./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stack_longest-2.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stack_longest-2.yml/witness.yml --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 59af5db6
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/stack_longest-2.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stack_longest-2.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-59af5db-m
[2024-02-02 09:11:22,023 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-02-02 09:11:22,093 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-02-02 09:11:22,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-02-02 09:11:22,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-02-02 09:11:22,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-02-02 09:11:22,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-02-02 09:11:22,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-02-02 09:11:22,126 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-02-02 09:11:22,129 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-02-02 09:11:22,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-02-02 09:11:22,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-02-02 09:11:22,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-02-02 09:11:22,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-02-02 09:11:22,131 INFO L153 SettingsManager]: * Use SBE=true
[2024-02-02 09:11:22,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-02-02 09:11:22,132 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-02-02 09:11:22,132 INFO L153 SettingsManager]: * sizeof long=4
[2024-02-02 09:11:22,132 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-02-02 09:11:22,132 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-02-02 09:11:22,133 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-02-02 09:11:22,133 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-02-02 09:11:22,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-02-02 09:11:22,133 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-02-02 09:11:22,134 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-02-02 09:11:22,135 INFO L153 SettingsManager]: * sizeof long double=12
[2024-02-02 09:11:22,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-02-02 09:11:22,135 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-02-02 09:11:22,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-02-02 09:11:22,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-02-02 09:11:22,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-02-02 09:11:22,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-02-02 09:11:22,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-02-02 09:11:22,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-02-02 09:11:22,137 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-02-02 09:11:22,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-02-02 09:11:22,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-02-02 09:11:22,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-02-02 09:11:22,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-02-02 09:11:22,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-02-02 09:11:22,138 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2024-02-02 09:11:22,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-02-02 09:11:22,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-02-02 09:11:22,139 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false
[2024-02-02 09:11:22,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-02-02 09:11:22,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-02-02 09:11:22,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-02-02 09:11:22,396 INFO L270 PluginConnector]: Initializing Witness Parser...
[2024-02-02 09:11:22,396 INFO L274 PluginConnector]: Witness Parser initialized
[2024-02-02 09:11:22,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stack_longest-2.yml/witness.yml
[2024-02-02 09:11:22,540 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-02-02 09:11:22,541 INFO L274 PluginConnector]: CDTParser initialized
[2024-02-02 09:11:22,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i
[2024-02-02 09:11:23,644 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-02-02 09:11:23,894 INFO L384 CDTParser]: Found 1 translation units.
[2024-02-02 09:11:23,897 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i
[2024-02-02 09:11:23,917 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b6d5ecc8/16bd1879add840dfa5e4f5a45d3732c6/FLAGfa101d3b7
[2024-02-02 09:11:23,931 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b6d5ecc8/16bd1879add840dfa5e4f5a45d3732c6
[2024-02-02 09:11:23,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-02-02 09:11:23,933 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements.
[2024-02-02 09:11:23,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-02-02 09:11:23,956 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-02-02 09:11:23,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-02-02 09:11:23,960 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:22" (1/2) ...
[2024-02-02 09:11:23,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525ec38a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:23, skipping insertion in model container
[2024-02-02 09:11:23,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:22" (1/2) ...
[2024-02-02 09:11:23,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12083ae9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:23, skipping insertion in model container
[2024-02-02 09:11:23,963 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:23" (2/2) ...
[2024-02-02 09:11:23,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525ec38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:23, skipping insertion in model container
[2024-02-02 09:11:23,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:23" (2/2) ...
[2024-02-02 09:11:23,963 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness
[2024-02-02 09:11:24,010 INFO L99 nessWitnessExtractor]: Found the following entries in the witness:
[2024-02-02 09:11:24,011 INFO L101 nessWitnessExtractor]: Location invariant before [L1000-L1000] (i == 800) && ((unsigned long )arg == 0UL)
[2024-02-02 09:11:24,012 INFO L101 nessWitnessExtractor]: Loop invariant at [L991-L999] (unsigned long )arg == 0UL
[2024-02-02 09:11:24,012 INFO L101 nessWitnessExtractor]: Location invariant before [L993-L993] ((unsigned long )arg == 0UL) && (((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 799))
[2024-02-02 09:11:24,012 INFO L101 nessWitnessExtractor]: Location invariant before [L1020-L1020] flag == (_Bool)0
[2024-02-02 09:11:24,012 INFO L101 nessWitnessExtractor]: Loop invariant at [L1005-L1014] (unsigned long )arg == 0UL
[2024-02-02 09:11:24,012 INFO L101 nessWitnessExtractor]: Location invariant before [L1015-L1015] (i == 800) && ((unsigned long )arg == 0UL)
[2024-02-02 09:11:24,012 INFO L101 nessWitnessExtractor]: Location invariant before [L1008-L1012] ((unsigned long )arg == 0UL) && ((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (8 <= i && i <= 799)) || (0 == i && i == 0)) || i == 7) || i == 6)
[2024-02-02 09:11:24,012 INFO L101 nessWitnessExtractor]: Location invariant before [L1021-L1021] flag == (_Bool)0
[2024-02-02 09:11:24,013 INFO L101 nessWitnessExtractor]: Location invariant before [L1007-L1007] ((unsigned long )arg == 0UL) && ((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (8 <= i && i <= 799)) || (0 == i && i == 0)) || i == 7) || i == 6)
[2024-02-02 09:11:24,013 INFO L101 nessWitnessExtractor]: Location invariant before [L1010-L1011] ((unsigned long )arg == 0UL) && ((((((((((((((((i == 5 || i == 4) || i == 4) || i == 3) || i == 3) || i == 2) || i == 2) || i == 1) || i == 1) || (8 <= i && i <= 799)) || (0 == i && i == 0)) || (8 <= i && i <= 799)) || (0 == i && i == 0)) || i == 7) || i == 7) || i == 6) || i == 6)
[2024-02-02 09:11:24,013 INFO L101 nessWitnessExtractor]: Location invariant after [L1010-L1011] ((unsigned long )arg == 0UL) && ((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (8 <= i && i <= 799)) || (0 == i && i == 0)) || i == 7) || i == 6)
[2024-02-02 09:11:24,013 INFO L101 nessWitnessExtractor]: Location invariant before [L995-L995] ((unsigned long )arg == 0UL) && (((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 799))
[2024-02-02 09:11:24,013 INFO L101 nessWitnessExtractor]: Location invariant before [L996-L997] ((unsigned long )arg == 0UL) && (((((((((((i == 4 || i == 3) || i == 3) || i == 2) || i == 2) || i == 1) || i == 1) || (0 == i && i == 0)) || (0 == i && i == 0)) || (5 <= i && i <= 799)) || (5 <= i && i <= 799)) || i == 4)
[2024-02-02 09:11:24,013 INFO L101 nessWitnessExtractor]: Location invariant after [L996-L997] ((unsigned long )arg == 0UL) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 799)) || i == 4)
[2024-02-02 09:11:24,013 INFO L101 nessWitnessExtractor]: Location invariant before [L1013-L1013] ((unsigned long )arg == 0UL) && ((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (8 <= i && i <= 799)) || (0 == i && i == 0)) || i == 7) || i == 6)
[2024-02-02 09:11:24,013 INFO L101 nessWitnessExtractor]: Location invariant before [L994-L994] ((unsigned long )arg == 0UL) && (((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 799))
[2024-02-02 09:11:24,014 INFO L101 nessWitnessExtractor]: Location invariant before [L998-L998] ((unsigned long )arg == 0UL) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 799)) || i == 4)
[2024-02-02 09:11:24,050 INFO L177 MainTranslator]: Built tables and reachable declarations
[2024-02-02 09:11:24,358 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/stack_longest-2.i[41530,41543]
[2024-02-02 09:11:24,382 INFO L209 PostProcessor]: Analyzing one entry point: main
[2024-02-02 09:11:24,400 INFO L202 MainTranslator]: Completed pre-run
[2024-02-02 09:11:24,444 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/stack_longest-2.i[41530,41543]
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
[2024-02-02 09:11:24,539 INFO L209 PostProcessor]: Analyzing one entry point: main
[2024-02-02 09:11:24,585 INFO L206 MainTranslator]: Completed translation
[2024-02-02 09:11:24,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24 WrapperNode
[2024-02-02 09:11:24,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-02-02 09:11:24,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-02-02 09:11:24,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-02-02 09:11:24,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-02-02 09:11:24,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24" (1/1) ...
[2024-02-02 09:11:24,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24" (1/1) ...
[2024-02-02 09:11:24,673 INFO L138 Inliner]: procedures = 278, calls = 40, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 175
[2024-02-02 09:11:24,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-02-02 09:11:24,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-02-02 09:11:24,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-02-02 09:11:24,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-02-02 09:11:24,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24" (1/1) ...
[2024-02-02 09:11:24,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24" (1/1) ...
[2024-02-02 09:11:24,708 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24" (1/1) ...
[2024-02-02 09:11:24,750 INFO L175 MemorySlicer]: Split 14 memory accesses to 5 slices as follows [2, 5, 3, 2, 2]. 36 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0]. The 4 writes are split as follows [0, 0, 2, 1, 1].
[2024-02-02 09:11:24,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24" (1/1) ...
[2024-02-02 09:11:24,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24" (1/1) ...
[2024-02-02 09:11:24,770 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24" (1/1) ...
[2024-02-02 09:11:24,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24" (1/1) ...
[2024-02-02 09:11:24,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24" (1/1) ...
[2024-02-02 09:11:24,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24" (1/1) ...
[2024-02-02 09:11:24,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-02-02 09:11:24,814 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-02-02 09:11:24,824 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-02-02 09:11:24,824 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-02-02 09:11:24,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24" (1/1) ...
[2024-02-02 09:11:24,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-02-02 09:11:24,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-02 09:11:24,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-02-02 09:11:24,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-02-02 09:11:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure t1
[2024-02-02 09:11:24,926 INFO L138 BoogieDeclarations]: Found implementation of procedure t1
[2024-02-02 09:11:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure t2
[2024-02-02 09:11:24,927 INFO L138 BoogieDeclarations]: Found implementation of procedure t2
[2024-02-02 09:11:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-02-02 09:11:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-02-02 09:11:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock
[2024-02-02 09:11:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-02-02 09:11:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-02-02 09:11:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2
[2024-02-02 09:11:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3
[2024-02-02 09:11:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4
[2024-02-02 09:11:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-02-02 09:11:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-02-02 09:11:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2
[2024-02-02 09:11:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3
[2024-02-02 09:11:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4
[2024-02-02 09:11:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2024-02-02 09:11:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-02-02 09:11:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-02-02 09:11:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-02-02 09:11:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-02-02 09:11:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3
[2024-02-02 09:11:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4
[2024-02-02 09:11:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-02-02 09:11:24,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-02-02 09:11:24,930 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2024-02-02 09:11:25,054 INFO L244 CfgBuilder]: Building ICFG
[2024-02-02 09:11:25,056 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-02-02 09:11:25,312 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program.
[2024-02-02 09:11:25,312 INFO L293 CfgBuilder]: Performing block encoding
[2024-02-02 09:11:25,527 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-02-02 09:11:25,528 INFO L320 CfgBuilder]: Removed 2 assume(true) statements.
[2024-02-02 09:11:25,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:11:25 BoogieIcfgContainer
[2024-02-02 09:11:25,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-02-02 09:11:25,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-02-02 09:11:25,536 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-02-02 09:11:25,539 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-02-02 09:11:25,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:22" (1/4) ...
[2024-02-02 09:11:25,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7db16d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:11:25, skipping insertion in model container
[2024-02-02 09:11:25,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:11:23" (2/4) ...
[2024-02-02 09:11:25,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7db16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:11:25, skipping insertion in model container
[2024-02-02 09:11:25,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24" (3/4) ...
[2024-02-02 09:11:25,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7db16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:11:25, skipping insertion in model container
[2024-02-02 09:11:25,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:11:25" (4/4) ...
[2024-02-02 09:11:25,543 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i
[2024-02-02 09:11:25,557 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-02-02 09:11:25,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations.
[2024-02-02 09:11:25,558 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-02-02 09:11:25,629 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-02-02 09:11:25,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 160 flow
[2024-02-02 09:11:25,697 INFO L124 PetriNetUnfolderBase]: 5/71 cut-off events.
[2024-02-02 09:11:25,698 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-02-02 09:11:25,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 71 events. 5/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 215 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place.
[2024-02-02 09:11:25,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 73 transitions, 160 flow
[2024-02-02 09:11:25,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 69 transitions, 147 flow
[2024-02-02 09:11:25,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-02-02 09:11:25,808 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;@49c16ae7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-02-02 09:11:25,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations.
[2024-02-02 09:11:25,810 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-02-02 09:11:25,810 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events.
[2024-02-02 09:11:25,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-02-02 09:11:25,811 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:25,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2024-02-02 09:11:25,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:25,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:25,820 INFO L85 PathProgramCache]: Analyzing trace with hash 14462, now seen corresponding path program 1 times
[2024-02-02 09:11:25,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:25,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886479439]
[2024-02-02 09:11:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:25,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:26,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:26,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886479439]
[2024-02-02 09:11:26,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886479439] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-02 09:11:26,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-02 09:11:26,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-02-02 09:11:26,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364164]
[2024-02-02 09:11:26,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-02 09:11:26,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-02-02 09:11:26,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:26,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-02-02 09:11:26,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-02-02 09:11:26,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73
[2024-02-02 09:11:26,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:26,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:26,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73
[2024-02-02 09:11:26,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:11:26,381 INFO L124 PetriNetUnfolderBase]: 473/1246 cut-off events.
[2024-02-02 09:11:26,382 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES.
[2024-02-02 09:11:26,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 1246 events. 473/1246 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 8355 event pairs, 357 based on Foata normal form. 48/991 useless extension candidates. Maximal degree in co-relation 1903. Up to 749 conditions per place.
[2024-02-02 09:11:26,394 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 28 selfloop transitions, 1 changer transitions 0/65 dead transitions.
[2024-02-02 09:11:26,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 65 transitions, 197 flow
[2024-02-02 09:11:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-02-02 09:11:26,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-02-02 09:11:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions.
[2024-02-02 09:11:26,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6712328767123288
[2024-02-02 09:11:26,408 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 147 flow. Second operand 3 states and 147 transitions.
[2024-02-02 09:11:26,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 65 transitions, 197 flow
[2024-02-02 09:11:26,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 65 transitions, 192 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-02-02 09:11:26,418 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 136 flow
[2024-02-02 09:11:26,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=68, PETRI_TRANSITIONS=65}
[2024-02-02 09:11:26,423 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places.
[2024-02-02 09:11:26,423 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 136 flow
[2024-02-02 09:11:26,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:26,423 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:26,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-02-02 09:11:26,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-02-02 09:11:26,424 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:26,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:26,427 INFO L85 PathProgramCache]: Analyzing trace with hash 484833197, now seen corresponding path program 1 times
[2024-02-02 09:11:26,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:26,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522821707]
[2024-02-02 09:11:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:26,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:26,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:26,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522821707]
[2024-02-02 09:11:26,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522821707] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-02 09:11:26,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-02 09:11:26,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-02-02 09:11:26,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414569179]
[2024-02-02 09:11:26,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-02 09:11:26,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-02-02 09:11:26,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:26,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-02-02 09:11:26,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-02-02 09:11:26,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73
[2024-02-02 09:11:26,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:26,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:26,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73
[2024-02-02 09:11:26,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:11:26,744 INFO L124 PetriNetUnfolderBase]: 423/1045 cut-off events.
[2024-02-02 09:11:26,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-02-02 09:11:26,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1760 conditions, 1045 events. 423/1045 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6797 event pairs, 9 based on Foata normal form. 44/951 useless extension candidates. Maximal degree in co-relation 1754. Up to 649 conditions per place.
[2024-02-02 09:11:26,750 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 39 selfloop transitions, 2 changer transitions 0/75 dead transitions.
[2024-02-02 09:11:26,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 240 flow
[2024-02-02 09:11:26,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-02-02 09:11:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-02-02 09:11:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions.
[2024-02-02 09:11:26,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6678082191780822
[2024-02-02 09:11:26,756 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 136 flow. Second operand 4 states and 195 transitions.
[2024-02-02 09:11:26,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 240 flow
[2024-02-02 09:11:26,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-02-02 09:11:26,759 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 135 flow
[2024-02-02 09:11:26,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=68, PETRI_TRANSITIONS=63}
[2024-02-02 09:11:26,759 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places.
[2024-02-02 09:11:26,760 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 135 flow
[2024-02-02 09:11:26,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:26,760 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:26,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-02 09:11:26,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-02-02 09:11:26,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:26,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:26,763 INFO L85 PathProgramCache]: Analyzing trace with hash 2068250192, now seen corresponding path program 1 times
[2024-02-02 09:11:26,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:26,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239864177]
[2024-02-02 09:11:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:26,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:26,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:26,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239864177]
[2024-02-02 09:11:26,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239864177] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-02 09:11:26,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-02 09:11:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-02-02 09:11:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185909169]
[2024-02-02 09:11:26,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-02 09:11:26,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-02-02 09:11:26,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:26,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-02-02 09:11:26,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-02-02 09:11:26,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 73
[2024-02-02 09:11:26,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:26,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:26,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 73
[2024-02-02 09:11:26,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:11:27,155 INFO L124 PetriNetUnfolderBase]: 1170/2352 cut-off events.
[2024-02-02 09:11:27,156 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES.
[2024-02-02 09:11:27,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4354 conditions, 2352 events. 1170/2352 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 14724 event pairs, 695 based on Foata normal form. 22/1966 useless extension candidates. Maximal degree in co-relation 4348. Up to 1224 conditions per place.
[2024-02-02 09:11:27,167 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 72 selfloop transitions, 3 changer transitions 0/98 dead transitions.
[2024-02-02 09:11:27,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 98 transitions, 359 flow
[2024-02-02 09:11:27,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-02-02 09:11:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-02-02 09:11:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 190 transitions.
[2024-02-02 09:11:27,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6506849315068494
[2024-02-02 09:11:27,182 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 135 flow. Second operand 4 states and 190 transitions.
[2024-02-02 09:11:27,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 98 transitions, 359 flow
[2024-02-02 09:11:27,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 98 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-02-02 09:11:27,185 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 158 flow
[2024-02-02 09:11:27,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=70, PETRI_TRANSITIONS=64}
[2024-02-02 09:11:27,186 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places.
[2024-02-02 09:11:27,187 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 158 flow
[2024-02-02 09:11:27,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:27,188 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:27,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-02 09:11:27,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-02-02 09:11:27,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:27,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:27,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2068276009, now seen corresponding path program 1 times
[2024-02-02 09:11:27,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:27,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363596360]
[2024-02-02 09:11:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:27,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:27,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:27,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363596360]
[2024-02-02 09:11:27,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363596360] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-02 09:11:27,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-02 09:11:27,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-02-02 09:11:27,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896080973]
[2024-02-02 09:11:27,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-02 09:11:27,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-02-02 09:11:27,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:27,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-02-02 09:11:27,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-02-02 09:11:27,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73
[2024-02-02 09:11:27,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:27,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:27,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73
[2024-02-02 09:11:27,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:11:27,546 INFO L124 PetriNetUnfolderBase]: 705/1650 cut-off events.
[2024-02-02 09:11:27,546 INFO L125 PetriNetUnfolderBase]: For 49/69 co-relation queries the response was YES.
[2024-02-02 09:11:27,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3085 conditions, 1650 events. 705/1650 cut-off events. For 49/69 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10726 event pairs, 306 based on Foata normal form. 100/1600 useless extension candidates. Maximal degree in co-relation 3078. Up to 999 conditions per place.
[2024-02-02 09:11:27,554 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 55 selfloop transitions, 2 changer transitions 0/89 dead transitions.
[2024-02-02 09:11:27,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 343 flow
[2024-02-02 09:11:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-02-02 09:11:27,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-02-02 09:11:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 208 transitions.
[2024-02-02 09:11:27,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7123287671232876
[2024-02-02 09:11:27,556 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 158 flow. Second operand 4 states and 208 transitions.
[2024-02-02 09:11:27,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 343 flow
[2024-02-02 09:11:27,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-02-02 09:11:27,558 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 154 flow
[2024-02-02 09:11:27,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=69, PETRI_TRANSITIONS=62}
[2024-02-02 09:11:27,559 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -2 predicate places.
[2024-02-02 09:11:27,559 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 154 flow
[2024-02-02 09:11:27,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:27,559 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:27,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-02 09:11:27,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-02-02 09:11:27,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:27,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:27,560 INFO L85 PathProgramCache]: Analyzing trace with hash -956596628, now seen corresponding path program 1 times
[2024-02-02 09:11:27,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:27,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135616948]
[2024-02-02 09:11:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:27,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:27,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:27,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135616948]
[2024-02-02 09:11:27,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135616948] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-02 09:11:27,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-02 09:11:27,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-02-02 09:11:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46980123]
[2024-02-02 09:11:27,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-02 09:11:27,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-02-02 09:11:27,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:27,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-02-02 09:11:27,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-02-02 09:11:27,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 73
[2024-02-02 09:11:27,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:27,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:27,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 73
[2024-02-02 09:11:27,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:11:28,010 INFO L124 PetriNetUnfolderBase]: 1821/3712 cut-off events.
[2024-02-02 09:11:28,011 INFO L125 PetriNetUnfolderBase]: For 186/270 co-relation queries the response was YES.
[2024-02-02 09:11:28,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7200 conditions, 3712 events. 1821/3712 cut-off events. For 186/270 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 24125 event pairs, 1208 based on Foata normal form. 96/3346 useless extension candidates. Maximal degree in co-relation 7193. Up to 1908 conditions per place.
[2024-02-02 09:11:28,028 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 78 selfloop transitions, 3 changer transitions 0/102 dead transitions.
[2024-02-02 09:11:28,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 102 transitions, 412 flow
[2024-02-02 09:11:28,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-02-02 09:11:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-02-02 09:11:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions.
[2024-02-02 09:11:28,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6575342465753424
[2024-02-02 09:11:28,029 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 154 flow. Second operand 4 states and 192 transitions.
[2024-02-02 09:11:28,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 102 transitions, 412 flow
[2024-02-02 09:11:28,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 102 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-02-02 09:11:28,032 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 175 flow
[2024-02-02 09:11:28,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=71, PETRI_TRANSITIONS=63}
[2024-02-02 09:11:28,032 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 0 predicate places.
[2024-02-02 09:11:28,033 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 175 flow
[2024-02-02 09:11:28,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:28,033 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:28,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-02 09:11:28,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-02-02 09:11:28,033 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:28,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:28,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1186726412, now seen corresponding path program 1 times
[2024-02-02 09:11:28,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:28,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567228675]
[2024-02-02 09:11:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:28,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:28,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:28,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567228675]
[2024-02-02 09:11:28,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567228675] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-02 09:11:28,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-02 09:11:28,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-02-02 09:11:28,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891941432]
[2024-02-02 09:11:28,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-02 09:11:28,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-02-02 09:11:28,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:28,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-02-02 09:11:28,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-02-02 09:11:28,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 73
[2024-02-02 09:11:28,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:28,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:28,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 73
[2024-02-02 09:11:28,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:11:28,308 INFO L124 PetriNetUnfolderBase]: 925/2266 cut-off events.
[2024-02-02 09:11:28,309 INFO L125 PetriNetUnfolderBase]: For 170/242 co-relation queries the response was YES.
[2024-02-02 09:11:28,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4452 conditions, 2266 events. 925/2266 cut-off events. For 170/242 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 15741 event pairs, 116 based on Foata normal form. 62/2216 useless extension candidates. Maximal degree in co-relation 4444. Up to 1225 conditions per place.
[2024-02-02 09:11:28,320 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 58 selfloop transitions, 3 changer transitions 0/92 dead transitions.
[2024-02-02 09:11:28,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 92 transitions, 379 flow
[2024-02-02 09:11:28,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-02-02 09:11:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-02-02 09:11:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions.
[2024-02-02 09:11:28,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7363013698630136
[2024-02-02 09:11:28,321 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 175 flow. Second operand 4 states and 215 transitions.
[2024-02-02 09:11:28,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 92 transitions, 379 flow
[2024-02-02 09:11:28,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 369 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-02-02 09:11:28,324 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 193 flow
[2024-02-02 09:11:28,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=74, PETRI_TRANSITIONS=65}
[2024-02-02 09:11:28,324 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places.
[2024-02-02 09:11:28,325 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 193 flow
[2024-02-02 09:11:28,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:28,325 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:28,325 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-02 09:11:28,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-02-02 09:11:28,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:28,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:28,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1086133993, now seen corresponding path program 1 times
[2024-02-02 09:11:28,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:28,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378302877]
[2024-02-02 09:11:28,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:28,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:28,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378302877]
[2024-02-02 09:11:28,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378302877] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-02 09:11:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871721407]
[2024-02-02 09:11:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:28,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-02 09:11:28,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-02 09:11:28,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-02 09:11:28,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-02-02 09:11:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:28,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core
[2024-02-02 09:11:28,586 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-02 09:11:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:28,707 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-02 09:11:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:29,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871721407] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-02 09:11:29,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-02 09:11:29,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9
[2024-02-02 09:11:29,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565526066]
[2024-02-02 09:11:29,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-02 09:11:29,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-02-02 09:11:29,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-02-02 09:11:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2024-02-02 09:11:29,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73
[2024-02-02 09:11:29,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 193 flow. Second operand has 10 states, 10 states have (on average 29.4) internal successors, (294), 10 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:29,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:29,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73
[2024-02-02 09:11:29,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:11:30,138 INFO L124 PetriNetUnfolderBase]: 2721/5170 cut-off events.
[2024-02-02 09:11:30,138 INFO L125 PetriNetUnfolderBase]: For 1187/1351 co-relation queries the response was YES.
[2024-02-02 09:11:30,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11169 conditions, 5170 events. 2721/5170 cut-off events. For 1187/1351 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 31196 event pairs, 51 based on Foata normal form. 698/5646 useless extension candidates. Maximal degree in co-relation 11158. Up to 1027 conditions per place.
[2024-02-02 09:11:30,162 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 171 selfloop transitions, 7 changer transitions 0/198 dead transitions.
[2024-02-02 09:11:30,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 198 transitions, 935 flow
[2024-02-02 09:11:30,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-02 09:11:30,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-02 09:11:30,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 383 transitions.
[2024-02-02 09:11:30,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6558219178082192
[2024-02-02 09:11:30,164 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 193 flow. Second operand 8 states and 383 transitions.
[2024-02-02 09:11:30,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 198 transitions, 935 flow
[2024-02-02 09:11:30,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 198 transitions, 927 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-02-02 09:11:30,168 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 212 flow
[2024-02-02 09:11:30,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=212, PETRI_PLACES=79, PETRI_TRANSITIONS=63}
[2024-02-02 09:11:30,168 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 8 predicate places.
[2024-02-02 09:11:30,168 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 212 flow
[2024-02-02 09:11:30,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.4) internal successors, (294), 10 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:30,169 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:30,169 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-02 09:11:30,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-02-02 09:11:30,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-02 09:11:30,381 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:30,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:30,381 INFO L85 PathProgramCache]: Analyzing trace with hash -258450797, now seen corresponding path program 1 times
[2024-02-02 09:11:30,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:30,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543394808]
[2024-02-02 09:11:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:30,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:30,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:30,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543394808]
[2024-02-02 09:11:30,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543394808] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-02 09:11:30,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40585194]
[2024-02-02 09:11:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:30,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-02 09:11:30,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-02 09:11:30,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-02 09:11:30,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-02-02 09:11:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:30,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core
[2024-02-02 09:11:30,643 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-02 09:11:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:30,716 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-02 09:11:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:31,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40585194] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-02 09:11:31,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-02 09:11:31,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9
[2024-02-02 09:11:31,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484947724]
[2024-02-02 09:11:31,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-02 09:11:31,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-02-02 09:11:31,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:31,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-02-02 09:11:31,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2024-02-02 09:11:31,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73
[2024-02-02 09:11:31,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:31,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:31,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73
[2024-02-02 09:11:31,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:11:32,264 INFO L124 PetriNetUnfolderBase]: 4891/8705 cut-off events.
[2024-02-02 09:11:32,265 INFO L125 PetriNetUnfolderBase]: For 5223/5334 co-relation queries the response was YES.
[2024-02-02 09:11:32,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19856 conditions, 8705 events. 4891/8705 cut-off events. For 5223/5334 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 56459 event pairs, 135 based on Foata normal form. 1329/9315 useless extension candidates. Maximal degree in co-relation 19841. Up to 2016 conditions per place.
[2024-02-02 09:11:32,299 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 154 selfloop transitions, 7 changer transitions 0/177 dead transitions.
[2024-02-02 09:11:32,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 177 transitions, 982 flow
[2024-02-02 09:11:32,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-02 09:11:32,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-02 09:11:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 369 transitions.
[2024-02-02 09:11:32,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6318493150684932
[2024-02-02 09:11:32,301 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 212 flow. Second operand 8 states and 369 transitions.
[2024-02-02 09:11:32,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 177 transitions, 982 flow
[2024-02-02 09:11:32,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 177 transitions, 917 flow, removed 21 selfloop flow, removed 3 redundant places.
[2024-02-02 09:11:32,307 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 218 flow
[2024-02-02 09:11:32,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=218, PETRI_PLACES=81, PETRI_TRANSITIONS=60}
[2024-02-02 09:11:32,308 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 10 predicate places.
[2024-02-02 09:11:32,308 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 218 flow
[2024-02-02 09:11:32,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:32,309 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:32,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-02 09:11:32,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-02-02 09:11:32,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2024-02-02 09:11:32,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:32,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:32,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1679666367, now seen corresponding path program 1 times
[2024-02-02 09:11:32,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:32,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745626324]
[2024-02-02 09:11:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:32,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:32,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:32,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745626324]
[2024-02-02 09:11:32,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745626324] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-02 09:11:32,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-02 09:11:32,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-02-02 09:11:32,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304502247]
[2024-02-02 09:11:32,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-02 09:11:32,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-02-02 09:11:32,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-02-02 09:11:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-02-02 09:11:32,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 73
[2024-02-02 09:11:32,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:32,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:32,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 73
[2024-02-02 09:11:32,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:11:33,107 INFO L124 PetriNetUnfolderBase]: 1613/4263 cut-off events.
[2024-02-02 09:11:33,107 INFO L125 PetriNetUnfolderBase]: For 4050/4148 co-relation queries the response was YES.
[2024-02-02 09:11:33,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9602 conditions, 4263 events. 1613/4263 cut-off events. For 4050/4148 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 26961 event pairs, 429 based on Foata normal form. 398/4475 useless extension candidates. Maximal degree in co-relation 9583. Up to 2028 conditions per place.
[2024-02-02 09:11:33,132 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 52 selfloop transitions, 4 changer transitions 0/79 dead transitions.
[2024-02-02 09:11:33,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 430 flow
[2024-02-02 09:11:33,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-02-02 09:11:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-02-02 09:11:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions.
[2024-02-02 09:11:33,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7488584474885844
[2024-02-02 09:11:33,134 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 218 flow. Second operand 3 states and 164 transitions.
[2024-02-02 09:11:33,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 430 flow
[2024-02-02 09:11:33,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 410 flow, removed 6 selfloop flow, removed 3 redundant places.
[2024-02-02 09:11:33,140 INFO L231 Difference]: Finished difference. Result has 80 places, 60 transitions, 215 flow
[2024-02-02 09:11:33,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=80, PETRI_TRANSITIONS=60}
[2024-02-02 09:11:33,141 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places.
[2024-02-02 09:11:33,141 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 60 transitions, 215 flow
[2024-02-02 09:11:33,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:33,141 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:33,141 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-02 09:11:33,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-02-02 09:11:33,142 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:33,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:33,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2141592471, now seen corresponding path program 1 times
[2024-02-02 09:11:33,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:33,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712512397]
[2024-02-02 09:11:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:33,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:33,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:33,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712512397]
[2024-02-02 09:11:33,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712512397] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-02 09:11:33,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745059601]
[2024-02-02 09:11:33,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:33,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-02 09:11:33,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-02 09:11:33,321 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-02 09:11:33,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-02-02 09:11:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:33,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjunts are in the unsatisfiable core
[2024-02-02 09:11:33,469 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-02 09:11:33,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-02-02 09:11:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:33,579 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-02 09:11:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:33,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745059601] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-02 09:11:33,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-02 09:11:33,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10
[2024-02-02 09:11:33,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686319147]
[2024-02-02 09:11:33,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-02 09:11:33,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-02-02 09:11:33,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:33,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-02-02 09:11:33,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2024-02-02 09:11:33,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73
[2024-02-02 09:11:33,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 60 transitions, 215 flow. Second operand has 11 states, 11 states have (on average 42.63636363636363) internal successors, (469), 11 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:33,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:33,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73
[2024-02-02 09:11:33,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:11:35,336 INFO L124 PetriNetUnfolderBase]: 4997/12840 cut-off events.
[2024-02-02 09:11:35,337 INFO L125 PetriNetUnfolderBase]: For 12180/12288 co-relation queries the response was YES.
[2024-02-02 09:11:35,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30654 conditions, 12840 events. 4997/12840 cut-off events. For 12180/12288 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 108923 event pairs, 995 based on Foata normal form. 222/12757 useless extension candidates. Maximal degree in co-relation 30635. Up to 1911 conditions per place.
[2024-02-02 09:11:35,397 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 203 selfloop transitions, 19 changer transitions 0/243 dead transitions.
[2024-02-02 09:11:35,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 243 transitions, 1458 flow
[2024-02-02 09:11:35,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-02-02 09:11:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2024-02-02 09:11:35,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 636 transitions.
[2024-02-02 09:11:35,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.726027397260274
[2024-02-02 09:11:35,399 INFO L175 Difference]: Start difference. First operand has 80 places, 60 transitions, 215 flow. Second operand 12 states and 636 transitions.
[2024-02-02 09:11:35,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 243 transitions, 1458 flow
[2024-02-02 09:11:35,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 243 transitions, 1436 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-02-02 09:11:35,425 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 345 flow
[2024-02-02 09:11:35,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=345, PETRI_PLACES=96, PETRI_TRANSITIONS=78}
[2024-02-02 09:11:35,427 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 25 predicate places.
[2024-02-02 09:11:35,427 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 345 flow
[2024-02-02 09:11:35,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 42.63636363636363) internal successors, (469), 11 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:35,427 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:35,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-02 09:11:35,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-02-02 09:11:35,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-02 09:11:35,639 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:35,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:35,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1793372820, now seen corresponding path program 1 times
[2024-02-02 09:11:35,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:35,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305931976]
[2024-02-02 09:11:35,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:35,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:36,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:36,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305931976]
[2024-02-02 09:11:36,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305931976] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-02 09:11:36,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-02 09:11:36,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-02-02 09:11:36,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988010015]
[2024-02-02 09:11:36,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-02 09:11:36,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-02-02 09:11:36,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:36,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-02-02 09:11:36,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-02-02 09:11:36,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73
[2024-02-02 09:11:36,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 40.57142857142857) internal successors, (284), 7 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:36,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:36,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73
[2024-02-02 09:11:36,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:11:37,661 INFO L124 PetriNetUnfolderBase]: 4837/12258 cut-off events.
[2024-02-02 09:11:37,662 INFO L125 PetriNetUnfolderBase]: For 15224/15332 co-relation queries the response was YES.
[2024-02-02 09:11:37,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30932 conditions, 12258 events. 4837/12258 cut-off events. For 15224/15332 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 102534 event pairs, 1655 based on Foata normal form. 124/12093 useless extension candidates. Maximal degree in co-relation 30905. Up to 7309 conditions per place.
[2024-02-02 09:11:37,732 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 111 selfloop transitions, 7 changer transitions 0/139 dead transitions.
[2024-02-02 09:11:37,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 139 transitions, 847 flow
[2024-02-02 09:11:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-02-02 09:11:37,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-02-02 09:11:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 352 transitions.
[2024-02-02 09:11:37,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6888454011741683
[2024-02-02 09:11:37,734 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 345 flow. Second operand 7 states and 352 transitions.
[2024-02-02 09:11:37,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 139 transitions, 847 flow
[2024-02-02 09:11:37,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 139 transitions, 833 flow, removed 6 selfloop flow, removed 1 redundant places.
[2024-02-02 09:11:37,758 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 392 flow
[2024-02-02 09:11:37,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=392, PETRI_PLACES=105, PETRI_TRANSITIONS=83}
[2024-02-02 09:11:37,759 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 34 predicate places.
[2024-02-02 09:11:37,759 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 392 flow
[2024-02-02 09:11:37,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.57142857142857) internal successors, (284), 7 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:37,760 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:37,760 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-02 09:11:37,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-02-02 09:11:37,760 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:37,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:37,761 INFO L85 PathProgramCache]: Analyzing trace with hash -601830447, now seen corresponding path program 1 times
[2024-02-02 09:11:37,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:37,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827857607]
[2024-02-02 09:11:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:37,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:38,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:38,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827857607]
[2024-02-02 09:11:38,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827857607] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-02 09:11:38,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242956606]
[2024-02-02 09:11:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:38,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-02 09:11:38,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-02 09:11:38,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-02 09:11:38,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-02-02 09:11:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:38,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 11 conjunts are in the unsatisfiable core
[2024-02-02 09:11:38,363 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-02 09:11:38,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-02-02 09:11:38,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1
[2024-02-02 09:11:38,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32
[2024-02-02 09:11:38,675 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:38,675 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-02 09:11:39,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1
[2024-02-02 09:11:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:39,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242956606] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-02 09:11:39,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-02 09:11:39,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19
[2024-02-02 09:11:39,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703439716]
[2024-02-02 09:11:39,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-02 09:11:39,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-02-02 09:11:39,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:39,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-02-02 09:11:39,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380
[2024-02-02 09:11:39,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73
[2024-02-02 09:11:39,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 392 flow. Second operand has 20 states, 20 states have (on average 41.75) internal successors, (835), 20 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:39,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:39,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73
[2024-02-02 09:11:39,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:11:44,909 INFO L124 PetriNetUnfolderBase]: 12749/31274 cut-off events.
[2024-02-02 09:11:44,910 INFO L125 PetriNetUnfolderBase]: For 44680/44828 co-relation queries the response was YES.
[2024-02-02 09:11:45,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82415 conditions, 31274 events. 12749/31274 cut-off events. For 44680/44828 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 300670 event pairs, 1671 based on Foata normal form. 316/31248 useless extension candidates. Maximal degree in co-relation 82383. Up to 4490 conditions per place.
[2024-02-02 09:11:45,227 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 632 selfloop transitions, 110 changer transitions 0/763 dead transitions.
[2024-02-02 09:11:45,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 763 transitions, 5215 flow
[2024-02-02 09:11:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2024-02-02 09:11:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2024-02-02 09:11:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2461 transitions.
[2024-02-02 09:11:45,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6742465753424658
[2024-02-02 09:11:45,233 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 392 flow. Second operand 50 states and 2461 transitions.
[2024-02-02 09:11:45,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 763 transitions, 5215 flow
[2024-02-02 09:11:45,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 763 transitions, 5212 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-02-02 09:11:45,346 INFO L231 Difference]: Finished difference. Result has 157 places, 189 transitions, 1202 flow
[2024-02-02 09:11:45,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=1202, PETRI_PLACES=157, PETRI_TRANSITIONS=189}
[2024-02-02 09:11:45,348 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 86 predicate places.
[2024-02-02 09:11:45,348 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 189 transitions, 1202 flow
[2024-02-02 09:11:45,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 41.75) internal successors, (835), 20 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:45,349 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:45,349 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-02 09:11:45,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-02-02 09:11:45,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-02 09:11:45,562 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err8ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:45,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash 479940281, now seen corresponding path program 1 times
[2024-02-02 09:11:45,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:45,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388612307]
[2024-02-02 09:11:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:45,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:45,661 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2024-02-02 09:11:45,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:45,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388612307]
[2024-02-02 09:11:45,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388612307] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-02 09:11:45,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-02 09:11:45,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-02-02 09:11:45,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297849957]
[2024-02-02 09:11:45,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-02 09:11:45,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-02-02 09:11:45,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:45,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-02-02 09:11:45,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2024-02-02 09:11:45,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73
[2024-02-02 09:11:45,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 189 transitions, 1202 flow. Second operand has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:45,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:45,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73
[2024-02-02 09:11:45,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:11:52,287 INFO L124 PetriNetUnfolderBase]: 23948/48915 cut-off events.
[2024-02-02 09:11:52,287 INFO L125 PetriNetUnfolderBase]: For 67037/67231 co-relation queries the response was YES.
[2024-02-02 09:11:52,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137634 conditions, 48915 events. 23948/48915 cut-off events. For 67037/67231 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 444095 event pairs, 6265 based on Foata normal form. 74/48632 useless extension candidates. Maximal degree in co-relation 137597. Up to 23046 conditions per place.
[2024-02-02 09:11:52,776 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 399 selfloop transitions, 9 changer transitions 3/457 dead transitions.
[2024-02-02 09:11:52,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 457 transitions, 3736 flow
[2024-02-02 09:11:52,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-02-02 09:11:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-02-02 09:11:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 274 transitions.
[2024-02-02 09:11:52,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6255707762557078
[2024-02-02 09:11:52,778 INFO L175 Difference]: Start difference. First operand has 157 places, 189 transitions, 1202 flow. Second operand 6 states and 274 transitions.
[2024-02-02 09:11:52,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 457 transitions, 3736 flow
[2024-02-02 09:11:53,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 457 transitions, 3240 flow, removed 234 selfloop flow, removed 4 redundant places.
[2024-02-02 09:11:53,269 INFO L231 Difference]: Finished difference. Result has 157 places, 189 transitions, 1014 flow
[2024-02-02 09:11:53,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1014, PETRI_PLACES=157, PETRI_TRANSITIONS=189}
[2024-02-02 09:11:53,269 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 86 predicate places.
[2024-02-02 09:11:53,270 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 189 transitions, 1014 flow
[2024-02-02 09:11:53,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:53,270 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:11:53,271 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-02 09:11:53,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2024-02-02 09:11:53,271 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:11:53,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:11:53,271 INFO L85 PathProgramCache]: Analyzing trace with hash 706040796, now seen corresponding path program 1 times
[2024-02-02 09:11:53,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:11:53,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966130451]
[2024-02-02 09:11:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:53,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:11:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-02-02 09:11:53,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:11:53,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966130451]
[2024-02-02 09:11:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966130451] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-02 09:11:53,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749026600]
[2024-02-02 09:11:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:11:53,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-02 09:11:53,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-02 09:11:53,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-02 09:11:53,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-02-02 09:11:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:11:53,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core
[2024-02-02 09:11:53,697 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-02 09:11:53,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-02-02 09:11:53,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-02-02 09:11:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:11:54,007 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-02 09:11:54,047 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-02-02 09:11:54,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749026600] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-02 09:11:54,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-02 09:11:54,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 11
[2024-02-02 09:11:54,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020126608]
[2024-02-02 09:11:54,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-02 09:11:54,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-02-02 09:11:54,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:11:54,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-02-02 09:11:54,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2024-02-02 09:11:54,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73
[2024-02-02 09:11:54,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 189 transitions, 1014 flow. Second operand has 11 states, 11 states have (on average 43.63636363636363) internal successors, (480), 11 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:11:54,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:11:54,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73
[2024-02-02 09:11:54,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:12:02,125 INFO L124 PetriNetUnfolderBase]: 21557/52417 cut-off events.
[2024-02-02 09:12:02,125 INFO L125 PetriNetUnfolderBase]: For 102207/102247 co-relation queries the response was YES.
[2024-02-02 09:12:02,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148280 conditions, 52417 events. 21557/52417 cut-off events. For 102207/102247 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 523257 event pairs, 3443 based on Foata normal form. 726/52822 useless extension candidates. Maximal degree in co-relation 148245. Up to 7568 conditions per place.
[2024-02-02 09:12:02,717 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 559 selfloop transitions, 173 changer transitions 7/760 dead transitions.
[2024-02-02 09:12:02,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 760 transitions, 5532 flow
[2024-02-02 09:12:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2024-02-02 09:12:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2024-02-02 09:12:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1408 transitions.
[2024-02-02 09:12:02,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7143581938102486
[2024-02-02 09:12:02,721 INFO L175 Difference]: Start difference. First operand has 157 places, 189 transitions, 1014 flow. Second operand 27 states and 1408 transitions.
[2024-02-02 09:12:02,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 760 transitions, 5532 flow
[2024-02-02 09:12:03,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 760 transitions, 5304 flow, removed 26 selfloop flow, removed 5 redundant places.
[2024-02-02 09:12:03,083 INFO L231 Difference]: Finished difference. Result has 196 places, 302 transitions, 2295 flow
[2024-02-02 09:12:03,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2295, PETRI_PLACES=196, PETRI_TRANSITIONS=302}
[2024-02-02 09:12:03,084 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 125 predicate places.
[2024-02-02 09:12:03,084 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 302 transitions, 2295 flow
[2024-02-02 09:12:03,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 43.63636363636363) internal successors, (480), 11 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:12:03,085 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-02 09:12:03,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-02 09:12:03,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-02-02 09:12:03,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2024-02-02 09:12:03,296 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] ===
[2024-02-02 09:12:03,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-02 09:12:03,297 INFO L85 PathProgramCache]: Analyzing trace with hash 83260793, now seen corresponding path program 1 times
[2024-02-02 09:12:03,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-02 09:12:03,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090691634]
[2024-02-02 09:12:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:12:03,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-02 09:12:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:12:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:12:04,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-02 09:12:04,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090691634]
[2024-02-02 09:12:04,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090691634] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-02 09:12:04,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100117501]
[2024-02-02 09:12:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-02 09:12:04,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-02 09:12:04,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-02 09:12:04,241 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-02 09:12:04,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-02-02 09:12:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-02 09:12:04,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 14 conjunts are in the unsatisfiable core
[2024-02-02 09:12:04,376 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-02 09:12:04,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-02-02 09:12:04,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66
[2024-02-02 09:12:04,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 94
[2024-02-02 09:12:04,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 29
[2024-02-02 09:12:05,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-02-02 09:12:05,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 57
[2024-02-02 09:12:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:12:05,238 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-02 09:12:05,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 45
[2024-02-02 09:12:05,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-02-02 09:12:05,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14
[2024-02-02 09:12:05,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-02-02 09:12:05,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16
[2024-02-02 09:12:05,853 INFO L349 Elim1Store]: treesize reduction 8, result has 70.4 percent of original size
[2024-02-02 09:12:05,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 94
[2024-02-02 09:12:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-02 09:12:05,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100117501] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-02 09:12:05,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-02 09:12:05,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 24
[2024-02-02 09:12:05,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697603766]
[2024-02-02 09:12:05,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-02 09:12:05,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2024-02-02 09:12:05,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-02 09:12:05,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2024-02-02 09:12:05,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600
[2024-02-02 09:12:06,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73
[2024-02-02 09:12:06,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 302 transitions, 2295 flow. Second operand has 25 states, 25 states have (on average 41.72) internal successors, (1043), 25 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-02 09:12:06,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-02 09:12:06,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73
[2024-02-02 09:12:06,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-02 09:12:20,147 INFO L124 PetriNetUnfolderBase]: 29531/71556 cut-off events.
[2024-02-02 09:12:20,147 INFO L125 PetriNetUnfolderBase]: For 157478/157518 co-relation queries the response was YES.
[2024-02-02 09:12:21,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213080 conditions, 71556 events. 29531/71556 cut-off events. For 157478/157518 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 731653 event pairs, 4371 based on Foata normal form. 462/71543 useless extension candidates. Maximal degree in co-relation 213029. Up to 10306 conditions per place.
[2024-02-02 09:12:21,260 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 742 selfloop transitions, 318 changer transitions 46/1127 dead transitions.
[2024-02-02 09:12:21,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 1127 transitions, 9209 flow
[2024-02-02 09:12:21,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2024-02-02 09:12:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2024-02-02 09:12:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2644 transitions.
[2024-02-02 09:12:21,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833807185319204
[2024-02-02 09:12:21,265 INFO L175 Difference]: Start difference. First operand has 196 places, 302 transitions, 2295 flow. Second operand 53 states and 2644 transitions.
[2024-02-02 09:12:21,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 1127 transitions, 9209 flow