28,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 256 flow [2024-02-07 14:24:28,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:28,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-02-07 14:24:28,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5846994535519126 [2024-02-07 14:24:28,097 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 106 flow. Second operand 3 states and 107 transitions. [2024-02-07 14:24:28,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 256 flow [2024-02-07 14:24:28,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:28,100 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 110 flow [2024-02-07 14:24:28,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-02-07 14:24:28,102 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2024-02-07 14:24:28,102 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 110 flow [2024-02-07 14:24:28,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 14:24:28,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:28,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:28,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:24:28,104 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:28,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:28,104 INFO L85 PathProgramCache]: Analyzing trace with hash -329610945, now seen corresponding path program 1 times [2024-02-07 14:24:28,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:28,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086841919] [2024-02-07 14:24:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:28,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:28,170 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 14:24:28,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:28,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086841919] [2024-02-07 14:24:28,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086841919] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:28,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:28,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:28,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297088470] [2024-02-07 14:24:28,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:28,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:28,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:28,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:28,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:28,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:28,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 110 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 14:24:28,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:28,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:28,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:28,599 INFO L124 PetriNetUnfolderBase]: 4684/7081 cut-off events. [2024-02-07 14:24:28,600 INFO L125 PetriNetUnfolderBase]: For 734/734 co-relation queries the response was YES. [2024-02-07 14:24:28,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15227 conditions, 7081 events. 4684/7081 cut-off events. For 734/734 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 43511 event pairs, 1496 based on Foata normal form. 0/5941 useless extension candidates. Maximal degree in co-relation 15221. Up to 5835 conditions per place. [2024-02-07 14:24:28,634 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 49 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-02-07 14:24:28,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 272 flow [2024-02-07 14:24:28,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:28,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-02-07 14:24:28,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2024-02-07 14:24:28,636 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 110 flow. Second operand 3 states and 111 transitions. [2024-02-07 14:24:28,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 272 flow [2024-02-07 14:24:28,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:28,639 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 138 flow [2024-02-07 14:24:28,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-02-07 14:24:28,640 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-02-07 14:24:28,641 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 138 flow [2024-02-07 14:24:28,641 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 14:24:28,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:28,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:28,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:24:28,642 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:28,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:28,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1628004359, now seen corresponding path program 1 times [2024-02-07 14:24:28,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:28,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301171055] [2024-02-07 14:24:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:28,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:28,710 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 14:24:28,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:28,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301171055] [2024-02-07 14:24:28,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301171055] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:28,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:28,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:28,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646142852] [2024-02-07 14:24:28,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:28,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:28,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:28,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:28,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:28,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 138 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 14:24:28,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:28,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:28,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:29,202 INFO L124 PetriNetUnfolderBase]: 4684/8001 cut-off events. [2024-02-07 14:24:29,202 INFO L125 PetriNetUnfolderBase]: For 1321/1321 co-relation queries the response was YES. [2024-02-07 14:24:29,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17894 conditions, 8001 events. 4684/8001 cut-off events. For 1321/1321 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 59405 event pairs, 4392 based on Foata normal form. 0/6663 useless extension candidates. Maximal degree in co-relation 17887. Up to 6749 conditions per place. [2024-02-07 14:24:29,250 INFO L140 encePairwiseOnDemand]: 59/61 looper letters, 33 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-02-07 14:24:29,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 48 transitions, 204 flow [2024-02-07 14:24:29,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:29,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-02-07 14:24:29,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453551912568306 [2024-02-07 14:24:29,252 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 138 flow. Second operand 3 states and 83 transitions. [2024-02-07 14:24:29,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 48 transitions, 204 flow [2024-02-07 14:24:29,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:29,257 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 134 flow [2024-02-07 14:24:29,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-02-07 14:24:29,257 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-02-07 14:24:29,258 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 134 flow [2024-02-07 14:24:29,258 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 14:24:29,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:29,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:29,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:24:29,258 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:29,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:29,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1163923181, now seen corresponding path program 1 times [2024-02-07 14:24:29,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:29,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293922739] [2024-02-07 14:24:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:29,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:29,284 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 14:24:29,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:29,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293922739] [2024-02-07 14:24:29,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293922739] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:29,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:29,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:29,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105029551] [2024-02-07 14:24:29,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:29,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:29,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:29,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:29,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:29,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:29,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 14:24:29,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:29,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:29,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:29,654 INFO L124 PetriNetUnfolderBase]: 4097/6304 cut-off events. [2024-02-07 14:24:29,655 INFO L125 PetriNetUnfolderBase]: For 995/995 co-relation queries the response was YES. [2024-02-07 14:24:29,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14591 conditions, 6304 events. 4097/6304 cut-off events. For 995/995 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 39417 event pairs, 994 based on Foata normal form. 244/5691 useless extension candidates. Maximal degree in co-relation 14584. Up to 5261 conditions per place. [2024-02-07 14:24:29,680 INFO L140 encePairwiseOnDemand]: 59/61 looper letters, 54 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2024-02-07 14:24:29,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 300 flow [2024-02-07 14:24:29,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:29,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-02-07 14:24:29,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2024-02-07 14:24:29,682 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 134 flow. Second operand 3 states and 105 transitions. [2024-02-07 14:24:29,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 300 flow [2024-02-07 14:24:29,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:29,685 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 129 flow [2024-02-07 14:24:29,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-02-07 14:24:29,687 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2024-02-07 14:24:29,688 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 129 flow [2024-02-07 14:24:29,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 14:24:29,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:29,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:29,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:24:29,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:29,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:29,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1112700214, now seen corresponding path program 1 times [2024-02-07 14:24:29,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:29,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545663107] [2024-02-07 14:24:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:29,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:29,733 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 14:24:29,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:29,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545663107] [2024-02-07 14:24:29,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545663107] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:29,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:29,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:29,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787223357] [2024-02-07 14:24:29,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:29,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:29,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:29,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:29,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:29,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 14:24:29,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:29,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:29,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:29,999 INFO L124 PetriNetUnfolderBase]: 3702/5926 cut-off events. [2024-02-07 14:24:29,999 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-02-07 14:24:30,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13361 conditions, 5926 events. 3702/5926 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 38708 event pairs, 1391 based on Foata normal form. 168/5224 useless extension candidates. Maximal degree in co-relation 13355. Up to 3799 conditions per place. [2024-02-07 14:24:30,030 INFO L140 encePairwiseOnDemand]: 59/61 looper letters, 53 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2024-02-07 14:24:30,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 293 flow [2024-02-07 14:24:30,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-02-07 14:24:30,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683060109289617 [2024-02-07 14:24:30,031 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 129 flow. Second operand 3 states and 104 transitions. [2024-02-07 14:24:30,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 293 flow [2024-02-07 14:24:30,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:30,033 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 124 flow [2024-02-07 14:24:30,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=124, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-02-07 14:24:30,034 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -10 predicate places. [2024-02-07 14:24:30,034 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 124 flow [2024-02-07 14:24:30,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 14:24:30,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:30,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:30,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:24:30,035 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:30,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1144084102, now seen corresponding path program 1 times [2024-02-07 14:24:30,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494294674] [2024-02-07 14:24:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:30,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:30,144 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 14:24:30,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:30,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494294674] [2024-02-07 14:24:30,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494294674] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:30,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:30,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:24:30,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295835158] [2024-02-07 14:24:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:30,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:24:30,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:30,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:24:30,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:24:30,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:30,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 14:24:30,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:30,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:30,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:30,493 INFO L124 PetriNetUnfolderBase]: 3493/6284 cut-off events. [2024-02-07 14:24:30,493 INFO L125 PetriNetUnfolderBase]: For 824/824 co-relation queries the response was YES. [2024-02-07 14:24:30,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13461 conditions, 6284 events. 3493/6284 cut-off events. For 824/824 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 46468 event pairs, 597 based on Foata normal form. 179/5387 useless extension candidates. Maximal degree in co-relation 13456. Up to 3001 conditions per place. [2024-02-07 14:24:30,524 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 54 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2024-02-07 14:24:30,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 318 flow [2024-02-07 14:24:30,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:24:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:24:30,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-02-07 14:24:30,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286885245901639 [2024-02-07 14:24:30,526 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 124 flow. Second operand 4 states and 129 transitions. [2024-02-07 14:24:30,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 318 flow [2024-02-07 14:24:30,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:30,528 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 149 flow [2024-02-07 14:24:30,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2024-02-07 14:24:30,529 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -6 predicate places. [2024-02-07 14:24:30,529 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 149 flow [2024-02-07 14:24:30,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 14:24:30,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:30,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:30,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:24:30,530 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:30,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1132166690, now seen corresponding path program 1 times [2024-02-07 14:24:30,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118199873] [2024-02-07 14:24:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:30,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:30,553 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 14:24:30,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:30,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118199873] [2024-02-07 14:24:30,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118199873] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:30,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:30,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:30,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311397672] [2024-02-07 14:24:30,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:30,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:30,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:30,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:30,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:30,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:30,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 14:24:30,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:30,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:30,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:30,770 INFO L124 PetriNetUnfolderBase]: 2080/3783 cut-off events. [2024-02-07 14:24:30,771 INFO L125 PetriNetUnfolderBase]: For 1165/1177 co-relation queries the response was YES. [2024-02-07 14:24:30,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8465 conditions, 3783 events. 2080/3783 cut-off events. For 1165/1177 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 25434 event pairs, 864 based on Foata normal form. 98/3575 useless extension candidates. Maximal degree in co-relation 8458. Up to 2834 conditions per place. [2024-02-07 14:24:30,782 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 35 selfloop transitions, 3 changer transitions 2/54 dead transitions. [2024-02-07 14:24:30,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 241 flow [2024-02-07 14:24:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:30,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-02-07 14:24:30,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355191256830601 [2024-02-07 14:24:30,784 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 149 flow. Second operand 3 states and 98 transitions. [2024-02-07 14:24:30,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 241 flow [2024-02-07 14:24:30,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:30,787 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 127 flow [2024-02-07 14:24:30,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2024-02-07 14:24:30,788 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -10 predicate places. [2024-02-07 14:24:30,788 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 127 flow [2024-02-07 14:24:30,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 14:24:30,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:30,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:30,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:24:30,789 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:30,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:30,789 INFO L85 PathProgramCache]: Analyzing trace with hash 26039, now seen corresponding path program 1 times [2024-02-07 14:24:30,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:30,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771030477] [2024-02-07 14:24:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:30,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:30,851 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 14:24:30,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:30,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771030477] [2024-02-07 14:24:30,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771030477] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:30,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:30,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:30,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444144635] [2024-02-07 14:24:30,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:30,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:24:30,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:24:30,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:24:30,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:30,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:30,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:30,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:30,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:31,026 INFO L124 PetriNetUnfolderBase]: 1159/2144 cut-off events. [2024-02-07 14:24:31,026 INFO L125 PetriNetUnfolderBase]: For 765/765 co-relation queries the response was YES. [2024-02-07 14:24:31,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4865 conditions, 2144 events. 1159/2144 cut-off events. For 765/765 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 12551 event pairs, 149 based on Foata normal form. 98/2104 useless extension candidates. Maximal degree in co-relation 4858. Up to 641 conditions per place. [2024-02-07 14:24:31,035 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 57 selfloop transitions, 8 changer transitions 1/80 dead transitions. [2024-02-07 14:24:31,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 363 flow [2024-02-07 14:24:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:24:31,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:24:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-02-07 14:24:31,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016393442622951 [2024-02-07 14:24:31,036 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 127 flow. Second operand 5 states and 153 transitions. [2024-02-07 14:24:31,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 363 flow [2024-02-07 14:24:31,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 80 transitions, 347 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:31,039 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 160 flow [2024-02-07 14:24:31,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2024-02-07 14:24:31,039 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-02-07 14:24:31,039 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 160 flow [2024-02-07 14:24:31,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:31,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:31,040 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 14:24:31,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:24:31,040 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:31,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:31,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1371843514, now seen corresponding path program 1 times [2024-02-07 14:24:31,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:31,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113206459] [2024-02-07 14:24:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:31,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:31,112 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 14:24:31,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:31,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113206459] [2024-02-07 14:24:31,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113206459] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:31,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:31,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:31,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592100977] [2024-02-07 14:24:31,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:31,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:31,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:31,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:31,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:31,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:31,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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 14:24:31,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:31,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:31,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:31,269 INFO L124 PetriNetUnfolderBase]: 700/1199 cut-off events. [2024-02-07 14:24:31,269 INFO L125 PetriNetUnfolderBase]: For 872/872 co-relation queries the response was YES. [2024-02-07 14:24:31,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3182 conditions, 1199 events. 700/1199 cut-off events. For 872/872 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5510 event pairs, 128 based on Foata normal form. 44/1213 useless extension candidates. Maximal degree in co-relation 3175. Up to 378 conditions per place. [2024-02-07 14:24:31,274 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 49 selfloop transitions, 11 changer transitions 1/75 dead transitions. [2024-02-07 14:24:31,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 75 transitions, 358 flow [2024-02-07 14:24:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-02-07 14:24:31,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45081967213114754 [2024-02-07 14:24:31,276 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 160 flow. Second operand 6 states and 165 transitions. [2024-02-07 14:24:31,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 75 transitions, 358 flow [2024-02-07 14:24:31,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 75 transitions, 333 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:31,279 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 174 flow [2024-02-07 14:24:31,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2024-02-07 14:24:31,280 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -5 predicate places. [2024-02-07 14:24:31,280 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 174 flow [2024-02-07 14:24:31,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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 14:24:31,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:31,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:31,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 14:24:31,281 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:31,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:31,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1667385022, now seen corresponding path program 1 times [2024-02-07 14:24:31,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:31,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217190553] [2024-02-07 14:24:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:31,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:24:31,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:24:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:24:31,316 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:24:31,317 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:24:31,317 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 39 remaining) [2024-02-07 14:24:31,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 39 remaining) [2024-02-07 14:24:31,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 39 remaining) [2024-02-07 14:24:31,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 39 remaining) [2024-02-07 14:24:31,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 39 remaining) [2024-02-07 14:24:31,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 39 remaining) [2024-02-07 14:24:31,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 39 remaining) [2024-02-07 14:24:31,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 39 remaining) [2024-02-07 14:24:31,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 39 remaining) [2024-02-07 14:24:31,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 39 remaining) [2024-02-07 14:24:31,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 39 remaining) [2024-02-07 14:24:31,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 39 remaining) [2024-02-07 14:24:31,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 39 remaining) [2024-02-07 14:24:31,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 39 remaining) [2024-02-07 14:24:31,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 39 remaining) [2024-02-07 14:24:31,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 39 remaining) [2024-02-07 14:24:31,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 39 remaining) [2024-02-07 14:24:31,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 39 remaining) [2024-02-07 14:24:31,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 39 remaining) [2024-02-07 14:24:31,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 39 remaining) [2024-02-07 14:24:31,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 39 remaining) [2024-02-07 14:24:31,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (17 of 39 remaining) [2024-02-07 14:24:31,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 39 remaining) [2024-02-07 14:24:31,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 39 remaining) [2024-02-07 14:24:31,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 39 remaining) [2024-02-07 14:24:31,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 39 remaining) [2024-02-07 14:24:31,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 39 remaining) [2024-02-07 14:24:31,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 39 remaining) [2024-02-07 14:24:31,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 39 remaining) [2024-02-07 14:24:31,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 39 remaining) [2024-02-07 14:24:31,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 39 remaining) [2024-02-07 14:24:31,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 39 remaining) [2024-02-07 14:24:31,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 39 remaining) [2024-02-07 14:24:31,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 39 remaining) [2024-02-07 14:24:31,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 39 remaining) [2024-02-07 14:24:31,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 39 remaining) [2024-02-07 14:24:31,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 39 remaining) [2024-02-07 14:24:31,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 39 remaining) [2024-02-07 14:24:31,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 39 remaining) [2024-02-07 14:24:31,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 14:24:31,325 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:31,330 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:24:31,330 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:24:31,355 INFO L503 ceAbstractionStarter]: Automizer considered 21 witness invariants [2024-02-07 14:24:31,355 INFO L504 ceAbstractionStarter]: WitnessConsidered=21 [2024-02-07 14:24:31,356 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:24:31 BasicIcfg [2024-02-07 14:24:31,356 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:24:31,357 INFO L158 Benchmark]: Toolchain (without parser) took 7248.47ms. Allocated memory was 195.0MB in the beginning and 1.1GB in the end (delta: 897.6MB). Free memory was 160.1MB in the beginning and 681.6MB in the end (delta: -521.4MB). Peak memory consumption was 375.1MB. Max. memory is 16.1GB. [2024-02-07 14:24:31,357 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:24:31,357 INFO L158 Benchmark]: Witness Parser took 0.45ms. Allocated memory is still 195.0MB. Free memory is still 164.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:24:31,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 479.93ms. Allocated memory is still 195.0MB. Free memory was 160.1MB in the beginning and 130.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-02-07 14:24:31,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.90ms. Allocated memory is still 195.0MB. Free memory was 130.8MB in the beginning and 128.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:24:31,358 INFO L158 Benchmark]: Boogie Preprocessor took 41.84ms. Allocated memory is still 195.0MB. Free memory was 128.6MB in the beginning and 126.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:24:31,358 INFO L158 Benchmark]: RCFGBuilder took 499.14ms. Allocated memory is still 195.0MB. Free memory was 126.6MB in the beginning and 133.9MB in the end (delta: -7.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 14:24:31,358 INFO L158 Benchmark]: TraceAbstraction took 6187.41ms. Allocated memory was 195.0MB in the beginning and 1.1GB in the end (delta: 897.6MB). Free memory was 133.0MB in the beginning and 681.6MB in the end (delta: -548.6MB). Peak memory consumption was 350.9MB. Max. memory is 16.1GB. [2024-02-07 14:24:31,359 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.45ms. Allocated memory is still 195.0MB. Free memory is still 164.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 479.93ms. Allocated memory is still 195.0MB. Free memory was 160.1MB in the beginning and 130.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.90ms. Allocated memory is still 195.0MB. Free memory was 130.8MB in the beginning and 128.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.84ms. Allocated memory is still 195.0MB. Free memory was 128.6MB in the beginning and 126.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 499.14ms. Allocated memory is still 195.0MB. Free memory was 126.6MB in the beginning and 133.9MB in the end (delta: -7.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6187.41ms. Allocated memory was 195.0MB in the beginning and 1.1GB in the end (delta: 897.6MB). Free memory was 133.0MB in the beginning and 681.6MB in the end (delta: -548.6MB). Peak memory consumption was 350.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 793]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p2_EAX = 0; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L719] 0 int y = 0; [L721] 0 int z = 0; [L780] 0 pthread_t t2091; [L781] FCALL, FORK 0 pthread_create(&t2091, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2091={5:0}, x=0, y=0, z=0] [L725] 1 z = 2 [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[z],IntegerLiteral[2]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=2] [L730] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] [L730] 1 __unbuffered_p0_EAX = x [L731] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=2] [L782] 0 pthread_t t2092; [L783] FCALL, FORK 0 pthread_create(&t2092, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2091={5:0}, t2092={6:0}, x=0, y=0, z=2] [L742] 2 x = 1 [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0, z=2] [L784] 0 pthread_t t2093; [L785] FCALL, FORK 0 pthread_create(&t2093, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2091={5:0}, t2092={6:0}, t2093={3:0}, x=1, y=0, z=2] [L757] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L757] 3 __unbuffered_p2_EAX = y [L758] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0, z=2] [L745] 2 y = 1 [L746] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=2] [L760] 3 z = 1 [L761] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[z],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=1] [L735] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L735] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L736] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=1] [L750] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L750] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L751] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=1] [L765] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L765] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L766] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=1] [L787] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L787] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L788] 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_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2091={5:0}, t2092={6:0}, t2093={3:0}, x=1, y=1, z=1] [L789] 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]]]]]] [L789] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L789] RET 0 assume_abort_if_not(main$tmp_guard0) [L793] 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[z],IntegerLiteral[2]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2091={5:0}, t2092={6:0}, t2093={3:0}, x=1, y=1, z=1] - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 730]: 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: 735]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 736]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 743]: 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: 750]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 751]: 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: 758]: 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: 765]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 766]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 795]: 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: 785]: 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: 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: 783]: 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, 100 locations, 39 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: 6.1s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 366 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 365 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 674 IncrementalHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 1 mSDtfsCounter, 674 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=11, InterpolantAutomatonStates: 38, 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, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 14:24:31,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE