./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe023_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/safe023_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe023_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-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:04:13,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:04:13,571 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:04:13,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:04:13,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:04:13,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:04:13,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:04:13,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:04:13,616 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:04:13,620 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:04:13,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:04:13,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:04:13,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:04:13,624 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:04:13,625 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:04:13,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:04:13,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:04:13,626 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:04:13,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:04:13,626 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:04:13,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:04:13,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:04:13,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:04:13,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:04:13,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:04:13,629 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:04:13,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:04:13,629 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:04:13,630 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:04:13,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:04:13,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:04:13,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:04:13,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:04:13,632 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:04:13,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:04:13,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:04:13,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:04:13,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:04:13,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:04:13,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:04:13,634 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:04:13,635 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:04:13,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:04:13,635 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:04:13,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:04:13,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:04:13,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:04:13,960 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:04:13,960 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:04:13,962 INFO L431 ainManager$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/safe023_tso.yml/witness.yml [2024-02-07 19:04:14,198 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:04:14,208 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:04:14,209 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2024-02-07 19:04:15,742 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:04:16,046 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:04:16,047 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2024-02-07 19:04:16,061 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/693450033/e709dbc296cf47678dfc9368950d4f98/FLAG926d3182e [2024-02-07 19:04:16,074 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/693450033/e709dbc296cf47678dfc9368950d4f98 [2024-02-07 19:04:16,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:04:16,076 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:04:16,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:04:16,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:04:16,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:04:16,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:04:14" (1/2) ... [2024-02-07 19:04:16,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b20e17 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:04:16, skipping insertion in model container [2024-02-07 19:04:16,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:04:14" (1/2) ... [2024-02-07 19:04:16,091 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2273d209 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:04:16, skipping insertion in model container [2024-02-07 19:04:16,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:04:16" (2/2) ... [2024-02-07 19:04:16,091 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b20e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16, skipping insertion in model container [2024-02-07 19:04:16,091 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:04:16" (2/2) ... [2024-02-07 19:04:16,092 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:04:16,188 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:04:16,189 INFO L76 edCorrectnessWitness]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 19:04:16,190 INFO L76 edCorrectnessWitness]: Location invariant before [L788-L788] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 19:04:16,190 INFO L76 edCorrectnessWitness]: Location invariant before [L757-L757] ((0 <= x) && (x <= 1)) && (x == 0 || x == 1) [2024-02-07 19:04:16,190 INFO L76 edCorrectnessWitness]: Location invariant before [L766-L766] 1 <= __unbuffered_cnt [2024-02-07 19:04:16,190 INFO L76 edCorrectnessWitness]: Location invariant before [L750-L750] 0 <= __unbuffered_cnt [2024-02-07 19:04:16,190 INFO L76 edCorrectnessWitness]: Location invariant before [L793-L793] (((((0 <= __unbuffered_p2_EBX) && (__unbuffered_p2_EBX <= 2)) && (__unbuffered_p2_EBX <= 127)) && (y == 2)) && ((__unbuffered_p0_EAX == 1 && (__unbuffered_p2_EAX == 1 || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) || ((((((0 <= __unbuffered_p0_EAX && 0 <= __unbuffered_p2_EAX) && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2) [2024-02-07 19:04:16,190 INFO L76 edCorrectnessWitness]: Location invariant before [L743-L743] y == 2 [2024-02-07 19:04:16,190 INFO L76 edCorrectnessWitness]: Location invariant before [L735-L735] 0 <= __unbuffered_cnt [2024-02-07 19:04:16,191 INFO L76 edCorrectnessWitness]: Location invariant before [L765-L765] 0 <= __unbuffered_cnt [2024-02-07 19:04:16,191 INFO L76 edCorrectnessWitness]: Location invariant before [L789-L789] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 19:04:16,191 INFO L76 edCorrectnessWitness]: Location invariant before [L731-L731] (((0 <= __unbuffered_p0_EAX) && (__unbuffered_p0_EAX <= 2)) && (__unbuffered_p0_EAX <= 127)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2) [2024-02-07 19:04:16,191 INFO L76 edCorrectnessWitness]: Location invariant before [L787-L787] 0 <= __unbuffered_cnt [2024-02-07 19:04:16,191 INFO L76 edCorrectnessWitness]: Location invariant before [L746-L746] x == 1 [2024-02-07 19:04:16,191 INFO L76 edCorrectnessWitness]: Location invariant before [L751-L751] 1 <= __unbuffered_cnt [2024-02-07 19:04:16,191 INFO L76 edCorrectnessWitness]: Location invariant before [L761-L761] (((0 <= __unbuffered_p2_EBX) && (__unbuffered_p2_EBX <= 2)) && (__unbuffered_p2_EBX <= 127)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2) [2024-02-07 19:04:16,192 INFO L76 edCorrectnessWitness]: Location invariant before [L726-L726] y == 1 [2024-02-07 19:04:16,192 INFO L76 edCorrectnessWitness]: Location invariant before [L760-L760] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:04:16,192 INFO L76 edCorrectnessWitness]: Location invariant before [L730-L730] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:04:16,192 INFO L76 edCorrectnessWitness]: Location invariant before [L795-L795] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 19:04:16,192 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 19:04:16,192 INFO L76 edCorrectnessWitness]: Location invariant before [L794-L794] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 19:04:16,193 INFO L76 edCorrectnessWitness]: Location invariant before [L736-L736] 1 <= __unbuffered_cnt [2024-02-07 19:04:16,235 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:04:16,452 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/safe023_tso.i[945,958] [2024-02-07 19:04:16,615 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:04:16,624 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 19:04:16,656 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/safe023_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 Start Parsing Local [2024-02-07 19:04:16,730 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:04:16,764 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:04:16,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16 WrapperNode [2024-02-07 19:04:16,765 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:04:16,766 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:04:16,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:04:16,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:04:16,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16" (1/1) ... [2024-02-07 19:04:16,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16" (1/1) ... [2024-02-07 19:04:16,824 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2024-02-07 19:04:16,825 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:04:16,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:04:16,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:04:16,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:04:16,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16" (1/1) ... [2024-02-07 19:04:16,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16" (1/1) ... [2024-02-07 19:04:16,862 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16" (1/1) ... [2024-02-07 19:04:16,880 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 19:04:16,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16" (1/1) ... [2024-02-07 19:04:16,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16" (1/1) ... [2024-02-07 19:04:16,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16" (1/1) ... [2024-02-07 19:04:16,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16" (1/1) ... [2024-02-07 19:04:16,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16" (1/1) ... [2024-02-07 19:04:16,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16" (1/1) ... [2024-02-07 19:04:16,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:04:16,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:04:16,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:04:16,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:04:16,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16" (1/1) ... [2024-02-07 19:04:16,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:04:16,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:04:16,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 19:04:16,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 19:04:16,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:04:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:04:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:04:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:04:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 19:04:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:04:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:04:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:04:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 19:04:16,990 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 19:04:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 19:04:16,991 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 19:04:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-02-07 19:04:16,994 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-02-07 19:04:16,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:04:16,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:04:16,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:04:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:04:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 19:04:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:04:16,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:04:16,997 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:04:17,129 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:04:17,133 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:04:17,531 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:04:17,534 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:04:17,812 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:04:17,813 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 19:04:17,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:04:17 BoogieIcfgContainer [2024-02-07 19:04:17,817 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:04:17,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:04:17,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:04:17,826 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:04:17,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:04:14" (1/4) ... [2024-02-07 19:04:17,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780fc497 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:04:17, skipping insertion in model container [2024-02-07 19:04:17,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:04:16" (2/4) ... [2024-02-07 19:04:17,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780fc497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:04:17, skipping insertion in model container [2024-02-07 19:04:17,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:16" (3/4) ... [2024-02-07 19:04:17,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780fc497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:04:17, skipping insertion in model container [2024-02-07 19:04:17,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:04:17" (4/4) ... [2024-02-07 19:04:17,841 INFO L112 eAbstractionObserver]: Analyzing ICFG safe023_tso.i [2024-02-07 19:04:17,875 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:04:17,875 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2024-02-07 19:04:17,875 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:04:17,970 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:04:18,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 136 flow [2024-02-07 19:04:18,124 INFO L124 PetriNetUnfolderBase]: 1/59 cut-off events. [2024-02-07 19:04:18,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:04:18,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 190 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2024-02-07 19:04:18,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 136 flow [2024-02-07 19:04:18,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2024-02-07 19:04:18,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:04:18,180 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;@64d64147, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:04:18,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-02-07 19:04:18,202 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:04:18,203 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-02-07 19:04:18,203 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:04:18,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:18,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 19:04:18,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:18,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:18,214 INFO L85 PathProgramCache]: Analyzing trace with hash 9796008, now seen corresponding path program 1 times [2024-02-07 19:04:18,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:18,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381909882] [2024-02-07 19:04:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:18,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:18,710 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 19:04:18,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:18,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381909882] [2024-02-07 19:04:18,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381909882] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:18,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:18,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:18,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323677293] [2024-02-07 19:04:18,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:18,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-07 19:04:18,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:18,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-07 19:04:18,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-07 19:04:18,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:18,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 127 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 19:04:18,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:18,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:18,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:20,300 INFO L124 PetriNetUnfolderBase]: 7577/12719 cut-off events. [2024-02-07 19:04:20,301 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-02-07 19:04:20,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23524 conditions, 12719 events. 7577/12719 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 100073 event pairs, 7577 based on Foata normal form. 294/9000 useless extension candidates. Maximal degree in co-relation 23513. Up to 10701 conditions per place. [2024-02-07 19:04:20,427 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 32 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-02-07 19:04:20,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 47 transitions, 167 flow [2024-02-07 19:04:20,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-07 19:04:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-07 19:04:20,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-02-07 19:04:20,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-02-07 19:04:20,443 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 127 flow. Second operand 2 states and 80 transitions. [2024-02-07 19:04:20,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 47 transitions, 167 flow [2024-02-07 19:04:20,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 47 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:04:20,451 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 100 flow [2024-02-07 19:04:20,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-02-07 19:04:20,456 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2024-02-07 19:04:20,457 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 100 flow [2024-02-07 19:04:20,457 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 19:04:20,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:20,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:04:20,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:04:20,458 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:20,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:20,459 INFO L85 PathProgramCache]: Analyzing trace with hash 824040298, now seen corresponding path program 1 times [2024-02-07 19:04:20,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:20,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153011272] [2024-02-07 19:04:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:20,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:20,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:20,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153011272] [2024-02-07 19:04:20,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153011272] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:20,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:20,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:20,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391004858] [2024-02-07 19:04:20,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:20,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:20,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:20,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:20,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:20,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:20,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 100 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 19:04:20,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:20,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:20,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:22,227 INFO L124 PetriNetUnfolderBase]: 11197/18694 cut-off events. [2024-02-07 19:04:22,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:04:22,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34937 conditions, 18694 events. 11197/18694 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 155119 event pairs, 4819 based on Foata normal form. 0/13649 useless extension candidates. Maximal degree in co-relation 34934. Up to 9015 conditions per place. [2024-02-07 19:04:22,336 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 56 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-02-07 19:04:22,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 73 transitions, 272 flow [2024-02-07 19:04:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:22,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:22,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-02-07 19:04:22,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6182795698924731 [2024-02-07 19:04:22,340 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 100 flow. Second operand 3 states and 115 transitions. [2024-02-07 19:04:22,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 73 transitions, 272 flow [2024-02-07 19:04:22,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:04:22,344 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 116 flow [2024-02-07 19:04:22,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-02-07 19:04:22,344 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2024-02-07 19:04:22,345 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 116 flow [2024-02-07 19:04:22,345 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 19:04:22,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:22,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:22,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:04:22,346 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:22,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:22,346 INFO L85 PathProgramCache]: Analyzing trace with hash 226761029, now seen corresponding path program 1 times [2024-02-07 19:04:22,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:22,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426295971] [2024-02-07 19:04:22,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:22,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:22,431 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 19:04:22,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:22,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426295971] [2024-02-07 19:04:22,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426295971] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:22,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:22,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:22,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934051937] [2024-02-07 19:04:22,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:22,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:22,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:22,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:22,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:22,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:22,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 116 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 19:04:22,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:22,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:22,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:23,375 INFO L124 PetriNetUnfolderBase]: 8602/13245 cut-off events. [2024-02-07 19:04:23,375 INFO L125 PetriNetUnfolderBase]: For 2053/2080 co-relation queries the response was YES. [2024-02-07 19:04:23,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27682 conditions, 13245 events. 8602/13245 cut-off events. For 2053/2080 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 92413 event pairs, 2894 based on Foata normal form. 0/10976 useless extension candidates. Maximal degree in co-relation 27677. Up to 10793 conditions per place. [2024-02-07 19:04:23,576 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 53 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-02-07 19:04:23,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 296 flow [2024-02-07 19:04:23,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:23,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-02-07 19:04:23,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6075268817204301 [2024-02-07 19:04:23,583 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 116 flow. Second operand 3 states and 113 transitions. [2024-02-07 19:04:23,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 296 flow [2024-02-07 19:04:23,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:23,586 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 146 flow [2024-02-07 19:04:23,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=114, 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=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-02-07 19:04:23,588 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2024-02-07 19:04:23,589 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 146 flow [2024-02-07 19:04:23,589 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 19:04:23,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:23,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:23,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:04:23,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:23,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:23,590 INFO L85 PathProgramCache]: Analyzing trace with hash 226762434, now seen corresponding path program 1 times [2024-02-07 19:04:23,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:23,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291766513] [2024-02-07 19:04:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:23,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:23,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:23,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:23,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291766513] [2024-02-07 19:04:23,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291766513] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:23,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:23,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:23,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162339958] [2024-02-07 19:04:23,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:23,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:23,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:23,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:23,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:23,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:23,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 146 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 19:04:23,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:23,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:23,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:24,543 INFO L124 PetriNetUnfolderBase]: 8274/13160 cut-off events. [2024-02-07 19:04:24,543 INFO L125 PetriNetUnfolderBase]: For 2711/2735 co-relation queries the response was YES. [2024-02-07 19:04:24,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30668 conditions, 13160 events. 8274/13160 cut-off events. For 2711/2735 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 97700 event pairs, 2618 based on Foata normal form. 0/11358 useless extension candidates. Maximal degree in co-relation 30662. Up to 9659 conditions per place. [2024-02-07 19:04:24,631 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 58 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-02-07 19:04:24,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 340 flow [2024-02-07 19:04:24,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-02-07 19:04:24,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5860215053763441 [2024-02-07 19:04:24,633 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 146 flow. Second operand 3 states and 109 transitions. [2024-02-07 19:04:24,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 340 flow [2024-02-07 19:04:24,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:24,635 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 150 flow [2024-02-07 19:04:24,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-02-07 19:04:24,636 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-02-07 19:04:24,636 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 150 flow [2024-02-07 19:04:24,637 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 19:04:24,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:24,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:24,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:04:24,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:24,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:24,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1560342343, now seen corresponding path program 1 times [2024-02-07 19:04:24,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:24,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212177040] [2024-02-07 19:04:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:24,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:24,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:24,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212177040] [2024-02-07 19:04:24,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212177040] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:24,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:24,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:24,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44057678] [2024-02-07 19:04:24,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:24,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:24,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:24,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:24,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:24,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 62 [2024-02-07 19:04:24,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 150 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 19:04:24,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:24,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 62 [2024-02-07 19:04:24,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:25,480 INFO L124 PetriNetUnfolderBase]: 8274/13929 cut-off events. [2024-02-07 19:04:25,480 INFO L125 PetriNetUnfolderBase]: For 3834/3889 co-relation queries the response was YES. [2024-02-07 19:04:25,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32431 conditions, 13929 events. 8274/13929 cut-off events. For 3834/3889 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 111997 event pairs, 7708 based on Foata normal form. 0/11863 useless extension candidates. Maximal degree in co-relation 32424. Up to 12105 conditions per place. [2024-02-07 19:04:25,579 INFO L140 encePairwiseOnDemand]: 60/62 looper letters, 35 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-02-07 19:04:25,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 50 transitions, 220 flow [2024-02-07 19:04:25,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:25,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:25,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-02-07 19:04:25,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-02-07 19:04:25,581 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 150 flow. Second operand 3 states and 84 transitions. [2024-02-07 19:04:25,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 50 transitions, 220 flow [2024-02-07 19:04:25,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:25,586 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 146 flow [2024-02-07 19:04:25,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-02-07 19:04:25,587 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2024-02-07 19:04:25,587 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 146 flow [2024-02-07 19:04:25,587 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 19:04:25,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:25,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:25,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:04:25,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:25,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:25,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1560298733, now seen corresponding path program 1 times [2024-02-07 19:04:25,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:25,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371395503] [2024-02-07 19:04:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:25,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:25,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:25,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371395503] [2024-02-07 19:04:25,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371395503] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:25,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:25,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:25,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041334279] [2024-02-07 19:04:25,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:25,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:25,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:25,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:25,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:25,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:25,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:25,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:25,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:25,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:26,446 INFO L124 PetriNetUnfolderBase]: 7999/13496 cut-off events. [2024-02-07 19:04:26,447 INFO L125 PetriNetUnfolderBase]: For 2760/2760 co-relation queries the response was YES. [2024-02-07 19:04:26,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30768 conditions, 13496 events. 7999/13496 cut-off events. For 2760/2760 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 107099 event pairs, 4459 based on Foata normal form. 9/11706 useless extension candidates. Maximal degree in co-relation 30761. Up to 11653 conditions per place. [2024-02-07 19:04:26,541 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 47 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-02-07 19:04:26,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 284 flow [2024-02-07 19:04:26,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:26,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-02-07 19:04:26,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-02-07 19:04:26,542 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 146 flow. Second operand 3 states and 103 transitions. [2024-02-07 19:04:26,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 284 flow [2024-02-07 19:04:26,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:26,546 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 164 flow [2024-02-07 19:04:26,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-02-07 19:04:26,548 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-02-07 19:04:26,549 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 164 flow [2024-02-07 19:04:26,549 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 19:04:26,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:26,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:26,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:04:26,549 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:26,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:26,550 INFO L85 PathProgramCache]: Analyzing trace with hash 100285117, now seen corresponding path program 1 times [2024-02-07 19:04:26,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:26,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518941093] [2024-02-07 19:04:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:26,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:26,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:26,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518941093] [2024-02-07 19:04:26,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518941093] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:26,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:26,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:26,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109326230] [2024-02-07 19:04:26,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:26,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:26,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:26,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:26,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:26,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:26,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 164 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 19:04:26,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:26,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:26,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:27,186 INFO L124 PetriNetUnfolderBase]: 6594/10847 cut-off events. [2024-02-07 19:04:27,186 INFO L125 PetriNetUnfolderBase]: For 3616/3616 co-relation queries the response was YES. [2024-02-07 19:04:27,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25410 conditions, 10847 events. 6594/10847 cut-off events. For 3616/3616 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 80702 event pairs, 2917 based on Foata normal form. 454/9844 useless extension candidates. Maximal degree in co-relation 25402. Up to 4930 conditions per place. [2024-02-07 19:04:27,267 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 58 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-02-07 19:04:27,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 75 transitions, 353 flow [2024-02-07 19:04:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-02-07 19:04:27,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913978494623656 [2024-02-07 19:04:27,269 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 164 flow. Second operand 3 states and 110 transitions. [2024-02-07 19:04:27,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 75 transitions, 353 flow [2024-02-07 19:04:27,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 348 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:27,274 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 155 flow [2024-02-07 19:04:27,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-02-07 19:04:27,275 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-02-07 19:04:27,276 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 155 flow [2024-02-07 19:04:27,276 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 19:04:27,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:27,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:27,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:04:27,276 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:27,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:27,279 INFO L85 PathProgramCache]: Analyzing trace with hash -513057781, now seen corresponding path program 1 times [2024-02-07 19:04:27,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:27,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871583834] [2024-02-07 19:04:27,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:27,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:27,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:27,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871583834] [2024-02-07 19:04:27,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871583834] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:27,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:27,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:27,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813890006] [2024-02-07 19:04:27,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:27,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:27,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:27,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:27,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:27,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:27,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 155 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 19:04:27,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:27,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:27,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:27,987 INFO L124 PetriNetUnfolderBase]: 5886/9735 cut-off events. [2024-02-07 19:04:27,987 INFO L125 PetriNetUnfolderBase]: For 3551/3551 co-relation queries the response was YES. [2024-02-07 19:04:28,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22954 conditions, 9735 events. 5886/9735 cut-off events. For 3551/3551 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 70882 event pairs, 2095 based on Foata normal form. 310/8682 useless extension candidates. Maximal degree in co-relation 22946. Up to 6873 conditions per place. [2024-02-07 19:04:28,058 INFO L140 encePairwiseOnDemand]: 60/62 looper letters, 55 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2024-02-07 19:04:28,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 333 flow [2024-02-07 19:04:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:28,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-02-07 19:04:28,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2024-02-07 19:04:28,059 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 155 flow. Second operand 3 states and 104 transitions. [2024-02-07 19:04:28,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 333 flow [2024-02-07 19:04:28,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 327 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:28,062 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 148 flow [2024-02-07 19:04:28,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=59, 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=148, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-02-07 19:04:28,063 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2024-02-07 19:04:28,063 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 148 flow [2024-02-07 19:04:28,063 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 19:04:28,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:28,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:28,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:04:28,064 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:28,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash -545395974, now seen corresponding path program 1 times [2024-02-07 19:04:28,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:28,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946890720] [2024-02-07 19:04:28,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:28,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:28,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:28,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946890720] [2024-02-07 19:04:28,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946890720] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:28,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:28,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:04:28,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645988664] [2024-02-07 19:04:28,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:28,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:04:28,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:28,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:04:28,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:04:28,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 62 [2024-02-07 19:04:28,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 148 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 19:04:28,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:28,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 62 [2024-02-07 19:04:28,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:28,772 INFO L124 PetriNetUnfolderBase]: 5577/9968 cut-off events. [2024-02-07 19:04:28,772 INFO L125 PetriNetUnfolderBase]: For 3215/3215 co-relation queries the response was YES. [2024-02-07 19:04:28,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22503 conditions, 9968 events. 5577/9968 cut-off events. For 3215/3215 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 79006 event pairs, 1207 based on Foata normal form. 305/8729 useless extension candidates. Maximal degree in co-relation 22496. Up to 4681 conditions per place. [2024-02-07 19:04:28,847 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 60 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2024-02-07 19:04:28,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 79 transitions, 390 flow [2024-02-07 19:04:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:04:28,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:04:28,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-02-07 19:04:28,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201612903225806 [2024-02-07 19:04:28,849 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 148 flow. Second operand 4 states and 129 transitions. [2024-02-07 19:04:28,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 79 transitions, 390 flow [2024-02-07 19:04:28,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 79 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:28,853 INFO L231 Difference]: Finished difference. Result has 65 places, 49 transitions, 173 flow [2024-02-07 19:04:28,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=65, PETRI_TRANSITIONS=49} [2024-02-07 19:04:28,853 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -3 predicate places. [2024-02-07 19:04:28,854 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 49 transitions, 173 flow [2024-02-07 19:04:28,854 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 19:04:28,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:28,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:28,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:04:28,854 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:28,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:28,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1747831809, now seen corresponding path program 1 times [2024-02-07 19:04:28,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:28,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19490273] [2024-02-07 19:04:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:28,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:28,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:28,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19490273] [2024-02-07 19:04:28,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19490273] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:28,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:28,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:28,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351395566] [2024-02-07 19:04:28,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:28,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:28,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:28,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:28,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:28,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:28,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 49 transitions, 173 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 19:04:28,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:28,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:28,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:29,267 INFO L124 PetriNetUnfolderBase]: 3160/5747 cut-off events. [2024-02-07 19:04:29,268 INFO L125 PetriNetUnfolderBase]: For 3248/3268 co-relation queries the response was YES. [2024-02-07 19:04:29,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13655 conditions, 5747 events. 3160/5747 cut-off events. For 3248/3268 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 41603 event pairs, 1444 based on Foata normal form. 166/5609 useless extension candidates. Maximal degree in co-relation 13646. Up to 4410 conditions per place. [2024-02-07 19:04:29,299 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 39 selfloop transitions, 3 changer transitions 2/58 dead transitions. [2024-02-07 19:04:29,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 291 flow [2024-02-07 19:04:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-02-07 19:04:29,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-02-07 19:04:29,301 INFO L175 Difference]: Start difference. First operand has 65 places, 49 transitions, 173 flow. Second operand 3 states and 98 transitions. [2024-02-07 19:04:29,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 291 flow [2024-02-07 19:04:29,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:29,304 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 151 flow [2024-02-07 19:04:29,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2024-02-07 19:04:29,304 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2024-02-07 19:04:29,304 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 151 flow [2024-02-07 19:04:29,305 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 19:04:29,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:29,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:29,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 19:04:29,305 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:29,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:29,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1769238206, now seen corresponding path program 1 times [2024-02-07 19:04:29,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:29,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612245422] [2024-02-07 19:04:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:29,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:29,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:29,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612245422] [2024-02-07 19:04:29,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612245422] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:29,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:29,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:29,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706335484] [2024-02-07 19:04:29,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:29,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:04:29,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:29,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:04:29,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:04:29,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:29,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:29,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:29,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:29,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:29,730 INFO L124 PetriNetUnfolderBase]: 2533/4606 cut-off events. [2024-02-07 19:04:29,731 INFO L125 PetriNetUnfolderBase]: For 2609/2609 co-relation queries the response was YES. [2024-02-07 19:04:29,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10950 conditions, 4606 events. 2533/4606 cut-off events. For 2609/2609 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 32207 event pairs, 1190 based on Foata normal form. 4/4432 useless extension candidates. Maximal degree in co-relation 10941. Up to 3648 conditions per place. [2024-02-07 19:04:29,764 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 51 selfloop transitions, 8 changer transitions 0/73 dead transitions. [2024-02-07 19:04:29,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 382 flow [2024-02-07 19:04:29,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:04:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:04:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-02-07 19:04:29,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080645161290323 [2024-02-07 19:04:29,766 INFO L175 Difference]: Start difference. First operand has 61 places, 43 transitions, 151 flow. Second operand 4 states and 126 transitions. [2024-02-07 19:04:29,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 382 flow [2024-02-07 19:04:29,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 351 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-02-07 19:04:29,769 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 200 flow [2024-02-07 19:04:29,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2024-02-07 19:04:29,770 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-02-07 19:04:29,770 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 200 flow [2024-02-07 19:04:29,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:29,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:29,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:29,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 19:04:29,771 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:29,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:29,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2130606683, now seen corresponding path program 1 times [2024-02-07 19:04:29,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:29,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120168179] [2024-02-07 19:04:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:29,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:29,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:29,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120168179] [2024-02-07 19:04:29,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120168179] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:29,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:29,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:29,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719015616] [2024-02-07 19:04:29,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:29,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:04:29,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:04:29,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:04:29,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 62 [2024-02-07 19:04:29,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 200 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 19:04:29,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:29,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 62 [2024-02-07 19:04:29,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:30,130 INFO L124 PetriNetUnfolderBase]: 1835/3336 cut-off events. [2024-02-07 19:04:30,130 INFO L125 PetriNetUnfolderBase]: For 2198/2198 co-relation queries the response was YES. [2024-02-07 19:04:30,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8303 conditions, 3336 events. 1835/3336 cut-off events. For 2198/2198 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 21055 event pairs, 185 based on Foata normal form. 166/3374 useless extension candidates. Maximal degree in co-relation 8294. Up to 1001 conditions per place. [2024-02-07 19:04:30,144 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 73 selfloop transitions, 8 changer transitions 1/96 dead transitions. [2024-02-07 19:04:30,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 96 transitions, 556 flow [2024-02-07 19:04:30,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:04:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:04:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-02-07 19:04:30,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935483870967742 [2024-02-07 19:04:30,146 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 200 flow. Second operand 5 states and 153 transitions. [2024-02-07 19:04:30,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 96 transitions, 556 flow [2024-02-07 19:04:30,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 96 transitions, 552 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-07 19:04:30,149 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 246 flow [2024-02-07 19:04:30,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-02-07 19:04:30,150 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2024-02-07 19:04:30,150 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 246 flow [2024-02-07 19:04:30,150 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 19:04:30,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:30,151 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 19:04:30,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 19:04:30,151 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:30,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:30,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1750945721, now seen corresponding path program 1 times [2024-02-07 19:04:30,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:30,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784936661] [2024-02-07 19:04:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:30,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:30,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:30,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784936661] [2024-02-07 19:04:30,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784936661] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:30,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:30,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:30,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330793949] [2024-02-07 19:04:30,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:30,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:30,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:30,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:30,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:30,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:30,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:30,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:30,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:30,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:30,848 INFO L124 PetriNetUnfolderBase]: 1740/3321 cut-off events. [2024-02-07 19:04:30,849 INFO L125 PetriNetUnfolderBase]: For 3850/3850 co-relation queries the response was YES. [2024-02-07 19:04:30,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9065 conditions, 3321 events. 1740/3321 cut-off events. For 3850/3850 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 21825 event pairs, 888 based on Foata normal form. 8/3193 useless extension candidates. Maximal degree in co-relation 9053. Up to 2361 conditions per place. [2024-02-07 19:04:30,870 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 68 selfloop transitions, 26 changer transitions 0/108 dead transitions. [2024-02-07 19:04:30,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 108 transitions, 691 flow [2024-02-07 19:04:30,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 19:04:30,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 19:04:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-02-07 19:04:30,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2024-02-07 19:04:30,875 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 246 flow. Second operand 8 states and 220 transitions. [2024-02-07 19:04:30,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 108 transitions, 691 flow [2024-02-07 19:04:30,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 108 transitions, 646 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:30,883 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 449 flow [2024-02-07 19:04:30,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=449, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-02-07 19:04:30,884 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2024-02-07 19:04:30,884 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 449 flow [2024-02-07 19:04:30,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:30,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:30,885 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 19:04:30,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 19:04:30,885 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:30,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:30,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1790068517, now seen corresponding path program 2 times [2024-02-07 19:04:30,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:30,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277648531] [2024-02-07 19:04:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:30,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:31,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:31,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:31,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277648531] [2024-02-07 19:04:31,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277648531] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:31,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:31,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:31,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805273471] [2024-02-07 19:04:31,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:31,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:31,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:31,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:31,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:31,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:31,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 449 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:31,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:31,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:31,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:31,482 INFO L124 PetriNetUnfolderBase]: 1896/3539 cut-off events. [2024-02-07 19:04:31,483 INFO L125 PetriNetUnfolderBase]: For 5158/5158 co-relation queries the response was YES. [2024-02-07 19:04:31,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10431 conditions, 3539 events. 1896/3539 cut-off events. For 5158/5158 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 23157 event pairs, 901 based on Foata normal form. 8/3427 useless extension candidates. Maximal degree in co-relation 10415. Up to 1946 conditions per place. [2024-02-07 19:04:31,510 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 84 selfloop transitions, 34 changer transitions 0/132 dead transitions. [2024-02-07 19:04:31,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 132 transitions, 936 flow [2024-02-07 19:04:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:31,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 211 transitions. [2024-02-07 19:04:31,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861751152073733 [2024-02-07 19:04:31,512 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 449 flow. Second operand 7 states and 211 transitions. [2024-02-07 19:04:31,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 132 transitions, 936 flow [2024-02-07 19:04:31,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 132 transitions, 912 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-02-07 19:04:31,521 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 550 flow [2024-02-07 19:04:31,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=550, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2024-02-07 19:04:31,521 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2024-02-07 19:04:31,522 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 550 flow [2024-02-07 19:04:31,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:31,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:31,522 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 19:04:31,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-07 19:04:31,523 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:31,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:31,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1187759505, now seen corresponding path program 3 times [2024-02-07 19:04:31,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:31,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032860211] [2024-02-07 19:04:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:31,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:31,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032860211] [2024-02-07 19:04:31,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032860211] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:31,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:31,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:31,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898373157] [2024-02-07 19:04:31,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:31,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:31,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:31,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:31,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:31,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:31,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 550 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:31,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:31,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:31,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:32,146 INFO L124 PetriNetUnfolderBase]: 2188/4156 cut-off events. [2024-02-07 19:04:32,146 INFO L125 PetriNetUnfolderBase]: For 8478/8478 co-relation queries the response was YES. [2024-02-07 19:04:32,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13032 conditions, 4156 events. 2188/4156 cut-off events. For 8478/8478 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 28201 event pairs, 888 based on Foata normal form. 8/4001 useless extension candidates. Maximal degree in co-relation 13013. Up to 2894 conditions per place. [2024-02-07 19:04:32,171 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 92 selfloop transitions, 23 changer transitions 0/129 dead transitions. [2024-02-07 19:04:32,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 129 transitions, 1029 flow [2024-02-07 19:04:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:04:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:04:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-02-07 19:04:32,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-02-07 19:04:32,172 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 550 flow. Second operand 5 states and 160 transitions. [2024-02-07 19:04:32,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 129 transitions, 1029 flow [2024-02-07 19:04:32,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 931 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:32,182 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 644 flow [2024-02-07 19:04:32,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=644, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2024-02-07 19:04:32,183 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 18 predicate places. [2024-02-07 19:04:32,183 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 644 flow [2024-02-07 19:04:32,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:32,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:32,183 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 19:04:32,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-07 19:04:32,184 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:32,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:32,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1347947991, now seen corresponding path program 4 times [2024-02-07 19:04:32,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:32,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694943811] [2024-02-07 19:04:32,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:32,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:32,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:32,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694943811] [2024-02-07 19:04:32,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694943811] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:32,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:32,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:32,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494499299] [2024-02-07 19:04:32,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:32,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:32,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:32,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:32,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:32,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:32,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 644 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:32,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:32,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:32,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:32,760 INFO L124 PetriNetUnfolderBase]: 2340/4474 cut-off events. [2024-02-07 19:04:32,760 INFO L125 PetriNetUnfolderBase]: For 10740/10740 co-relation queries the response was YES. [2024-02-07 19:04:32,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14216 conditions, 4474 events. 2340/4474 cut-off events. For 10740/10740 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 31172 event pairs, 918 based on Foata normal form. 8/4306 useless extension candidates. Maximal degree in co-relation 14196. Up to 2434 conditions per place. [2024-02-07 19:04:32,791 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 94 selfloop transitions, 47 changer transitions 0/155 dead transitions. [2024-02-07 19:04:32,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 155 transitions, 1248 flow [2024-02-07 19:04:32,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 19:04:32,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 19:04:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 239 transitions. [2024-02-07 19:04:32,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48185483870967744 [2024-02-07 19:04:32,793 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 644 flow. Second operand 8 states and 239 transitions. [2024-02-07 19:04:32,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 155 transitions, 1248 flow [2024-02-07 19:04:32,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 155 transitions, 1193 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:32,810 INFO L231 Difference]: Finished difference. Result has 95 places, 99 transitions, 828 flow [2024-02-07 19:04:32,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=828, PETRI_PLACES=95, PETRI_TRANSITIONS=99} [2024-02-07 19:04:32,811 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 27 predicate places. [2024-02-07 19:04:32,811 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 99 transitions, 828 flow [2024-02-07 19:04:32,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:32,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:32,811 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] [2024-02-07 19:04:32,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-07 19:04:32,812 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:32,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash -155658922, now seen corresponding path program 1 times [2024-02-07 19:04:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:32,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793181469] [2024-02-07 19:04:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:32,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:32,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:32,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793181469] [2024-02-07 19:04:32,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793181469] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:32,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:32,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:32,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360398111] [2024-02-07 19:04:32,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:32,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:32,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:32,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:32,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:32,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:32,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 99 transitions, 828 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:32,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:32,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:32,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:33,441 INFO L124 PetriNetUnfolderBase]: 2452/4680 cut-off events. [2024-02-07 19:04:33,441 INFO L125 PetriNetUnfolderBase]: For 15395/15395 co-relation queries the response was YES. [2024-02-07 19:04:33,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15904 conditions, 4680 events. 2452/4680 cut-off events. For 15395/15395 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 32881 event pairs, 630 based on Foata normal form. 4/4487 useless extension candidates. Maximal degree in co-relation 15880. Up to 3177 conditions per place. [2024-02-07 19:04:33,477 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 124 selfloop transitions, 16 changer transitions 0/154 dead transitions. [2024-02-07 19:04:33,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 154 transitions, 1354 flow [2024-02-07 19:04:33,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:33,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-02-07 19:04:33,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-07 19:04:33,479 INFO L175 Difference]: Start difference. First operand has 95 places, 99 transitions, 828 flow. Second operand 6 states and 186 transitions. [2024-02-07 19:04:33,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 154 transitions, 1354 flow [2024-02-07 19:04:33,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 1260 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:33,500 INFO L231 Difference]: Finished difference. Result has 99 places, 103 transitions, 817 flow [2024-02-07 19:04:33,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=817, PETRI_PLACES=99, PETRI_TRANSITIONS=103} [2024-02-07 19:04:33,501 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 31 predicate places. [2024-02-07 19:04:33,501 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 103 transitions, 817 flow [2024-02-07 19:04:33,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:33,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:33,502 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] [2024-02-07 19:04:33,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-07 19:04:33,502 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:33,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash -586349988, now seen corresponding path program 2 times [2024-02-07 19:04:33,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:33,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937842328] [2024-02-07 19:04:33,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:33,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:33,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:33,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937842328] [2024-02-07 19:04:33,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937842328] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:33,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:33,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:04:33,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784640223] [2024-02-07 19:04:33,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:33,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:04:33,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:33,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:04:33,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:04:33,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:33,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 103 transitions, 817 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:33,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:33,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:33,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:33,980 INFO L124 PetriNetUnfolderBase]: 2444/4671 cut-off events. [2024-02-07 19:04:33,980 INFO L125 PetriNetUnfolderBase]: For 13266/13266 co-relation queries the response was YES. [2024-02-07 19:04:34,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15531 conditions, 4671 events. 2444/4671 cut-off events. For 13266/13266 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 32873 event pairs, 578 based on Foata normal form. 4/4467 useless extension candidates. Maximal degree in co-relation 15505. Up to 3173 conditions per place. [2024-02-07 19:04:34,018 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 114 selfloop transitions, 16 changer transitions 0/144 dead transitions. [2024-02-07 19:04:34,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 144 transitions, 1258 flow [2024-02-07 19:04:34,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:04:34,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:04:34,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-02-07 19:04:34,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-07 19:04:34,020 INFO L175 Difference]: Start difference. First operand has 99 places, 103 transitions, 817 flow. Second operand 5 states and 155 transitions. [2024-02-07 19:04:34,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 144 transitions, 1258 flow [2024-02-07 19:04:34,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 144 transitions, 1235 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:34,044 INFO L231 Difference]: Finished difference. Result has 103 places, 103 transitions, 831 flow [2024-02-07 19:04:34,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=831, PETRI_PLACES=103, PETRI_TRANSITIONS=103} [2024-02-07 19:04:34,044 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 35 predicate places. [2024-02-07 19:04:34,045 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 103 transitions, 831 flow [2024-02-07 19:04:34,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:34,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:34,045 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] [2024-02-07 19:04:34,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-07 19:04:34,045 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:34,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:34,046 INFO L85 PathProgramCache]: Analyzing trace with hash 768938189, now seen corresponding path program 1 times [2024-02-07 19:04:34,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:34,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726454289] [2024-02-07 19:04:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:34,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:34,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:34,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726454289] [2024-02-07 19:04:34,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726454289] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:34,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:34,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:34,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395047578] [2024-02-07 19:04:34,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:34,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:34,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:34,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:34,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:34,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 62 [2024-02-07 19:04:34,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 103 transitions, 831 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 19:04:34,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:34,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 62 [2024-02-07 19:04:34,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:34,506 INFO L124 PetriNetUnfolderBase]: 1796/2971 cut-off events. [2024-02-07 19:04:34,506 INFO L125 PetriNetUnfolderBase]: For 10378/10378 co-relation queries the response was YES. [2024-02-07 19:04:34,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11081 conditions, 2971 events. 1796/2971 cut-off events. For 10378/10378 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 16375 event pairs, 162 based on Foata normal form. 120/3063 useless extension candidates. Maximal degree in co-relation 11054. Up to 1040 conditions per place. [2024-02-07 19:04:34,526 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 164 selfloop transitions, 11 changer transitions 1/190 dead transitions. [2024-02-07 19:04:34,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 190 transitions, 1884 flow [2024-02-07 19:04:34,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-02-07 19:04:34,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2024-02-07 19:04:34,528 INFO L175 Difference]: Start difference. First operand has 103 places, 103 transitions, 831 flow. Second operand 6 states and 165 transitions. [2024-02-07 19:04:34,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 190 transitions, 1884 flow [2024-02-07 19:04:34,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 190 transitions, 1746 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-02-07 19:04:34,542 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 794 flow [2024-02-07 19:04:34,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=794, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-02-07 19:04:34,543 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 34 predicate places. [2024-02-07 19:04:34,543 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 794 flow [2024-02-07 19:04:34,543 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 19:04:34,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:34,543 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 19:04:34,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-07 19:04:34,544 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:34,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:34,544 INFO L85 PathProgramCache]: Analyzing trace with hash 822856519, now seen corresponding path program 1 times [2024-02-07 19:04:34,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:34,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903001695] [2024-02-07 19:04:34,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:34,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:34,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:34,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903001695] [2024-02-07 19:04:34,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903001695] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:34,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:34,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:34,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944365514] [2024-02-07 19:04:34,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:34,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 19:04:34,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:34,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 19:04:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-02-07 19:04:34,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:34,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 794 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:34,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:34,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:34,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:35,164 INFO L124 PetriNetUnfolderBase]: 1834/3250 cut-off events. [2024-02-07 19:04:35,165 INFO L125 PetriNetUnfolderBase]: For 10007/10007 co-relation queries the response was YES. [2024-02-07 19:04:35,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11767 conditions, 3250 events. 1834/3250 cut-off events. For 10007/10007 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 20061 event pairs, 349 based on Foata normal form. 8/3221 useless extension candidates. Maximal degree in co-relation 11743. Up to 1907 conditions per place. [2024-02-07 19:04:35,188 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 144 selfloop transitions, 29 changer transitions 0/187 dead transitions. [2024-02-07 19:04:35,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 187 transitions, 1619 flow [2024-02-07 19:04:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 19:04:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 19:04:35,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2024-02-07 19:04:35,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-02-07 19:04:35,191 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 794 flow. Second operand 10 states and 279 transitions. [2024-02-07 19:04:35,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 187 transitions, 1619 flow [2024-02-07 19:04:35,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 187 transitions, 1426 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-02-07 19:04:35,213 INFO L231 Difference]: Finished difference. Result has 107 places, 110 transitions, 864 flow [2024-02-07 19:04:35,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=864, PETRI_PLACES=107, PETRI_TRANSITIONS=110} [2024-02-07 19:04:35,214 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 39 predicate places. [2024-02-07 19:04:35,214 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 110 transitions, 864 flow [2024-02-07 19:04:35,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:35,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:35,215 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 19:04:35,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-07 19:04:35,215 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:35,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:35,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1224556191, now seen corresponding path program 2 times [2024-02-07 19:04:35,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:35,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322982080] [2024-02-07 19:04:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:35,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:35,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:35,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322982080] [2024-02-07 19:04:35,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322982080] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:35,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:35,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 19:04:35,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346904445] [2024-02-07 19:04:35,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:35,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 19:04:35,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:35,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 19:04:35,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-02-07 19:04:35,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:35,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 864 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:35,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:35,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:35,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:35,752 INFO L124 PetriNetUnfolderBase]: 2170/3962 cut-off events. [2024-02-07 19:04:35,752 INFO L125 PetriNetUnfolderBase]: For 10730/10730 co-relation queries the response was YES. [2024-02-07 19:04:35,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12793 conditions, 3962 events. 2170/3962 cut-off events. For 10730/10730 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 25758 event pairs, 770 based on Foata normal form. 8/3901 useless extension candidates. Maximal degree in co-relation 12769. Up to 1264 conditions per place. [2024-02-07 19:04:35,776 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 154 selfloop transitions, 31 changer transitions 0/199 dead transitions. [2024-02-07 19:04:35,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 199 transitions, 1598 flow [2024-02-07 19:04:35,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 19:04:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 19:04:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 244 transitions. [2024-02-07 19:04:35,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49193548387096775 [2024-02-07 19:04:35,778 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 864 flow. Second operand 8 states and 244 transitions. [2024-02-07 19:04:35,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 199 transitions, 1598 flow [2024-02-07 19:04:35,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 199 transitions, 1508 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:35,794 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 859 flow [2024-02-07 19:04:35,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=859, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2024-02-07 19:04:35,795 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 44 predicate places. [2024-02-07 19:04:35,795 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 859 flow [2024-02-07 19:04:35,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:35,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:35,796 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 19:04:35,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-07 19:04:35,796 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:35,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:35,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1798919061, now seen corresponding path program 3 times [2024-02-07 19:04:35,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:35,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733495017] [2024-02-07 19:04:35,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:35,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:35,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:35,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733495017] [2024-02-07 19:04:35,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733495017] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:35,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:35,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:35,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290356272] [2024-02-07 19:04:35,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:35,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 19:04:35,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:35,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 19:04:35,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-07 19:04:35,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:35,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 859 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:35,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:35,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:35,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:36,401 INFO L124 PetriNetUnfolderBase]: 2574/4749 cut-off events. [2024-02-07 19:04:36,402 INFO L125 PetriNetUnfolderBase]: For 13154/13154 co-relation queries the response was YES. [2024-02-07 19:04:36,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14706 conditions, 4749 events. 2574/4749 cut-off events. For 13154/13154 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 32288 event pairs, 582 based on Foata normal form. 8/4669 useless extension candidates. Maximal degree in co-relation 14681. Up to 2749 conditions per place. [2024-02-07 19:04:36,434 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 160 selfloop transitions, 34 changer transitions 0/208 dead transitions. [2024-02-07 19:04:36,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 208 transitions, 1669 flow [2024-02-07 19:04:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-07 19:04:36,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-07 19:04:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 305 transitions. [2024-02-07 19:04:36,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472140762463343 [2024-02-07 19:04:36,436 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 859 flow. Second operand 11 states and 305 transitions. [2024-02-07 19:04:36,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 208 transitions, 1669 flow [2024-02-07 19:04:36,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 208 transitions, 1585 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-02-07 19:04:36,456 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 940 flow [2024-02-07 19:04:36,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=940, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2024-02-07 19:04:36,457 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 53 predicate places. [2024-02-07 19:04:36,457 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 940 flow [2024-02-07 19:04:36,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:36,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:36,457 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 19:04:36,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-02-07 19:04:36,458 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:36,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:36,458 INFO L85 PathProgramCache]: Analyzing trace with hash -184849043, now seen corresponding path program 4 times [2024-02-07 19:04:36,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:36,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338062622] [2024-02-07 19:04:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:36,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:36,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:36,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338062622] [2024-02-07 19:04:36,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338062622] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:36,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:36,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:36,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529672661] [2024-02-07 19:04:36,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:36,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 19:04:36,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:36,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 19:04:36,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-02-07 19:04:36,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:36,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 940 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:36,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:36,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:36,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:37,245 INFO L124 PetriNetUnfolderBase]: 2782/5154 cut-off events. [2024-02-07 19:04:37,246 INFO L125 PetriNetUnfolderBase]: For 15215/15215 co-relation queries the response was YES. [2024-02-07 19:04:37,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16154 conditions, 5154 events. 2782/5154 cut-off events. For 15215/15215 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 35511 event pairs, 577 based on Foata normal form. 8/5061 useless extension candidates. Maximal degree in co-relation 16126. Up to 2459 conditions per place. [2024-02-07 19:04:37,286 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 192 selfloop transitions, 38 changer transitions 0/244 dead transitions. [2024-02-07 19:04:37,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 244 transitions, 1948 flow [2024-02-07 19:04:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-07 19:04:37,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-07 19:04:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 368 transitions. [2024-02-07 19:04:37,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.456575682382134 [2024-02-07 19:04:37,289 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 940 flow. Second operand 13 states and 368 transitions. [2024-02-07 19:04:37,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 244 transitions, 1948 flow [2024-02-07 19:04:37,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 244 transitions, 1875 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-02-07 19:04:37,319 INFO L231 Difference]: Finished difference. Result has 134 places, 124 transitions, 1029 flow [2024-02-07 19:04:37,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1029, PETRI_PLACES=134, PETRI_TRANSITIONS=124} [2024-02-07 19:04:37,320 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 66 predicate places. [2024-02-07 19:04:37,320 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 124 transitions, 1029 flow [2024-02-07 19:04:37,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:37,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:37,321 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 19:04:37,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-07 19:04:37,321 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:37,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:37,322 INFO L85 PathProgramCache]: Analyzing trace with hash -676392823, now seen corresponding path program 5 times [2024-02-07 19:04:37,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:37,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961663950] [2024-02-07 19:04:37,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:37,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:37,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:37,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961663950] [2024-02-07 19:04:37,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961663950] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:37,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:37,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:37,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254526098] [2024-02-07 19:04:37,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:37,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:37,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:37,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:37,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:37,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:37,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 124 transitions, 1029 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:37,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:37,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:37,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:38,033 INFO L124 PetriNetUnfolderBase]: 3175/5946 cut-off events. [2024-02-07 19:04:38,033 INFO L125 PetriNetUnfolderBase]: For 20818/20818 co-relation queries the response was YES. [2024-02-07 19:04:38,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18540 conditions, 5946 events. 3175/5946 cut-off events. For 20818/20818 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 42749 event pairs, 938 based on Foata normal form. 8/5804 useless extension candidates. Maximal degree in co-relation 18508. Up to 2403 conditions per place. [2024-02-07 19:04:38,069 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 145 selfloop transitions, 42 changer transitions 0/201 dead transitions. [2024-02-07 19:04:38,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 201 transitions, 1775 flow [2024-02-07 19:04:38,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:38,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-02-07 19:04:38,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48847926267281105 [2024-02-07 19:04:38,071 INFO L175 Difference]: Start difference. First operand has 134 places, 124 transitions, 1029 flow. Second operand 7 states and 212 transitions. [2024-02-07 19:04:38,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 201 transitions, 1775 flow [2024-02-07 19:04:38,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 201 transitions, 1672 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-02-07 19:04:38,105 INFO L231 Difference]: Finished difference. Result has 136 places, 126 transitions, 1059 flow [2024-02-07 19:04:38,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1059, PETRI_PLACES=136, PETRI_TRANSITIONS=126} [2024-02-07 19:04:38,106 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 68 predicate places. [2024-02-07 19:04:38,106 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 126 transitions, 1059 flow [2024-02-07 19:04:38,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:38,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:38,106 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 19:04:38,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-02-07 19:04:38,107 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:38,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:38,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1758261539, now seen corresponding path program 6 times [2024-02-07 19:04:38,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:38,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540412624] [2024-02-07 19:04:38,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:38,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:38,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:38,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540412624] [2024-02-07 19:04:38,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540412624] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:38,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:38,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:38,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549880001] [2024-02-07 19:04:38,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:38,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:38,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:38,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:38,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:38,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:38,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 126 transitions, 1059 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:38,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:38,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:38,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:38,874 INFO L124 PetriNetUnfolderBase]: 3652/6957 cut-off events. [2024-02-07 19:04:38,874 INFO L125 PetriNetUnfolderBase]: For 25352/25352 co-relation queries the response was YES. [2024-02-07 19:04:38,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21334 conditions, 6957 events. 3652/6957 cut-off events. For 25352/25352 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 52363 event pairs, 1082 based on Foata normal form. 8/6773 useless extension candidates. Maximal degree in co-relation 21299. Up to 2460 conditions per place. [2024-02-07 19:04:38,925 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 144 selfloop transitions, 41 changer transitions 0/199 dead transitions. [2024-02-07 19:04:38,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 199 transitions, 1776 flow [2024-02-07 19:04:38,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:38,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:38,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-02-07 19:04:38,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48847926267281105 [2024-02-07 19:04:38,927 INFO L175 Difference]: Start difference. First operand has 136 places, 126 transitions, 1059 flow. Second operand 7 states and 212 transitions. [2024-02-07 19:04:38,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 199 transitions, 1776 flow [2024-02-07 19:04:38,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 199 transitions, 1705 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:38,969 INFO L231 Difference]: Finished difference. Result has 143 places, 128 transitions, 1141 flow [2024-02-07 19:04:38,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1141, PETRI_PLACES=143, PETRI_TRANSITIONS=128} [2024-02-07 19:04:38,969 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 75 predicate places. [2024-02-07 19:04:38,970 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 128 transitions, 1141 flow [2024-02-07 19:04:38,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:38,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:38,970 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 19:04:38,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-07 19:04:38,970 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:38,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:38,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1606559873, now seen corresponding path program 7 times [2024-02-07 19:04:38,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:38,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771418263] [2024-02-07 19:04:38,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:38,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:39,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:39,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771418263] [2024-02-07 19:04:39,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771418263] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:39,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:39,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:39,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838630449] [2024-02-07 19:04:39,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:39,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:39,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:39,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:39,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:39,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 128 transitions, 1141 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:39,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:39,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:39,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:39,841 INFO L124 PetriNetUnfolderBase]: 3640/6953 cut-off events. [2024-02-07 19:04:39,842 INFO L125 PetriNetUnfolderBase]: For 27622/27622 co-relation queries the response was YES. [2024-02-07 19:04:39,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21719 conditions, 6953 events. 3640/6953 cut-off events. For 27622/27622 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 52565 event pairs, 1046 based on Foata normal form. 8/6763 useless extension candidates. Maximal degree in co-relation 21681. Up to 2460 conditions per place. [2024-02-07 19:04:39,922 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 157 selfloop transitions, 39 changer transitions 0/210 dead transitions. [2024-02-07 19:04:39,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 210 transitions, 1920 flow [2024-02-07 19:04:39,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:39,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-02-07 19:04:39,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-07 19:04:39,924 INFO L175 Difference]: Start difference. First operand has 143 places, 128 transitions, 1141 flow. Second operand 7 states and 217 transitions. [2024-02-07 19:04:39,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 210 transitions, 1920 flow [2024-02-07 19:04:39,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 210 transitions, 1809 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-02-07 19:04:39,997 INFO L231 Difference]: Finished difference. Result has 148 places, 129 transitions, 1159 flow [2024-02-07 19:04:39,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1159, PETRI_PLACES=148, PETRI_TRANSITIONS=129} [2024-02-07 19:04:39,998 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 80 predicate places. [2024-02-07 19:04:39,998 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 129 transitions, 1159 flow [2024-02-07 19:04:39,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:39,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:39,999 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 19:04:39,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-07 19:04:39,999 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:39,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:39,999 INFO L85 PathProgramCache]: Analyzing trace with hash -806959853, now seen corresponding path program 8 times [2024-02-07 19:04:40,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:40,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654489574] [2024-02-07 19:04:40,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:40,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:40,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:40,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654489574] [2024-02-07 19:04:40,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654489574] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:40,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:40,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:40,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928751228] [2024-02-07 19:04:40,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:40,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 19:04:40,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:40,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 19:04:40,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-07 19:04:40,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:40,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 129 transitions, 1159 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:40,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:40,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:40,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:41,225 INFO L124 PetriNetUnfolderBase]: 4470/8601 cut-off events. [2024-02-07 19:04:41,226 INFO L125 PetriNetUnfolderBase]: For 27761/27761 co-relation queries the response was YES. [2024-02-07 19:04:41,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25981 conditions, 8601 events. 4470/8601 cut-off events. For 27761/27761 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 68012 event pairs, 1280 based on Foata normal form. 16/8385 useless extension candidates. Maximal degree in co-relation 25941. Up to 4451 conditions per place. [2024-02-07 19:04:41,279 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 190 selfloop transitions, 49 changer transitions 0/253 dead transitions. [2024-02-07 19:04:41,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 253 transitions, 2295 flow [2024-02-07 19:04:41,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 19:04:41,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 19:04:41,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 336 transitions. [2024-02-07 19:04:41,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-02-07 19:04:41,281 INFO L175 Difference]: Start difference. First operand has 148 places, 129 transitions, 1159 flow. Second operand 12 states and 336 transitions. [2024-02-07 19:04:41,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 253 transitions, 2295 flow [2024-02-07 19:04:41,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 253 transitions, 2201 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:41,335 INFO L231 Difference]: Finished difference. Result has 160 places, 144 transitions, 1392 flow [2024-02-07 19:04:41,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1392, PETRI_PLACES=160, PETRI_TRANSITIONS=144} [2024-02-07 19:04:41,336 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 92 predicate places. [2024-02-07 19:04:41,336 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 144 transitions, 1392 flow [2024-02-07 19:04:41,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:41,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:41,337 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 19:04:41,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-07 19:04:41,337 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:41,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:41,338 INFO L85 PathProgramCache]: Analyzing trace with hash 760829165, now seen corresponding path program 9 times [2024-02-07 19:04:41,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:41,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837611613] [2024-02-07 19:04:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:41,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:41,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:41,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837611613] [2024-02-07 19:04:41,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837611613] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:41,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:41,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:41,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198792893] [2024-02-07 19:04:41,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:41,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:41,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:41,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:41,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:41,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:41,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 144 transitions, 1392 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:41,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:41,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:41,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:42,301 INFO L124 PetriNetUnfolderBase]: 4678/8969 cut-off events. [2024-02-07 19:04:42,301 INFO L125 PetriNetUnfolderBase]: For 32926/32926 co-relation queries the response was YES. [2024-02-07 19:04:42,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27697 conditions, 8969 events. 4678/8969 cut-off events. For 32926/32926 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 71123 event pairs, 1567 based on Foata normal form. 8/8718 useless extension candidates. Maximal degree in co-relation 27652. Up to 6060 conditions per place. [2024-02-07 19:04:42,414 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 146 selfloop transitions, 53 changer transitions 0/213 dead transitions. [2024-02-07 19:04:42,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 213 transitions, 2165 flow [2024-02-07 19:04:42,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 19:04:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 19:04:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-02-07 19:04:42,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-07 19:04:42,416 INFO L175 Difference]: Start difference. First operand has 160 places, 144 transitions, 1392 flow. Second operand 9 states and 248 transitions. [2024-02-07 19:04:42,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 213 transitions, 2165 flow [2024-02-07 19:04:42,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 213 transitions, 2059 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:42,497 INFO L231 Difference]: Finished difference. Result has 169 places, 148 transitions, 1485 flow [2024-02-07 19:04:42,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1485, PETRI_PLACES=169, PETRI_TRANSITIONS=148} [2024-02-07 19:04:42,502 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 101 predicate places. [2024-02-07 19:04:42,502 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 148 transitions, 1485 flow [2024-02-07 19:04:42,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:42,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:42,503 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 19:04:42,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-02-07 19:04:42,503 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:42,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:42,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1063082885, now seen corresponding path program 10 times [2024-02-07 19:04:42,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:42,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062897874] [2024-02-07 19:04:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:42,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:42,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:42,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062897874] [2024-02-07 19:04:42,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062897874] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:42,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:42,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:42,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603186097] [2024-02-07 19:04:42,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:42,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:42,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:42,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:42,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:42,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:42,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 148 transitions, 1485 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:42,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:42,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:42,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:43,633 INFO L124 PetriNetUnfolderBase]: 5608/10953 cut-off events. [2024-02-07 19:04:43,634 INFO L125 PetriNetUnfolderBase]: For 39638/39638 co-relation queries the response was YES. [2024-02-07 19:04:43,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32576 conditions, 10953 events. 5608/10953 cut-off events. For 39638/39638 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 91637 event pairs, 1111 based on Foata normal form. 16/10628 useless extension candidates. Maximal degree in co-relation 32528. Up to 2479 conditions per place. [2024-02-07 19:04:43,743 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 170 selfloop transitions, 75 changer transitions 0/259 dead transitions. [2024-02-07 19:04:43,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 259 transitions, 2548 flow [2024-02-07 19:04:43,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 19:04:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 19:04:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 297 transitions. [2024-02-07 19:04:43,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790322580645161 [2024-02-07 19:04:43,744 INFO L175 Difference]: Start difference. First operand has 169 places, 148 transitions, 1485 flow. Second operand 10 states and 297 transitions. [2024-02-07 19:04:43,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 259 transitions, 2548 flow [2024-02-07 19:04:43,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 259 transitions, 2282 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-02-07 19:04:43,835 INFO L231 Difference]: Finished difference. Result has 175 places, 153 transitions, 1544 flow [2024-02-07 19:04:43,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1544, PETRI_PLACES=175, PETRI_TRANSITIONS=153} [2024-02-07 19:04:43,836 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 107 predicate places. [2024-02-07 19:04:43,836 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 153 transitions, 1544 flow [2024-02-07 19:04:43,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:43,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:43,837 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 19:04:43,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-02-07 19:04:43,837 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:43,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:43,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1761905087, now seen corresponding path program 11 times [2024-02-07 19:04:43,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:43,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198560545] [2024-02-07 19:04:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:43,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:43,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:43,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198560545] [2024-02-07 19:04:43,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198560545] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:43,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:43,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:43,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559965101] [2024-02-07 19:04:43,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:43,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:43,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:43,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:43,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:43,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:43,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 153 transitions, 1544 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:43,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:43,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:43,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:44,944 INFO L124 PetriNetUnfolderBase]: 5584/10945 cut-off events. [2024-02-07 19:04:44,944 INFO L125 PetriNetUnfolderBase]: For 35056/35056 co-relation queries the response was YES. [2024-02-07 19:04:45,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32525 conditions, 10945 events. 5584/10945 cut-off events. For 35056/35056 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 91785 event pairs, 1063 based on Foata normal form. 16/10620 useless extension candidates. Maximal degree in co-relation 32475. Up to 2145 conditions per place. [2024-02-07 19:04:45,047 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 176 selfloop transitions, 75 changer transitions 0/265 dead transitions. [2024-02-07 19:04:45,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 265 transitions, 2600 flow [2024-02-07 19:04:45,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 19:04:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 19:04:45,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 301 transitions. [2024-02-07 19:04:45,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4854838709677419 [2024-02-07 19:04:45,049 INFO L175 Difference]: Start difference. First operand has 175 places, 153 transitions, 1544 flow. Second operand 10 states and 301 transitions. [2024-02-07 19:04:45,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 265 transitions, 2600 flow [2024-02-07 19:04:45,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 265 transitions, 2442 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-02-07 19:04:45,177 INFO L231 Difference]: Finished difference. Result has 182 places, 155 transitions, 1636 flow [2024-02-07 19:04:45,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1636, PETRI_PLACES=182, PETRI_TRANSITIONS=155} [2024-02-07 19:04:45,178 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 114 predicate places. [2024-02-07 19:04:45,179 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 155 transitions, 1636 flow [2024-02-07 19:04:45,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:45,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:45,179 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 19:04:45,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-02-07 19:04:45,179 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:45,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:45,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1606082595, now seen corresponding path program 12 times [2024-02-07 19:04:45,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:45,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347464423] [2024-02-07 19:04:45,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:45,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:45,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:45,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347464423] [2024-02-07 19:04:45,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347464423] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:45,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:45,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:45,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388437583] [2024-02-07 19:04:45,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:45,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:45,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:45,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:45,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:45,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:45,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 155 transitions, 1636 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:45,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:45,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:45,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:46,332 INFO L124 PetriNetUnfolderBase]: 5572/10891 cut-off events. [2024-02-07 19:04:46,332 INFO L125 PetriNetUnfolderBase]: For 33397/33397 co-relation queries the response was YES. [2024-02-07 19:04:46,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32257 conditions, 10891 events. 5572/10891 cut-off events. For 33397/33397 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 91308 event pairs, 1779 based on Foata normal form. 8/10552 useless extension candidates. Maximal degree in co-relation 32205. Up to 2996 conditions per place. [2024-02-07 19:04:46,458 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 175 selfloop transitions, 49 changer transitions 0/238 dead transitions. [2024-02-07 19:04:46,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 238 transitions, 2448 flow [2024-02-07 19:04:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:46,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-02-07 19:04:46,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023041474654378 [2024-02-07 19:04:46,459 INFO L175 Difference]: Start difference. First operand has 182 places, 155 transitions, 1636 flow. Second operand 7 states and 218 transitions. [2024-02-07 19:04:46,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 238 transitions, 2448 flow [2024-02-07 19:04:46,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 238 transitions, 2286 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-02-07 19:04:46,596 INFO L231 Difference]: Finished difference. Result has 183 places, 155 transitions, 1589 flow [2024-02-07 19:04:46,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1589, PETRI_PLACES=183, PETRI_TRANSITIONS=155} [2024-02-07 19:04:46,596 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 115 predicate places. [2024-02-07 19:04:46,596 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 155 transitions, 1589 flow [2024-02-07 19:04:46,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:46,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:46,597 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 19:04:46,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-07 19:04:46,597 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:46,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:46,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1035753145, now seen corresponding path program 13 times [2024-02-07 19:04:46,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:46,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264729560] [2024-02-07 19:04:46,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:46,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:46,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:46,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264729560] [2024-02-07 19:04:46,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264729560] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:46,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:46,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:46,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270563910] [2024-02-07 19:04:46,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:46,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 19:04:46,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:46,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 19:04:46,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-02-07 19:04:46,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:46,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 155 transitions, 1589 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:46,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:46,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:46,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:47,863 INFO L124 PetriNetUnfolderBase]: 5917/11584 cut-off events. [2024-02-07 19:04:47,864 INFO L125 PetriNetUnfolderBase]: For 29428/29428 co-relation queries the response was YES. [2024-02-07 19:04:48,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33372 conditions, 11584 events. 5917/11584 cut-off events. For 29428/29428 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 98049 event pairs, 2091 based on Foata normal form. 8/11248 useless extension candidates. Maximal degree in co-relation 33320. Up to 7107 conditions per place. [2024-02-07 19:04:48,035 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 194 selfloop transitions, 57 changer transitions 0/265 dead transitions. [2024-02-07 19:04:48,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 265 transitions, 2584 flow [2024-02-07 19:04:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 19:04:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 19:04:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 333 transitions. [2024-02-07 19:04:48,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475806451612903 [2024-02-07 19:04:48,037 INFO L175 Difference]: Start difference. First operand has 183 places, 155 transitions, 1589 flow. Second operand 12 states and 333 transitions. [2024-02-07 19:04:48,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 265 transitions, 2584 flow [2024-02-07 19:04:48,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 265 transitions, 2459 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-02-07 19:04:48,132 INFO L231 Difference]: Finished difference. Result has 189 places, 160 transitions, 1651 flow [2024-02-07 19:04:48,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1651, PETRI_PLACES=189, PETRI_TRANSITIONS=160} [2024-02-07 19:04:48,132 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 121 predicate places. [2024-02-07 19:04:48,133 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 160 transitions, 1651 flow [2024-02-07 19:04:48,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:48,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:48,133 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 19:04:48,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-07 19:04:48,133 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:48,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:48,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1308272175, now seen corresponding path program 14 times [2024-02-07 19:04:48,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:48,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287992277] [2024-02-07 19:04:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:48,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:48,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:48,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287992277] [2024-02-07 19:04:48,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287992277] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:48,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:48,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:48,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442156031] [2024-02-07 19:04:48,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:48,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 19:04:48,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:48,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 19:04:48,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-02-07 19:04:48,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:48,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 160 transitions, 1651 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:48,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:48,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:48,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:49,374 INFO L124 PetriNetUnfolderBase]: 5905/11548 cut-off events. [2024-02-07 19:04:49,374 INFO L125 PetriNetUnfolderBase]: For 28956/28956 co-relation queries the response was YES. [2024-02-07 19:04:49,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33549 conditions, 11548 events. 5905/11548 cut-off events. For 28956/28956 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 97631 event pairs, 2059 based on Foata normal form. 8/11212 useless extension candidates. Maximal degree in co-relation 33499. Up to 7087 conditions per place. [2024-02-07 19:04:49,525 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 209 selfloop transitions, 57 changer transitions 0/280 dead transitions. [2024-02-07 19:04:49,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 280 transitions, 2726 flow [2024-02-07 19:04:49,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 19:04:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 19:04:49,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 340 transitions. [2024-02-07 19:04:49,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45698924731182794 [2024-02-07 19:04:49,527 INFO L175 Difference]: Start difference. First operand has 189 places, 160 transitions, 1651 flow. Second operand 12 states and 340 transitions. [2024-02-07 19:04:49,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 280 transitions, 2726 flow [2024-02-07 19:04:49,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 280 transitions, 2666 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:49,622 INFO L231 Difference]: Finished difference. Result has 201 places, 164 transitions, 1793 flow [2024-02-07 19:04:49,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1793, PETRI_PLACES=201, PETRI_TRANSITIONS=164} [2024-02-07 19:04:49,623 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 133 predicate places. [2024-02-07 19:04:49,623 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 164 transitions, 1793 flow [2024-02-07 19:04:49,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:49,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:49,624 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 19:04:49,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-07 19:04:49,624 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:49,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:49,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1350786337, now seen corresponding path program 15 times [2024-02-07 19:04:49,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:49,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284706711] [2024-02-07 19:04:49,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:49,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:49,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:49,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284706711] [2024-02-07 19:04:49,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284706711] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:49,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:49,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:49,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511323674] [2024-02-07 19:04:49,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:49,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 19:04:49,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:49,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 19:04:49,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-07 19:04:49,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 19:04:49,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 164 transitions, 1793 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:49,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:49,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 19:04:49,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:50,987 INFO L124 PetriNetUnfolderBase]: 6113/11958 cut-off events. [2024-02-07 19:04:50,988 INFO L125 PetriNetUnfolderBase]: For 33343/33343 co-relation queries the response was YES. [2024-02-07 19:04:51,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35171 conditions, 11958 events. 6113/11958 cut-off events. For 33343/33343 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 101778 event pairs, 1966 based on Foata normal form. 8/11606 useless extension candidates. Maximal degree in co-relation 35116. Up to 6854 conditions per place. [2024-02-07 19:04:51,177 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 212 selfloop transitions, 59 changer transitions 0/285 dead transitions. [2024-02-07 19:04:51,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 285 transitions, 2869 flow [2024-02-07 19:04:51,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 19:04:51,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 19:04:51,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 342 transitions. [2024-02-07 19:04:51,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596774193548387 [2024-02-07 19:04:51,180 INFO L175 Difference]: Start difference. First operand has 201 places, 164 transitions, 1793 flow. Second operand 12 states and 342 transitions. [2024-02-07 19:04:51,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 285 transitions, 2869 flow [2024-02-07 19:04:51,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 285 transitions, 2737 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:51,292 INFO L231 Difference]: Finished difference. Result has 211 places, 168 transitions, 1850 flow [2024-02-07 19:04:51,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1850, PETRI_PLACES=211, PETRI_TRANSITIONS=168} [2024-02-07 19:04:51,293 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 143 predicate places. [2024-02-07 19:04:51,293 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 168 transitions, 1850 flow [2024-02-07 19:04:51,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:51,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:51,294 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 19:04:51,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-02-07 19:04:51,294 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:04:51,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1062949605, now seen corresponding path program 16 times [2024-02-07 19:04:51,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:51,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254896191] [2024-02-07 19:04:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:51,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:04:51,309 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:04:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:04:51,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:04:51,342 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:04:51,342 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 41 remaining) [2024-02-07 19:04:51,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 41 remaining) [2024-02-07 19:04:51,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 41 remaining) [2024-02-07 19:04:51,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 41 remaining) [2024-02-07 19:04:51,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 41 remaining) [2024-02-07 19:04:51,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 41 remaining) [2024-02-07 19:04:51,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 41 remaining) [2024-02-07 19:04:51,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 41 remaining) [2024-02-07 19:04:51,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 41 remaining) [2024-02-07 19:04:51,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 41 remaining) [2024-02-07 19:04:51,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 41 remaining) [2024-02-07 19:04:51,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 41 remaining) [2024-02-07 19:04:51,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 41 remaining) [2024-02-07 19:04:51,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 41 remaining) [2024-02-07 19:04:51,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 41 remaining) [2024-02-07 19:04:51,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 41 remaining) [2024-02-07 19:04:51,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 41 remaining) [2024-02-07 19:04:51,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 41 remaining) [2024-02-07 19:04:51,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 41 remaining) [2024-02-07 19:04:51,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 41 remaining) [2024-02-07 19:04:51,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 41 remaining) [2024-02-07 19:04:51,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 41 remaining) [2024-02-07 19:04:51,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (18 of 41 remaining) [2024-02-07 19:04:51,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2024-02-07 19:04:51,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2024-02-07 19:04:51,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 41 remaining) [2024-02-07 19:04:51,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 41 remaining) [2024-02-07 19:04:51,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 41 remaining) [2024-02-07 19:04:51,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 41 remaining) [2024-02-07 19:04:51,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 41 remaining) [2024-02-07 19:04:51,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 41 remaining) [2024-02-07 19:04:51,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 41 remaining) [2024-02-07 19:04:51,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 41 remaining) [2024-02-07 19:04:51,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 41 remaining) [2024-02-07 19:04:51,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 41 remaining) [2024-02-07 19:04:51,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 41 remaining) [2024-02-07 19:04:51,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 41 remaining) [2024-02-07 19:04:51,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 41 remaining) [2024-02-07 19:04:51,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 41 remaining) [2024-02-07 19:04:51,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 41 remaining) [2024-02-07 19:04:51,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 41 remaining) [2024-02-07 19:04:51,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-07 19:04:51,352 INFO L445 BasicCegarLoop]: Path program histogram: [16, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:51,357 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 19:04:51,357 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 19:04:51,401 INFO L503 ceAbstractionStarter]: Automizer considered 22 witness invariants [2024-02-07 19:04:51,403 INFO L504 ceAbstractionStarter]: WitnessConsidered=22 [2024-02-07 19:04:51,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 07:04:51 BasicIcfg [2024-02-07 19:04:51,406 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 19:04:51,407 INFO L158 Benchmark]: Toolchain (without parser) took 35331.22ms. Allocated memory was 199.2MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 122.2MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 846.0MB. Max. memory is 16.1GB. [2024-02-07 19:04:51,407 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 199.2MB. Free memory is still 154.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:04:51,407 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 199.2MB. Free memory is still 169.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:04:51,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 688.82ms. Allocated memory is still 199.2MB. Free memory was 122.0MB in the beginning and 154.4MB in the end (delta: -32.5MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2024-02-07 19:04:51,408 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.73ms. Allocated memory is still 199.2MB. Free memory was 154.4MB in the beginning and 151.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:04:51,408 INFO L158 Benchmark]: Boogie Preprocessor took 86.33ms. Allocated memory is still 199.2MB. Free memory was 151.3MB in the beginning and 149.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:04:51,408 INFO L158 Benchmark]: RCFGBuilder took 904.32ms. Allocated memory is still 199.2MB. Free memory was 149.2MB in the beginning and 113.6MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-02-07 19:04:51,408 INFO L158 Benchmark]: TraceAbstraction took 33585.24ms. Allocated memory was 199.2MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 112.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 834.9MB. Max. memory is 16.1GB. [2024-02-07 19:04:51,410 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.18ms. Allocated memory is still 199.2MB. Free memory is still 154.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.23ms. Allocated memory is still 199.2MB. Free memory is still 169.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 688.82ms. Allocated memory is still 199.2MB. Free memory was 122.0MB in the beginning and 154.4MB in the end (delta: -32.5MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.73ms. Allocated memory is still 199.2MB. Free memory was 154.4MB in the beginning and 151.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.33ms. Allocated memory is still 199.2MB. Free memory was 151.3MB in the beginning and 149.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 904.32ms. Allocated memory is still 199.2MB. Free memory was 149.2MB in the beginning and 113.6MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 33585.24ms. Allocated memory was 199.2MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 112.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 834.9MB. 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; [L715] 0 int __unbuffered_p2_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L721] 0 int y = 0; [L780] 0 pthread_t t2339; [L781] FCALL, FORK 0 pthread_create(&t2339, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2339={5:0}, x=0, y=0] [L782] 0 pthread_t t2340; [L783] FCALL, FORK 0 pthread_create(&t2340, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2339={5:0}, t2340={6:0}, x=0, y=0] [L742] 2 y = 2 [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L784] 0 pthread_t t2341; [L785] FCALL, FORK 0 pthread_create(&t2341, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2339={5:0}, t2340={6:0}, t2341={3:0}, x=0, y=2] [L725] 1 y = 1 [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L730] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L730] 1 __unbuffered_p0_EAX = y [L731] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L735] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L735] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L736] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L757] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] [L757] 3 __unbuffered_p2_EAX = x [L758] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L760] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L760] 3 __unbuffered_p2_EBX = y [L761] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EBX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L765] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L765] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L766] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L745] 2 x = 1 [L746] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L750] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L750] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L751] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L787] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L787] 0 main$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=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, 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, t2339={5:0}, t2340={6:0}, t2341={3:0}, x=1, y=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[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EBX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]],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]]]]]],BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EAX]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[127]]],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]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[2]]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, 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, t2339={5:0}, t2340={6:0}, t2341={3:0}, x=1, y=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: 760]: 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: 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. - 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 102 locations, 41 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: 33.3s, OverallIterations: 35, TraceHistogramMax: 1, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.0s, AutomataDifference: 28.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1873 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1871 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5914 IncrementalHoareTripleChecker+Invalid, 5958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 0 mSDtfsCounter, 5914 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1850occurred in iteration=34, InterpolantAutomatonStates: 231, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 703 NumberOfCodeBlocks, 703 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 5085 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 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 19:04:51,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE