./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/test-easy11.wvr.yml/witness.yml --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version e7c74aec
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/test-easy11.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false
--- Real Ultimate output ---
This is Ultimate 0.2.4-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m
[2024-02-07 19:20:58,836 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-02-07 19:20:58,912 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-02-07 19:20:58,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-02-07 19:20:58,918 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-02-07 19:20:58,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-02-07 19:20:58,942 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-02-07 19:20:58,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-02-07 19:20:58,943 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-02-07 19:20:58,946 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-02-07 19:20:58,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-02-07 19:20:58,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-02-07 19:20:58,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-02-07 19:20:58,949 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-02-07 19:20:58,949 INFO L153 SettingsManager]: * Use SBE=true
[2024-02-07 19:20:58,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-02-07 19:20:58,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-02-07 19:20:58,950 INFO L153 SettingsManager]: * sizeof long=4
[2024-02-07 19:20:58,950 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-02-07 19:20:58,951 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-02-07 19:20:58,951 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-02-07 19:20:58,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-02-07 19:20:58,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-02-07 19:20:58,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-02-07 19:20:58,952 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-02-07 19:20:58,952 INFO L153 SettingsManager]: * sizeof long double=12
[2024-02-07 19:20:58,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-02-07 19:20:58,953 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-02-07 19:20:58,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-02-07 19:20:58,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-02-07 19:20:58,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-02-07 19:20:58,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-02-07 19:20:58,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-02-07 19:20:58,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-02-07 19:20:58,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-02-07 19:20:58,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-02-07 19:20:58,956 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-02-07 19:20:58,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-02-07 19:20:58,956 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-02-07 19:20:58,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-02-07 19:20:58,957 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2024-02-07 19:20:58,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-02-07 19:20:58,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-02-07 19:20:58,958 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false
[2024-02-07 19:20:59,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-02-07 19:20:59,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-02-07 19:20:59,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-02-07 19:20:59,190 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-02-07 19:20:59,190 INFO L274 PluginConnector]: CDTParser initialized
[2024-02-07 19:20:59,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c
[2024-02-07 19:21:00,379 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-02-07 19:21:00,576 INFO L384 CDTParser]: Found 1 translation units.
[2024-02-07 19:21:00,576 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c
[2024-02-07 19:21:00,583 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccde41693/cc87a58fc3474e7185c4b16d9f52f43f/FLAG5780670c4
[2024-02-07 19:21:00,598 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccde41693/cc87a58fc3474e7185c4b16d9f52f43f
[2024-02-07 19:21:00,600 INFO L270 PluginConnector]: Initializing Witness Parser...
[2024-02-07 19:21:00,601 INFO L274 PluginConnector]: Witness Parser initialized
[2024-02-07 19:21:00,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/test-easy11.wvr.yml/witness.yml
[2024-02-07 19:21:00,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-02-07 19:21:00,689 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements.
[2024-02-07 19:21:00,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-02-07 19:21:00,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-02-07 19:21:00,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-02-07 19:21:00,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:21:00" (1/2) ...
[2024-02-07 19:21:00,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc8119c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:21:00, skipping insertion in model container
[2024-02-07 19:21:00,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:21:00" (1/2) ...
[2024-02-07 19:21:00,698 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2f3e3c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:21:00, skipping insertion in model container
[2024-02-07 19:21:00,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:21:00" (2/2) ...
[2024-02-07 19:21:00,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc8119c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00, skipping insertion in model container
[2024-02-07 19:21:00,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:21:00" (2/2) ...
[2024-02-07 19:21:00,700 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness
[2024-02-07 19:21:00,724 INFO L74 edCorrectnessWitness]: Found the following entries in the witness:
[2024-02-07 19:21:00,725 INFO L76 edCorrectnessWitness]: Location invariant before [L61-L61] 10000 <= Y
[2024-02-07 19:21:00,726 INFO L76 edCorrectnessWitness]: Location invariant before [L47-L47] ((0 <= Y) && (10000 <= x)) && (x != 0)
[2024-02-07 19:21:00,726 INFO L76 edCorrectnessWitness]: Location invariant before [L60-L60] ((0 <= Y) && (10000 <= x)) && (x != 0)
[2024-02-07 19:21:00,726 INFO L76 edCorrectnessWitness]: Location invariant before [L78-L78] 0 <= Y
[2024-02-07 19:21:00,726 INFO L76 edCorrectnessWitness]: Location invariant before [L48-L48] 10000 <= Y
[2024-02-07 19:21:00,727 INFO L76 edCorrectnessWitness]: Location invariant before [L57-L57] x <= 9999
[2024-02-07 19:21:00,727 INFO L76 edCorrectnessWitness]: Location invariant before [L44-L44] x <= 9999
[2024-02-07 19:21:00,727 INFO L76 edCorrectnessWitness]: Location invariant before [L69-L69] ((((0LL - (long long )X) + (long long )Y >= 0LL) && ((long long )X + (long long )Y >= 0LL)) && ((0LL - (long long )X) - (long long )Y >= 0LL)) && ((long long )X - (long long )Y >= 0LL)
[2024-02-07 19:21:00,746 INFO L181 MainTranslator]: Built tables and reachable declarations
[2024-02-07 19:21:00,921 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2031,2044]
[2024-02-07 19:21:00,924 INFO L207 PostProcessor]: Analyzing one entry point: main
[2024-02-07 19:21:00,933 INFO L206 MainTranslator]: Completed pre-run
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
Start Parsing Local
[2024-02-07 19:21:00,974 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2031,2044]
[2024-02-07 19:21:00,974 INFO L207 PostProcessor]: Analyzing one entry point: main
[2024-02-07 19:21:00,989 INFO L211 MainTranslator]: Completed translation
[2024-02-07 19:21:00,989 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00 WrapperNode
[2024-02-07 19:21:00,990 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-02-07 19:21:00,991 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-02-07 19:21:00,991 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-02-07 19:21:00,991 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-02-07 19:21:00,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00" (1/1) ...
[2024-02-07 19:21:01,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00" (1/1) ...
[2024-02-07 19:21:01,019 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55
[2024-02-07 19:21:01,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-02-07 19:21:01,022 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-02-07 19:21:01,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-02-07 19:21:01,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-02-07 19:21:01,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00" (1/1) ...
[2024-02-07 19:21:01,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00" (1/1) ...
[2024-02-07 19:21:01,062 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00" (1/1) ...
[2024-02-07 19:21:01,095 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1].
[2024-02-07 19:21:01,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00" (1/1) ...
[2024-02-07 19:21:01,096 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00" (1/1) ...
[2024-02-07 19:21:01,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00" (1/1) ...
[2024-02-07 19:21:01,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00" (1/1) ...
[2024-02-07 19:21:01,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00" (1/1) ...
[2024-02-07 19:21:01,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00" (1/1) ...
[2024-02-07 19:21:01,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-02-07 19:21:01,132 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-02-07 19:21:01,133 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-02-07 19:21:01,133 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-02-07 19:21:01,134 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00" (1/1) ...
[2024-02-07 19:21:01,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-02-07 19:21:01,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:01,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-02-07 19:21:01,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-02-07 19:21:01,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-02-07 19:21:01,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2024-02-07 19:21:01,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2024-02-07 19:21:01,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2024-02-07 19:21:01,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2024-02-07 19:21:01,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-02-07 19:21:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-02-07 19:21:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-02-07 19:21:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-02-07 19:21:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-02-07 19:21:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-02-07 19:21:01,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2
[2024-02-07 19:21:01,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2024-02-07 19:21:01,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2024-02-07 19:21:01,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-02-07 19:21:01,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-02-07 19:21:01,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-02-07 19:21:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-02-07 19:21:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2
[2024-02-07 19:21:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-02-07 19:21:01,216 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2024-02-07 19:21:01,305 INFO L244 CfgBuilder]: Building ICFG
[2024-02-07 19:21:01,307 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-02-07 19:21:01,453 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program.
[2024-02-07 19:21:01,453 INFO L293 CfgBuilder]: Performing block encoding
[2024-02-07 19:21:01,584 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-02-07 19:21:01,595 INFO L320 CfgBuilder]: Removed 2 assume(true) statements.
[2024-02-07 19:21:01,595 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:21:01 BoogieIcfgContainer
[2024-02-07 19:21:01,596 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-02-07 19:21:01,598 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-02-07 19:21:01,598 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-02-07 19:21:01,601 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-02-07 19:21:01,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:21:00" (1/4) ...
[2024-02-07 19:21:01,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1ca279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:21:01, skipping insertion in model container
[2024-02-07 19:21:01,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:21:00" (2/4) ...
[2024-02-07 19:21:01,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1ca279 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:21:01, skipping insertion in model container
[2024-02-07 19:21:01,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:21:00" (3/4) ...
[2024-02-07 19:21:01,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1ca279 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:21:01, skipping insertion in model container
[2024-02-07 19:21:01,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:21:01" (4/4) ...
[2024-02-07 19:21:01,603 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c
[2024-02-07 19:21:01,629 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-02-07 19:21:01,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations.
[2024-02-07 19:21:01,630 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-02-07 19:21:01,687 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-02-07 19:21:01,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 84 flow
[2024-02-07 19:21:01,759 INFO L124 PetriNetUnfolderBase]: 2/33 cut-off events.
[2024-02-07 19:21:01,763 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-02-07 19:21:01,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 2/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 46 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place.
[2024-02-07 19:21:01,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 35 transitions, 84 flow
[2024-02-07 19:21:01,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 76 flow
[2024-02-07 19:21:01,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-02-07 19:21:01,799 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;@b3764b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-02-07 19:21:01,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations.
[2024-02-07 19:21:01,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-02-07 19:21:01,803 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events.
[2024-02-07 19:21:01,804 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-02-07 19:21:01,804 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:01,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2024-02-07 19:21:01,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:01,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:01,811 INFO L85 PathProgramCache]: Analyzing trace with hash 8334, now seen corresponding path program 1 times
[2024-02-07 19:21:01,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:01,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368934441]
[2024-02-07 19:21:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:02,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:02,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368934441]
[2024-02-07 19:21:02,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368934441] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:02,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:02,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-02-07 19:21:02,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21044337]
[2024-02-07 19:21:02,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:02,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-02-07 19:21:02,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:02,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-02-07 19:21:02,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-02-07 19:21:02,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35
[2024-02-07 19:21:02,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:02,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:02,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35
[2024-02-07 19:21:02,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:02,237 INFO L124 PetriNetUnfolderBase]: 133/246 cut-off events.
[2024-02-07 19:21:02,237 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES.
[2024-02-07 19:21:02,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 246 events. 133/246 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 750 event pairs, 105 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 430. Up to 234 conditions per place.
[2024-02-07 19:21:02,242 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 21 selfloop transitions, 2 changer transitions 0/29 dead transitions.
[2024-02-07 19:21:02,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 116 flow
[2024-02-07 19:21:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-02-07 19:21:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-02-07 19:21:02,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions.
[2024-02-07 19:21:02,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616
[2024-02-07 19:21:02,256 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 76 flow. Second operand 3 states and 50 transitions.
[2024-02-07 19:21:02,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 116 flow
[2024-02-07 19:21:02,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 108 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-02-07 19:21:02,262 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 66 flow
[2024-02-07 19:21:02,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=32, PETRI_TRANSITIONS=29}
[2024-02-07 19:21:02,267 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places.
[2024-02-07 19:21:02,267 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 66 flow
[2024-02-07 19:21:02,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:02,268 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:02,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:02,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-02-07 19:21:02,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:02,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash -884465604, now seen corresponding path program 1 times
[2024-02-07 19:21:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:02,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140664328]
[2024-02-07 19:21:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:02,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:02,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:02,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:02,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140664328]
[2024-02-07 19:21:02,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140664328] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:02,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:02,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-02-07 19:21:02,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836596474]
[2024-02-07 19:21:02,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:02,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-02-07 19:21:02,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:02,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-02-07 19:21:02,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-02-07 19:21:02,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35
[2024-02-07 19:21:02,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:02,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:02,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35
[2024-02-07 19:21:02,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:02,431 INFO L124 PetriNetUnfolderBase]: 153/276 cut-off events.
[2024-02-07 19:21:02,432 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2024-02-07 19:21:02,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 276 events. 153/276 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 918 event pairs, 105 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 547. Up to 234 conditions per place.
[2024-02-07 19:21:02,435 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 30 selfloop transitions, 2 changer transitions 0/37 dead transitions.
[2024-02-07 19:21:02,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 147 flow
[2024-02-07 19:21:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-02-07 19:21:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-02-07 19:21:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions.
[2024-02-07 19:21:02,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428
[2024-02-07 19:21:02,437 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 66 flow. Second operand 3 states and 57 transitions.
[2024-02-07 19:21:02,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 147 flow
[2024-02-07 19:21:02,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 143 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-02-07 19:21:02,438 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 64 flow
[2024-02-07 19:21:02,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=31, PETRI_TRANSITIONS=28}
[2024-02-07 19:21:02,439 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -6 predicate places.
[2024-02-07 19:21:02,439 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 64 flow
[2024-02-07 19:21:02,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:02,440 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:02,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:02,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-02-07 19:21:02,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:02,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash -884465571, now seen corresponding path program 1 times
[2024-02-07 19:21:02,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:02,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720541491]
[2024-02-07 19:21:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:02,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:02,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:02,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720541491]
[2024-02-07 19:21:02,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720541491] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:02,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:02,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-02-07 19:21:02,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955303486]
[2024-02-07 19:21:02,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:02,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-02-07 19:21:02,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:02,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-02-07 19:21:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-02-07 19:21:02,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35
[2024-02-07 19:21:02,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:02,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:02,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35
[2024-02-07 19:21:02,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:02,668 INFO L124 PetriNetUnfolderBase]: 137/250 cut-off events.
[2024-02-07 19:21:02,669 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES.
[2024-02-07 19:21:02,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 250 events. 137/250 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 796 event pairs, 37 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 400. Up to 144 conditions per place.
[2024-02-07 19:21:02,674 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 40 selfloop transitions, 5 changer transitions 0/49 dead transitions.
[2024-02-07 19:21:02,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 49 transitions, 202 flow
[2024-02-07 19:21:02,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-02-07 19:21:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-02-07 19:21:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions.
[2024-02-07 19:21:02,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286
[2024-02-07 19:21:02,676 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 64 flow. Second operand 4 states and 74 transitions.
[2024-02-07 19:21:02,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 49 transitions, 202 flow
[2024-02-07 19:21:02,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 49 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-02-07 19:21:02,678 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 92 flow
[2024-02-07 19:21:02,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=34, PETRI_TRANSITIONS=32}
[2024-02-07 19:21:02,679 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places.
[2024-02-07 19:21:02,679 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 92 flow
[2024-02-07 19:21:02,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:02,680 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:02,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:02,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-02-07 19:21:02,680 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:02,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:02,681 INFO L85 PathProgramCache]: Analyzing trace with hash 430782032, now seen corresponding path program 1 times
[2024-02-07 19:21:02,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:02,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787087049]
[2024-02-07 19:21:02,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:02,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:02,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:02,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787087049]
[2024-02-07 19:21:02,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787087049] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:02,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:02,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-02-07 19:21:02,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081783748]
[2024-02-07 19:21:02,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:02,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-02-07 19:21:02,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:02,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-02-07 19:21:02,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-02-07 19:21:02,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35
[2024-02-07 19:21:02,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:02,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:02,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35
[2024-02-07 19:21:02,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:02,790 INFO L124 PetriNetUnfolderBase]: 134/241 cut-off events.
[2024-02-07 19:21:02,790 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES.
[2024-02-07 19:21:02,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 241 events. 134/241 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 710 event pairs, 83 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 299. Up to 208 conditions per place.
[2024-02-07 19:21:02,792 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 33 selfloop transitions, 2 changer transitions 0/39 dead transitions.
[2024-02-07 19:21:02,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 184 flow
[2024-02-07 19:21:02,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-02-07 19:21:02,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-02-07 19:21:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions.
[2024-02-07 19:21:02,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333
[2024-02-07 19:21:02,793 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 92 flow. Second operand 3 states and 56 transitions.
[2024-02-07 19:21:02,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 184 flow
[2024-02-07 19:21:02,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places.
[2024-02-07 19:21:02,795 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 94 flow
[2024-02-07 19:21:02,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=31}
[2024-02-07 19:21:02,796 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places.
[2024-02-07 19:21:02,796 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 94 flow
[2024-02-07 19:21:02,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:02,797 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:02,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:02,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-02-07 19:21:02,797 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:02,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:02,797 INFO L85 PathProgramCache]: Analyzing trace with hash 430782065, now seen corresponding path program 1 times
[2024-02-07 19:21:02,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:02,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527029800]
[2024-02-07 19:21:02,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:02,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:02,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:02,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527029800]
[2024-02-07 19:21:02,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527029800] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:02,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:02,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-02-07 19:21:02,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747740434]
[2024-02-07 19:21:02,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:02,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-02-07 19:21:02,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:02,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-02-07 19:21:02,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-02-07 19:21:02,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35
[2024-02-07 19:21:02,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:02,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:02,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35
[2024-02-07 19:21:02,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:02,928 INFO L124 PetriNetUnfolderBase]: 123/224 cut-off events.
[2024-02-07 19:21:02,928 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES.
[2024-02-07 19:21:02,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 224 events. 123/224 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 647 event pairs, 38 based on Foata normal form. 6/224 useless extension candidates. Maximal degree in co-relation 431. Up to 146 conditions per place.
[2024-02-07 19:21:02,930 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 36 selfloop transitions, 6 changer transitions 0/45 dead transitions.
[2024-02-07 19:21:02,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 218 flow
[2024-02-07 19:21:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-02-07 19:21:02,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-02-07 19:21:02,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions.
[2024-02-07 19:21:02,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5
[2024-02-07 19:21:02,932 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 94 flow. Second operand 4 states and 70 transitions.
[2024-02-07 19:21:02,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 218 flow
[2024-02-07 19:21:02,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 45 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-02-07 19:21:02,934 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 120 flow
[2024-02-07 19:21:02,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=38, PETRI_TRANSITIONS=33}
[2024-02-07 19:21:02,935 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places.
[2024-02-07 19:21:02,935 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 120 flow
[2024-02-07 19:21:02,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:02,936 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:02,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:02,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-02-07 19:21:02,936 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:02,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:02,937 INFO L85 PathProgramCache]: Analyzing trace with hash 661590501, now seen corresponding path program 1 times
[2024-02-07 19:21:02,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:02,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482541794]
[2024-02-07 19:21:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:02,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:03,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:03,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:03,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482541794]
[2024-02-07 19:21:03,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482541794] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:03,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:03,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-02-07 19:21:03,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967258659]
[2024-02-07 19:21:03,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:03,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-02-07 19:21:03,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:03,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-02-07 19:21:03,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-02-07 19:21:03,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35
[2024-02-07 19:21:03,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:03,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:03,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35
[2024-02-07 19:21:03,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:03,089 INFO L124 PetriNetUnfolderBase]: 129/235 cut-off events.
[2024-02-07 19:21:03,090 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES.
[2024-02-07 19:21:03,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 235 events. 129/235 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 714 event pairs, 33 based on Foata normal form. 6/236 useless extension candidates. Maximal degree in co-relation 368. Up to 86 conditions per place.
[2024-02-07 19:21:03,091 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 36 selfloop transitions, 6 changer transitions 0/45 dead transitions.
[2024-02-07 19:21:03,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 232 flow
[2024-02-07 19:21:03,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-02-07 19:21:03,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-02-07 19:21:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions.
[2024-02-07 19:21:03,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5
[2024-02-07 19:21:03,093 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 120 flow. Second operand 4 states and 70 transitions.
[2024-02-07 19:21:03,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 232 flow
[2024-02-07 19:21:03,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-02-07 19:21:03,097 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 141 flow
[2024-02-07 19:21:03,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=41, PETRI_TRANSITIONS=33}
[2024-02-07 19:21:03,100 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places.
[2024-02-07 19:21:03,100 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 141 flow
[2024-02-07 19:21:03,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:03,100 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:03,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:03,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-02-07 19:21:03,101 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:03,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:03,101 INFO L85 PathProgramCache]: Analyzing trace with hash 661594221, now seen corresponding path program 2 times
[2024-02-07 19:21:03,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:03,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126519135]
[2024-02-07 19:21:03,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:03,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:03,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:03,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126519135]
[2024-02-07 19:21:03,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126519135] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:03,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:03,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-02-07 19:21:03,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372552525]
[2024-02-07 19:21:03,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:03,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-02-07 19:21:03,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:03,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-02-07 19:21:03,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-02-07 19:21:03,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35
[2024-02-07 19:21:03,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:03,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:03,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35
[2024-02-07 19:21:03,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:03,255 INFO L124 PetriNetUnfolderBase]: 123/223 cut-off events.
[2024-02-07 19:21:03,256 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES.
[2024-02-07 19:21:03,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 223 events. 123/223 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 657 event pairs, 44 based on Foata normal form. 6/224 useless extension candidates. Maximal degree in co-relation 386. Up to 111 conditions per place.
[2024-02-07 19:21:03,258 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 36 selfloop transitions, 6 changer transitions 0/45 dead transitions.
[2024-02-07 19:21:03,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 251 flow
[2024-02-07 19:21:03,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-02-07 19:21:03,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-02-07 19:21:03,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions.
[2024-02-07 19:21:03,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857
[2024-02-07 19:21:03,262 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 141 flow. Second operand 4 states and 68 transitions.
[2024-02-07 19:21:03,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 251 flow
[2024-02-07 19:21:03,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 232 flow, removed 2 selfloop flow, removed 4 redundant places.
[2024-02-07 19:21:03,266 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 128 flow
[2024-02-07 19:21:03,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=39, PETRI_TRANSITIONS=32}
[2024-02-07 19:21:03,268 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places.
[2024-02-07 19:21:03,268 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 128 flow
[2024-02-07 19:21:03,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:03,268 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:03,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:03,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-02-07 19:21:03,269 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:03,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:03,270 INFO L85 PathProgramCache]: Analyzing trace with hash 661594491, now seen corresponding path program 1 times
[2024-02-07 19:21:03,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:03,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888655115]
[2024-02-07 19:21:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:03,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:03,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:03,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888655115]
[2024-02-07 19:21:03,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888655115] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:03,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:03,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-02-07 19:21:03,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078214188]
[2024-02-07 19:21:03,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:03,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-02-07 19:21:03,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:03,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-02-07 19:21:03,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-02-07 19:21:03,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35
[2024-02-07 19:21:03,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:03,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:03,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35
[2024-02-07 19:21:03,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:03,426 INFO L124 PetriNetUnfolderBase]: 127/232 cut-off events.
[2024-02-07 19:21:03,426 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES.
[2024-02-07 19:21:03,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 232 events. 127/232 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 690 event pairs, 46 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 368. Up to 102 conditions per place.
[2024-02-07 19:21:03,428 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 37 selfloop transitions, 6 changer transitions 0/46 dead transitions.
[2024-02-07 19:21:03,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 250 flow
[2024-02-07 19:21:03,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-02-07 19:21:03,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-02-07 19:21:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions.
[2024-02-07 19:21:03,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857
[2024-02-07 19:21:03,429 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 128 flow. Second operand 4 states and 68 transitions.
[2024-02-07 19:21:03,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 250 flow
[2024-02-07 19:21:03,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 241 flow, removed 1 selfloop flow, removed 2 redundant places.
[2024-02-07 19:21:03,431 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 150 flow
[2024-02-07 19:21:03,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=42, PETRI_TRANSITIONS=33}
[2024-02-07 19:21:03,432 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places.
[2024-02-07 19:21:03,432 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 150 flow
[2024-02-07 19:21:03,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:03,432 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:03,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:03,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-02-07 19:21:03,433 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:03,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:03,433 INFO L85 PathProgramCache]: Analyzing trace with hash 668123091, now seen corresponding path program 2 times
[2024-02-07 19:21:03,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:03,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976144672]
[2024-02-07 19:21:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:03,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:03,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:03,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976144672]
[2024-02-07 19:21:03,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976144672] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:03,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:03,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-02-07 19:21:03,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971434898]
[2024-02-07 19:21:03,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:03,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-02-07 19:21:03,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:03,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-02-07 19:21:03,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-02-07 19:21:03,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35
[2024-02-07 19:21:03,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:03,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:03,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35
[2024-02-07 19:21:03,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:03,545 INFO L124 PetriNetUnfolderBase]: 123/225 cut-off events.
[2024-02-07 19:21:03,545 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES.
[2024-02-07 19:21:03,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 225 events. 123/225 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 660 event pairs, 41 based on Foata normal form. 4/225 useless extension candidates. Maximal degree in co-relation 317. Up to 104 conditions per place.
[2024-02-07 19:21:03,547 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 33 selfloop transitions, 6 changer transitions 0/42 dead transitions.
[2024-02-07 19:21:03,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 243 flow
[2024-02-07 19:21:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-02-07 19:21:03,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-02-07 19:21:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions.
[2024-02-07 19:21:03,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143
[2024-02-07 19:21:03,548 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 150 flow. Second operand 4 states and 65 transitions.
[2024-02-07 19:21:03,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 243 flow
[2024-02-07 19:21:03,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 235 flow, removed 1 selfloop flow, removed 2 redundant places.
[2024-02-07 19:21:03,550 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 148 flow
[2024-02-07 19:21:03,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=42, PETRI_TRANSITIONS=32}
[2024-02-07 19:21:03,551 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places.
[2024-02-07 19:21:03,551 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 148 flow
[2024-02-07 19:21:03,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:03,551 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:03,551 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]
[2024-02-07 19:21:03,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-02-07 19:21:03,552 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:03,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1875972979, now seen corresponding path program 1 times
[2024-02-07 19:21:03,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:03,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883714555]
[2024-02-07 19:21:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:03,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:03,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:03,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883714555]
[2024-02-07 19:21:03,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883714555] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:03,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:03,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-02-07 19:21:03,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645348089]
[2024-02-07 19:21:03,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:03,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-02-07 19:21:03,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-02-07 19:21:03,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2024-02-07 19:21:03,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:03,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 148 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:03,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:03,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:03,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:04,015 INFO L124 PetriNetUnfolderBase]: 218/386 cut-off events.
[2024-02-07 19:21:04,015 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES.
[2024-02-07 19:21:04,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 386 events. 218/386 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1424 event pairs, 17 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 394. Up to 167 conditions per place.
[2024-02-07 19:21:04,018 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 49 selfloop transitions, 14 changer transitions 14/79 dead transitions.
[2024-02-07 19:21:04,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 79 transitions, 475 flow
[2024-02-07 19:21:04,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions.
[2024-02-07 19:21:04,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4
[2024-02-07 19:21:04,020 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 148 flow. Second operand 8 states and 112 transitions.
[2024-02-07 19:21:04,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 79 transitions, 475 flow
[2024-02-07 19:21:04,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 446 flow, removed 2 selfloop flow, removed 3 redundant places.
[2024-02-07 19:21:04,025 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 246 flow
[2024-02-07 19:21:04,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=246, PETRI_PLACES=52, PETRI_TRANSITIONS=41}
[2024-02-07 19:21:04,026 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places.
[2024-02-07 19:21:04,028 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 246 flow
[2024-02-07 19:21:04,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:04,028 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:04,028 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]
[2024-02-07 19:21:04,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-02-07 19:21:04,029 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:04,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:04,029 INFO L85 PathProgramCache]: Analyzing trace with hash 593071581, now seen corresponding path program 2 times
[2024-02-07 19:21:04,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:04,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826383510]
[2024-02-07 19:21:04,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:04,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:04,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:04,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826383510]
[2024-02-07 19:21:04,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826383510] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:04,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:04,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-02-07 19:21:04,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129762261]
[2024-02-07 19:21:04,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:04,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-02-07 19:21:04,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:04,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-02-07 19:21:04,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2024-02-07 19:21:04,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35
[2024-02-07 19:21:04,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 246 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:04,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:04,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35
[2024-02-07 19:21:04,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:04,427 INFO L124 PetriNetUnfolderBase]: 225/410 cut-off events.
[2024-02-07 19:21:04,428 INFO L125 PetriNetUnfolderBase]: For 413/413 co-relation queries the response was YES.
[2024-02-07 19:21:04,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 410 events. 225/410 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1561 event pairs, 36 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 1374. Up to 187 conditions per place.
[2024-02-07 19:21:04,431 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 46 selfloop transitions, 19 changer transitions 14/82 dead transitions.
[2024-02-07 19:21:04,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 82 transitions, 599 flow
[2024-02-07 19:21:04,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:04,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions.
[2024-02-07 19:21:04,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857
[2024-02-07 19:21:04,432 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 246 flow. Second operand 8 states and 122 transitions.
[2024-02-07 19:21:04,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 82 transitions, 599 flow
[2024-02-07 19:21:04,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 82 transitions, 575 flow, removed 5 selfloop flow, removed 3 redundant places.
[2024-02-07 19:21:04,436 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 387 flow
[2024-02-07 19:21:04,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=387, PETRI_PLACES=60, PETRI_TRANSITIONS=50}
[2024-02-07 19:21:04,438 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 23 predicate places.
[2024-02-07 19:21:04,438 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 387 flow
[2024-02-07 19:21:04,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:04,438 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:04,439 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]
[2024-02-07 19:21:04,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-02-07 19:21:04,439 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:04,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash -129107785, now seen corresponding path program 3 times
[2024-02-07 19:21:04,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:04,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924970217]
[2024-02-07 19:21:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:04,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:04,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:04,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924970217]
[2024-02-07 19:21:04,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924970217] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:04,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:04,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-02-07 19:21:04,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639055322]
[2024-02-07 19:21:04,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:04,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-02-07 19:21:04,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:04,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-02-07 19:21:04,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2024-02-07 19:21:04,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:04,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 387 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:04,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:04,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:04,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:04,822 INFO L124 PetriNetUnfolderBase]: 271/475 cut-off events.
[2024-02-07 19:21:04,822 INFO L125 PetriNetUnfolderBase]: For 851/851 co-relation queries the response was YES.
[2024-02-07 19:21:04,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 475 events. 271/475 cut-off events. For 851/851 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1849 event pairs, 39 based on Foata normal form. 1/476 useless extension candidates. Maximal degree in co-relation 1743. Up to 172 conditions per place.
[2024-02-07 19:21:04,826 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 52 selfloop transitions, 19 changer transitions 12/85 dead transitions.
[2024-02-07 19:21:04,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 85 transitions, 674 flow
[2024-02-07 19:21:04,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:04,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:04,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions.
[2024-02-07 19:21:04,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856
[2024-02-07 19:21:04,827 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 387 flow. Second operand 8 states and 106 transitions.
[2024-02-07 19:21:04,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 85 transitions, 674 flow
[2024-02-07 19:21:04,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 643 flow, removed 9 selfloop flow, removed 3 redundant places.
[2024-02-07 19:21:04,832 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 414 flow
[2024-02-07 19:21:04,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=414, PETRI_PLACES=64, PETRI_TRANSITIONS=51}
[2024-02-07 19:21:04,832 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 27 predicate places.
[2024-02-07 19:21:04,833 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 414 flow
[2024-02-07 19:21:04,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:04,833 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:04,833 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]
[2024-02-07 19:21:04,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-02-07 19:21:04,834 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:04,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:04,834 INFO L85 PathProgramCache]: Analyzing trace with hash -364784107, now seen corresponding path program 4 times
[2024-02-07 19:21:04,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:04,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409925256]
[2024-02-07 19:21:04,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:04,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:04,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:04,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409925256]
[2024-02-07 19:21:04,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409925256] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:04,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:04,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-02-07 19:21:04,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871489417]
[2024-02-07 19:21:04,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:04,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-02-07 19:21:04,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:04,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-02-07 19:21:04,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2024-02-07 19:21:04,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35
[2024-02-07 19:21:04,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 414 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:04,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:04,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35
[2024-02-07 19:21:04,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:05,178 INFO L124 PetriNetUnfolderBase]: 209/383 cut-off events.
[2024-02-07 19:21:05,178 INFO L125 PetriNetUnfolderBase]: For 1058/1058 co-relation queries the response was YES.
[2024-02-07 19:21:05,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1503 conditions, 383 events. 209/383 cut-off events. For 1058/1058 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1503 event pairs, 26 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1484. Up to 195 conditions per place.
[2024-02-07 19:21:05,181 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 51 selfloop transitions, 19 changer transitions 11/84 dead transitions.
[2024-02-07 19:21:05,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 84 transitions, 744 flow
[2024-02-07 19:21:05,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:05,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions.
[2024-02-07 19:21:05,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143
[2024-02-07 19:21:05,183 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 414 flow. Second operand 8 states and 118 transitions.
[2024-02-07 19:21:05,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 84 transitions, 744 flow
[2024-02-07 19:21:05,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 84 transitions, 678 flow, removed 8 selfloop flow, removed 6 redundant places.
[2024-02-07 19:21:05,188 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 445 flow
[2024-02-07 19:21:05,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=445, PETRI_PLACES=67, PETRI_TRANSITIONS=54}
[2024-02-07 19:21:05,189 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 30 predicate places.
[2024-02-07 19:21:05,189 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 445 flow
[2024-02-07 19:21:05,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:05,189 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:05,189 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]
[2024-02-07 19:21:05,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2024-02-07 19:21:05,190 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:05,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:05,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1127220625, now seen corresponding path program 5 times
[2024-02-07 19:21:05,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:05,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783385113]
[2024-02-07 19:21:05,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:05,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:05,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:05,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783385113]
[2024-02-07 19:21:05,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783385113] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:05,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:05,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-02-07 19:21:05,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80308998]
[2024-02-07 19:21:05,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:05,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-02-07 19:21:05,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:05,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-02-07 19:21:05,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2024-02-07 19:21:05,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35
[2024-02-07 19:21:05,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 445 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:05,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:05,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35
[2024-02-07 19:21:05,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:05,520 INFO L124 PetriNetUnfolderBase]: 207/381 cut-off events.
[2024-02-07 19:21:05,520 INFO L125 PetriNetUnfolderBase]: For 962/962 co-relation queries the response was YES.
[2024-02-07 19:21:05,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 381 events. 207/381 cut-off events. For 962/962 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1495 event pairs, 18 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1438. Up to 193 conditions per place.
[2024-02-07 19:21:05,523 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 45 selfloop transitions, 22 changer transitions 11/81 dead transitions.
[2024-02-07 19:21:05,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 81 transitions, 709 flow
[2024-02-07 19:21:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:05,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions.
[2024-02-07 19:21:05,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425
[2024-02-07 19:21:05,525 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 445 flow. Second operand 8 states and 119 transitions.
[2024-02-07 19:21:05,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 81 transitions, 709 flow
[2024-02-07 19:21:05,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 667 flow, removed 3 selfloop flow, removed 6 redundant places.
[2024-02-07 19:21:05,529 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 464 flow
[2024-02-07 19:21:05,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=464, PETRI_PLACES=69, PETRI_TRANSITIONS=55}
[2024-02-07 19:21:05,530 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places.
[2024-02-07 19:21:05,530 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 464 flow
[2024-02-07 19:21:05,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:05,530 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:05,531 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]
[2024-02-07 19:21:05,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2024-02-07 19:21:05,531 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:05,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:05,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1409762257, now seen corresponding path program 6 times
[2024-02-07 19:21:05,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:05,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555522026]
[2024-02-07 19:21:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:05,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:05,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:05,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555522026]
[2024-02-07 19:21:05,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555522026] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:05,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:05,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-02-07 19:21:05,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249089295]
[2024-02-07 19:21:05,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:05,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-02-07 19:21:05,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:05,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-02-07 19:21:05,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2024-02-07 19:21:05,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35
[2024-02-07 19:21:05,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 464 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:05,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:05,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35
[2024-02-07 19:21:05,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:05,915 INFO L124 PetriNetUnfolderBase]: 217/399 cut-off events.
[2024-02-07 19:21:05,915 INFO L125 PetriNetUnfolderBase]: For 1028/1028 co-relation queries the response was YES.
[2024-02-07 19:21:05,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 399 events. 217/399 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1581 event pairs, 20 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 1517. Up to 193 conditions per place.
[2024-02-07 19:21:05,918 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 48 selfloop transitions, 22 changer transitions 10/83 dead transitions.
[2024-02-07 19:21:05,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 725 flow
[2024-02-07 19:21:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:05,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions.
[2024-02-07 19:21:05,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425
[2024-02-07 19:21:05,919 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 464 flow. Second operand 8 states and 119 transitions.
[2024-02-07 19:21:05,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 725 flow
[2024-02-07 19:21:05,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 83 transitions, 677 flow, removed 3 selfloop flow, removed 6 redundant places.
[2024-02-07 19:21:05,924 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 476 flow
[2024-02-07 19:21:05,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=476, PETRI_PLACES=71, PETRI_TRANSITIONS=56}
[2024-02-07 19:21:05,924 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 34 predicate places.
[2024-02-07 19:21:05,925 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 476 flow
[2024-02-07 19:21:05,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:05,925 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:05,925 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]
[2024-02-07 19:21:05,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2024-02-07 19:21:05,925 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:05,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1134555627, now seen corresponding path program 7 times
[2024-02-07 19:21:05,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:05,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105895102]
[2024-02-07 19:21:05,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:05,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:06,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:06,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105895102]
[2024-02-07 19:21:06,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105895102] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:06,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:06,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-02-07 19:21:06,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64943080]
[2024-02-07 19:21:06,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:06,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-02-07 19:21:06,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:06,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-02-07 19:21:06,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2024-02-07 19:21:06,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:06,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 476 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:06,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:06,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:06,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:06,254 INFO L124 PetriNetUnfolderBase]: 276/492 cut-off events.
[2024-02-07 19:21:06,254 INFO L125 PetriNetUnfolderBase]: For 1263/1263 co-relation queries the response was YES.
[2024-02-07 19:21:06,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 492 events. 276/492 cut-off events. For 1263/1263 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1894 event pairs, 41 based on Foata normal form. 1/493 useless extension candidates. Maximal degree in co-relation 1855. Up to 263 conditions per place.
[2024-02-07 19:21:06,258 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 52 selfloop transitions, 20 changer transitions 11/85 dead transitions.
[2024-02-07 19:21:06,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 751 flow
[2024-02-07 19:21:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:06,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions.
[2024-02-07 19:21:06,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375
[2024-02-07 19:21:06,259 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 476 flow. Second operand 8 states and 105 transitions.
[2024-02-07 19:21:06,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 751 flow
[2024-02-07 19:21:06,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 85 transitions, 701 flow, removed 4 selfloop flow, removed 6 redundant places.
[2024-02-07 19:21:06,264 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 476 flow
[2024-02-07 19:21:06,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=476, PETRI_PLACES=73, PETRI_TRANSITIONS=57}
[2024-02-07 19:21:06,265 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 36 predicate places.
[2024-02-07 19:21:06,265 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 476 flow
[2024-02-07 19:21:06,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:06,265 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:06,265 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]
[2024-02-07 19:21:06,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2024-02-07 19:21:06,266 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:06,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash 623428787, now seen corresponding path program 8 times
[2024-02-07 19:21:06,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:06,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458442479]
[2024-02-07 19:21:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:06,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:06,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:06,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:06,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458442479]
[2024-02-07 19:21:06,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458442479] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:06,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:06,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-02-07 19:21:06,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126965526]
[2024-02-07 19:21:06,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:06,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-02-07 19:21:06,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:06,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-02-07 19:21:06,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2024-02-07 19:21:06,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:06,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 476 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:06,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:06,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:06,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:06,608 INFO L124 PetriNetUnfolderBase]: 286/510 cut-off events.
[2024-02-07 19:21:06,609 INFO L125 PetriNetUnfolderBase]: For 1290/1290 co-relation queries the response was YES.
[2024-02-07 19:21:06,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 510 events. 286/510 cut-off events. For 1290/1290 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2020 event pairs, 45 based on Foata normal form. 1/511 useless extension candidates. Maximal degree in co-relation 1925. Up to 263 conditions per place.
[2024-02-07 19:21:06,613 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 54 selfloop transitions, 20 changer transitions 10/86 dead transitions.
[2024-02-07 19:21:06,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 754 flow
[2024-02-07 19:21:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:06,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions.
[2024-02-07 19:21:06,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375
[2024-02-07 19:21:06,615 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 476 flow. Second operand 8 states and 105 transitions.
[2024-02-07 19:21:06,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 754 flow
[2024-02-07 19:21:06,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 710 flow, removed 3 selfloop flow, removed 6 redundant places.
[2024-02-07 19:21:06,621 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 490 flow
[2024-02-07 19:21:06,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=490, PETRI_PLACES=75, PETRI_TRANSITIONS=58}
[2024-02-07 19:21:06,622 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 38 predicate places.
[2024-02-07 19:21:06,622 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 490 flow
[2024-02-07 19:21:06,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:06,622 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:06,623 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]
[2024-02-07 19:21:06,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2024-02-07 19:21:06,623 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:06,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:06,623 INFO L85 PathProgramCache]: Analyzing trace with hash -62436779, now seen corresponding path program 9 times
[2024-02-07 19:21:06,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:06,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291803344]
[2024-02-07 19:21:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:06,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:06,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:06,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291803344]
[2024-02-07 19:21:06,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291803344] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:06,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:06,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-02-07 19:21:06,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322121908]
[2024-02-07 19:21:06,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:06,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-02-07 19:21:06,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:06,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-02-07 19:21:06,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2024-02-07 19:21:06,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:06,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 490 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:06,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:06,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:06,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:06,971 INFO L124 PetriNetUnfolderBase]: 294/526 cut-off events.
[2024-02-07 19:21:06,971 INFO L125 PetriNetUnfolderBase]: For 1441/1441 co-relation queries the response was YES.
[2024-02-07 19:21:06,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2025 conditions, 526 events. 294/526 cut-off events. For 1441/1441 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2088 event pairs, 51 based on Foata normal form. 1/527 useless extension candidates. Maximal degree in co-relation 2001. Up to 195 conditions per place.
[2024-02-07 19:21:06,975 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 54 selfloop transitions, 19 changer transitions 10/85 dead transitions.
[2024-02-07 19:21:06,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 769 flow
[2024-02-07 19:21:06,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:06,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions.
[2024-02-07 19:21:06,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35
[2024-02-07 19:21:06,976 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 490 flow. Second operand 8 states and 98 transitions.
[2024-02-07 19:21:06,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 769 flow
[2024-02-07 19:21:06,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 85 transitions, 719 flow, removed 6 selfloop flow, removed 6 redundant places.
[2024-02-07 19:21:06,982 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 498 flow
[2024-02-07 19:21:06,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=498, PETRI_PLACES=76, PETRI_TRANSITIONS=59}
[2024-02-07 19:21:06,982 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 39 predicate places.
[2024-02-07 19:21:06,983 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 498 flow
[2024-02-07 19:21:06,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:06,983 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:06,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:06,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2024-02-07 19:21:06,983 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:06,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash -174325642, now seen corresponding path program 1 times
[2024-02-07 19:21:06,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:06,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437459669]
[2024-02-07 19:21:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:06,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:07,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:07,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437459669]
[2024-02-07 19:21:07,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437459669] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:07,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:07,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-02-07 19:21:07,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392642479]
[2024-02-07 19:21:07,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:07,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-02-07 19:21:07,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:07,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-02-07 19:21:07,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-02-07 19:21:07,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:07,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:07,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:07,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:07,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:07,191 INFO L124 PetriNetUnfolderBase]: 448/794 cut-off events.
[2024-02-07 19:21:07,191 INFO L125 PetriNetUnfolderBase]: For 2260/2260 co-relation queries the response was YES.
[2024-02-07 19:21:07,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 794 events. 448/794 cut-off events. For 2260/2260 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3653 event pairs, 56 based on Foata normal form. 20/814 useless extension candidates. Maximal degree in co-relation 3021. Up to 273 conditions per place.
[2024-02-07 19:21:07,197 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 97 selfloop transitions, 31 changer transitions 0/130 dead transitions.
[2024-02-07 19:21:07,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 130 transitions, 1325 flow
[2024-02-07 19:21:07,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:07,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:07,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions.
[2024-02-07 19:21:07,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857
[2024-02-07 19:21:07,199 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 498 flow. Second operand 8 states and 115 transitions.
[2024-02-07 19:21:07,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 130 transitions, 1325 flow
[2024-02-07 19:21:07,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 130 transitions, 1218 flow, removed 9 selfloop flow, removed 6 redundant places.
[2024-02-07 19:21:07,208 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 689 flow
[2024-02-07 19:21:07,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=689, PETRI_PLACES=79, PETRI_TRANSITIONS=76}
[2024-02-07 19:21:07,209 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places.
[2024-02-07 19:21:07,209 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 689 flow
[2024-02-07 19:21:07,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:07,209 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:07,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:07,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2024-02-07 19:21:07,210 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:07,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:07,210 INFO L85 PathProgramCache]: Analyzing trace with hash 46289100, now seen corresponding path program 2 times
[2024-02-07 19:21:07,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:07,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268724425]
[2024-02-07 19:21:07,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:07,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:07,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:07,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268724425]
[2024-02-07 19:21:07,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268724425] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:07,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:07,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-02-07 19:21:07,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164984669]
[2024-02-07 19:21:07,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:07,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-02-07 19:21:07,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:07,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-02-07 19:21:07,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-02-07 19:21:07,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:07,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 689 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:07,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:07,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:07,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:07,474 INFO L124 PetriNetUnfolderBase]: 579/1057 cut-off events.
[2024-02-07 19:21:07,474 INFO L125 PetriNetUnfolderBase]: For 3645/3645 co-relation queries the response was YES.
[2024-02-07 19:21:07,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 1057 events. 579/1057 cut-off events. For 3645/3645 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5261 event pairs, 69 based on Foata normal form. 24/1081 useless extension candidates. Maximal degree in co-relation 3524. Up to 504 conditions per place.
[2024-02-07 19:21:07,484 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 98 selfloop transitions, 25 changer transitions 2/127 dead transitions.
[2024-02-07 19:21:07,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 127 transitions, 1315 flow
[2024-02-07 19:21:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-02-07 19:21:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-02-07 19:21:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions.
[2024-02-07 19:21:07,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667
[2024-02-07 19:21:07,485 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 689 flow. Second operand 6 states and 98 transitions.
[2024-02-07 19:21:07,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 127 transitions, 1315 flow
[2024-02-07 19:21:07,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 127 transitions, 1295 flow, removed 9 selfloop flow, removed 1 redundant places.
[2024-02-07 19:21:07,497 INFO L231 Difference]: Finished difference. Result has 87 places, 85 transitions, 891 flow
[2024-02-07 19:21:07,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=891, PETRI_PLACES=87, PETRI_TRANSITIONS=85}
[2024-02-07 19:21:07,497 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places.
[2024-02-07 19:21:07,497 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 85 transitions, 891 flow
[2024-02-07 19:21:07,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:07,498 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:07,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:07,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2024-02-07 19:21:07,498 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:07,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2096099630, now seen corresponding path program 1 times
[2024-02-07 19:21:07,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:07,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673043937]
[2024-02-07 19:21:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:07,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:07,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:07,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673043937]
[2024-02-07 19:21:07,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673043937] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:07,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:07,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-02-07 19:21:07,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810174152]
[2024-02-07 19:21:07,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:07,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-02-07 19:21:07,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:07,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-02-07 19:21:07,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-02-07 19:21:07,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:07,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 891 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:07,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:07,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:07,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:07,743 INFO L124 PetriNetUnfolderBase]: 582/1068 cut-off events.
[2024-02-07 19:21:07,743 INFO L125 PetriNetUnfolderBase]: For 5794/5794 co-relation queries the response was YES.
[2024-02-07 19:21:07,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4988 conditions, 1068 events. 582/1068 cut-off events. For 5794/5794 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5369 event pairs, 114 based on Foata normal form. 14/1082 useless extension candidates. Maximal degree in co-relation 4184. Up to 319 conditions per place.
[2024-02-07 19:21:07,752 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 108 selfloop transitions, 23 changer transitions 9/142 dead transitions.
[2024-02-07 19:21:07,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 142 transitions, 1640 flow
[2024-02-07 19:21:07,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-02-07 19:21:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-02-07 19:21:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions.
[2024-02-07 19:21:07,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4530612244897959
[2024-02-07 19:21:07,754 INFO L175 Difference]: Start difference. First operand has 87 places, 85 transitions, 891 flow. Second operand 7 states and 111 transitions.
[2024-02-07 19:21:07,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 142 transitions, 1640 flow
[2024-02-07 19:21:07,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 142 transitions, 1578 flow, removed 26 selfloop flow, removed 3 redundant places.
[2024-02-07 19:21:07,769 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 1019 flow
[2024-02-07 19:21:07,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1019, PETRI_PLACES=92, PETRI_TRANSITIONS=93}
[2024-02-07 19:21:07,770 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 55 predicate places.
[2024-02-07 19:21:07,770 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 1019 flow
[2024-02-07 19:21:07,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:07,770 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:07,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:07,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2024-02-07 19:21:07,771 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:07,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:07,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1346602612, now seen corresponding path program 3 times
[2024-02-07 19:21:07,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:07,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346108690]
[2024-02-07 19:21:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:07,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:07,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:07,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346108690]
[2024-02-07 19:21:07,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346108690] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:07,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017286187]
[2024-02-07 19:21:07,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-02-07 19:21:07,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:07,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:07,812 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)
[2024-02-07 19:21:07,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-02-07 19:21:07,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-02-07 19:21:07,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:07,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core
[2024-02-07 19:21:07,923 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:07,974 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:08,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017286187] provided 1 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:08,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-02-07 19:21:08,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7
[2024-02-07 19:21:08,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182861641]
[2024-02-07 19:21:08,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:08,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-02-07 19:21:08,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:08,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-02-07 19:21:08,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-02-07 19:21:08,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:08,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 1019 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:08,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:08,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:08,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:08,248 INFO L124 PetriNetUnfolderBase]: 622/1154 cut-off events.
[2024-02-07 19:21:08,248 INFO L125 PetriNetUnfolderBase]: For 5970/5970 co-relation queries the response was YES.
[2024-02-07 19:21:08,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5383 conditions, 1154 events. 622/1154 cut-off events. For 5970/5970 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5851 event pairs, 64 based on Foata normal form. 12/1166 useless extension candidates. Maximal degree in co-relation 4372. Up to 428 conditions per place.
[2024-02-07 19:21:08,259 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 86 selfloop transitions, 54 changer transitions 0/142 dead transitions.
[2024-02-07 19:21:08,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 142 transitions, 1732 flow
[2024-02-07 19:21:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-02-07 19:21:08,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-02-07 19:21:08,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions.
[2024-02-07 19:21:08,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713
[2024-02-07 19:21:08,262 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 1019 flow. Second operand 6 states and 96 transitions.
[2024-02-07 19:21:08,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 142 transitions, 1732 flow
[2024-02-07 19:21:08,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 142 transitions, 1598 flow, removed 33 selfloop flow, removed 4 redundant places.
[2024-02-07 19:21:08,280 INFO L231 Difference]: Finished difference. Result has 96 places, 108 transitions, 1325 flow
[2024-02-07 19:21:08,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1325, PETRI_PLACES=96, PETRI_TRANSITIONS=108}
[2024-02-07 19:21:08,281 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 59 predicate places.
[2024-02-07 19:21:08,281 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 1325 flow
[2024-02-07 19:21:08,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:08,282 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:08,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:08,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:08,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2024-02-07 19:21:08,496 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:08,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:08,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1577860186, now seen corresponding path program 2 times
[2024-02-07 19:21:08,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:08,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823623565]
[2024-02-07 19:21:08,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:08,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:08,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:08,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:08,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823623565]
[2024-02-07 19:21:08,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823623565] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:08,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:08,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-02-07 19:21:08,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707330699]
[2024-02-07 19:21:08,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:08,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-02-07 19:21:08,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:08,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-02-07 19:21:08,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-02-07 19:21:08,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:08,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 1325 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:08,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:08,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:08,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:08,800 INFO L124 PetriNetUnfolderBase]: 697/1305 cut-off events.
[2024-02-07 19:21:08,800 INFO L125 PetriNetUnfolderBase]: For 7867/7867 co-relation queries the response was YES.
[2024-02-07 19:21:08,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6469 conditions, 1305 events. 697/1305 cut-off events. For 7867/7867 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6950 event pairs, 208 based on Foata normal form. 24/1329 useless extension candidates. Maximal degree in co-relation 5938. Up to 567 conditions per place.
[2024-02-07 19:21:08,812 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 150 selfloop transitions, 34 changer transitions 7/193 dead transitions.
[2024-02-07 19:21:08,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 193 transitions, 2476 flow
[2024-02-07 19:21:08,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions.
[2024-02-07 19:21:08,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286
[2024-02-07 19:21:08,813 INFO L175 Difference]: Start difference. First operand has 96 places, 108 transitions, 1325 flow. Second operand 8 states and 134 transitions.
[2024-02-07 19:21:08,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 193 transitions, 2476 flow
[2024-02-07 19:21:08,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 193 transitions, 2449 flow, removed 8 selfloop flow, removed 2 redundant places.
[2024-02-07 19:21:08,876 INFO L231 Difference]: Finished difference. Result has 106 places, 121 transitions, 1598 flow
[2024-02-07 19:21:08,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1598, PETRI_PLACES=106, PETRI_TRANSITIONS=121}
[2024-02-07 19:21:08,877 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 69 predicate places.
[2024-02-07 19:21:08,877 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 121 transitions, 1598 flow
[2024-02-07 19:21:08,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:08,877 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:08,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:08,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2024-02-07 19:21:08,878 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:08,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:08,878 INFO L85 PathProgramCache]: Analyzing trace with hash 921369398, now seen corresponding path program 3 times
[2024-02-07 19:21:08,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:08,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533611706]
[2024-02-07 19:21:08,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:08,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:08,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:08,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533611706]
[2024-02-07 19:21:08,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533611706] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:08,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:08,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-02-07 19:21:08,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167179979]
[2024-02-07 19:21:08,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:08,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-02-07 19:21:08,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:08,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-02-07 19:21:08,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-02-07 19:21:08,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:08,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 121 transitions, 1598 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:08,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:08,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:08,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:09,180 INFO L124 PetriNetUnfolderBase]: 698/1306 cut-off events.
[2024-02-07 19:21:09,181 INFO L125 PetriNetUnfolderBase]: For 8457/8457 co-relation queries the response was YES.
[2024-02-07 19:21:09,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6785 conditions, 1306 events. 698/1306 cut-off events. For 8457/8457 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6915 event pairs, 123 based on Foata normal form. 8/1314 useless extension candidates. Maximal degree in co-relation 6415. Up to 374 conditions per place.
[2024-02-07 19:21:09,193 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 151 selfloop transitions, 32 changer transitions 9/194 dead transitions.
[2024-02-07 19:21:09,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 194 transitions, 2617 flow
[2024-02-07 19:21:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:09,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions.
[2024-02-07 19:21:09,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715
[2024-02-07 19:21:09,195 INFO L175 Difference]: Start difference. First operand has 106 places, 121 transitions, 1598 flow. Second operand 8 states and 135 transitions.
[2024-02-07 19:21:09,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 194 transitions, 2617 flow
[2024-02-07 19:21:09,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 194 transitions, 2501 flow, removed 38 selfloop flow, removed 2 redundant places.
[2024-02-07 19:21:09,220 INFO L231 Difference]: Finished difference. Result has 114 places, 125 transitions, 1650 flow
[2024-02-07 19:21:09,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1650, PETRI_PLACES=114, PETRI_TRANSITIONS=125}
[2024-02-07 19:21:09,221 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 77 predicate places.
[2024-02-07 19:21:09,221 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 125 transitions, 1650 flow
[2024-02-07 19:21:09,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:09,222 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:09,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:09,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2024-02-07 19:21:09,222 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:09,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:09,223 INFO L85 PathProgramCache]: Analyzing trace with hash 125075096, now seen corresponding path program 4 times
[2024-02-07 19:21:09,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:09,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561160406]
[2024-02-07 19:21:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:09,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:09,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:09,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561160406]
[2024-02-07 19:21:09,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561160406] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:09,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:09,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-02-07 19:21:09,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214447372]
[2024-02-07 19:21:09,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:09,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-02-07 19:21:09,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:09,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-02-07 19:21:09,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-02-07 19:21:09,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:09,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 125 transitions, 1650 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:09,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:09,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:09,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:09,515 INFO L124 PetriNetUnfolderBase]: 597/1115 cut-off events.
[2024-02-07 19:21:09,515 INFO L125 PetriNetUnfolderBase]: For 7711/7711 co-relation queries the response was YES.
[2024-02-07 19:21:09,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5927 conditions, 1115 events. 597/1115 cut-off events. For 7711/7711 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5597 event pairs, 76 based on Foata normal form. 24/1139 useless extension candidates. Maximal degree in co-relation 5577. Up to 626 conditions per place.
[2024-02-07 19:21:09,532 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 110 selfloop transitions, 54 changer transitions 6/172 dead transitions.
[2024-02-07 19:21:09,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 2387 flow
[2024-02-07 19:21:09,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-02-07 19:21:09,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-02-07 19:21:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions.
[2024-02-07 19:21:09,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347
[2024-02-07 19:21:09,533 INFO L175 Difference]: Start difference. First operand has 114 places, 125 transitions, 1650 flow. Second operand 7 states and 110 transitions.
[2024-02-07 19:21:09,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 2387 flow
[2024-02-07 19:21:09,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 172 transitions, 2302 flow, removed 5 selfloop flow, removed 5 redundant places.
[2024-02-07 19:21:09,560 INFO L231 Difference]: Finished difference. Result has 118 places, 129 transitions, 1796 flow
[2024-02-07 19:21:09,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1796, PETRI_PLACES=118, PETRI_TRANSITIONS=129}
[2024-02-07 19:21:09,560 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 81 predicate places.
[2024-02-07 19:21:09,560 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 129 transitions, 1796 flow
[2024-02-07 19:21:09,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:09,561 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:09,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:09,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2024-02-07 19:21:09,561 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:09,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:09,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1517986770, now seen corresponding path program 5 times
[2024-02-07 19:21:09,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:09,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537677184]
[2024-02-07 19:21:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:09,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:09,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:09,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537677184]
[2024-02-07 19:21:09,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537677184] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:09,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:09,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-02-07 19:21:09,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892757784]
[2024-02-07 19:21:09,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:09,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-02-07 19:21:09,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:09,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-02-07 19:21:09,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-02-07 19:21:09,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:09,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 129 transitions, 1796 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:09,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:09,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:09,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:09,836 INFO L124 PetriNetUnfolderBase]: 766/1406 cut-off events.
[2024-02-07 19:21:09,837 INFO L125 PetriNetUnfolderBase]: For 9683/9683 co-relation queries the response was YES.
[2024-02-07 19:21:09,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7688 conditions, 1406 events. 766/1406 cut-off events. For 9683/9683 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7415 event pairs, 80 based on Foata normal form. 4/1410 useless extension candidates. Maximal degree in co-relation 7226. Up to 661 conditions per place.
[2024-02-07 19:21:09,850 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 131 selfloop transitions, 77 changer transitions 0/210 dead transitions.
[2024-02-07 19:21:09,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 210 transitions, 3177 flow
[2024-02-07 19:21:09,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:09,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions.
[2024-02-07 19:21:09,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3964285714285714
[2024-02-07 19:21:09,851 INFO L175 Difference]: Start difference. First operand has 118 places, 129 transitions, 1796 flow. Second operand 8 states and 111 transitions.
[2024-02-07 19:21:09,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 210 transitions, 3177 flow
[2024-02-07 19:21:09,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 210 transitions, 3095 flow, removed 20 selfloop flow, removed 2 redundant places.
[2024-02-07 19:21:09,886 INFO L231 Difference]: Finished difference. Result has 127 places, 157 transitions, 2424 flow
[2024-02-07 19:21:09,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2424, PETRI_PLACES=127, PETRI_TRANSITIONS=157}
[2024-02-07 19:21:09,886 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 90 predicate places.
[2024-02-07 19:21:09,886 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 157 transitions, 2424 flow
[2024-02-07 19:21:09,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:09,887 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:09,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:09,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2024-02-07 19:21:09,887 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:09,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash 489360034, now seen corresponding path program 4 times
[2024-02-07 19:21:09,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:09,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037122270]
[2024-02-07 19:21:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:09,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:09,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:09,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037122270]
[2024-02-07 19:21:09,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037122270] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:09,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:09,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-02-07 19:21:09,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805161324]
[2024-02-07 19:21:09,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:09,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-02-07 19:21:09,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:09,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-02-07 19:21:09,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-02-07 19:21:09,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:09,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 157 transitions, 2424 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:09,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:09,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:09,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:10,215 INFO L124 PetriNetUnfolderBase]: 729/1349 cut-off events.
[2024-02-07 19:21:10,215 INFO L125 PetriNetUnfolderBase]: For 12823/12823 co-relation queries the response was YES.
[2024-02-07 19:21:10,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8109 conditions, 1349 events. 729/1349 cut-off events. For 12823/12823 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7132 event pairs, 220 based on Foata normal form. 28/1377 useless extension candidates. Maximal degree in co-relation 7690. Up to 787 conditions per place.
[2024-02-07 19:21:10,227 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 158 selfloop transitions, 63 changer transitions 2/225 dead transitions.
[2024-02-07 19:21:10,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 225 transitions, 3549 flow
[2024-02-07 19:21:10,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions.
[2024-02-07 19:21:10,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286
[2024-02-07 19:21:10,228 INFO L175 Difference]: Start difference. First operand has 127 places, 157 transitions, 2424 flow. Second operand 8 states and 134 transitions.
[2024-02-07 19:21:10,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 225 transitions, 3549 flow
[2024-02-07 19:21:10,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 225 transitions, 3518 flow, removed 6 selfloop flow, removed 3 redundant places.
[2024-02-07 19:21:10,270 INFO L231 Difference]: Finished difference. Result has 134 places, 168 transitions, 2771 flow
[2024-02-07 19:21:10,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2771, PETRI_PLACES=134, PETRI_TRANSITIONS=168}
[2024-02-07 19:21:10,271 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 97 predicate places.
[2024-02-07 19:21:10,271 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 168 transitions, 2771 flow
[2024-02-07 19:21:10,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:10,271 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:10,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:10,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2024-02-07 19:21:10,271 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:10,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:10,272 INFO L85 PathProgramCache]: Analyzing trace with hash 210142610, now seen corresponding path program 6 times
[2024-02-07 19:21:10,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:10,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888171383]
[2024-02-07 19:21:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:10,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:10,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:10,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888171383]
[2024-02-07 19:21:10,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888171383] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:10,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:10,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-02-07 19:21:10,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831977682]
[2024-02-07 19:21:10,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:10,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-02-07 19:21:10,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:10,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-02-07 19:21:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-02-07 19:21:10,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:10,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 168 transitions, 2771 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:10,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:10,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:10,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:10,562 INFO L124 PetriNetUnfolderBase]: 683/1253 cut-off events.
[2024-02-07 19:21:10,562 INFO L125 PetriNetUnfolderBase]: For 13778/13778 co-relation queries the response was YES.
[2024-02-07 19:21:10,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8149 conditions, 1253 events. 683/1253 cut-off events. For 13778/13778 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6348 event pairs, 60 based on Foata normal form. 8/1261 useless extension candidates. Maximal degree in co-relation 8017. Up to 487 conditions per place.
[2024-02-07 19:21:10,575 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 167 selfloop transitions, 31 changer transitions 2/202 dead transitions.
[2024-02-07 19:21:10,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 202 transitions, 3485 flow
[2024-02-07 19:21:10,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-02-07 19:21:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-02-07 19:21:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions.
[2024-02-07 19:21:10,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713
[2024-02-07 19:21:10,576 INFO L175 Difference]: Start difference. First operand has 134 places, 168 transitions, 2771 flow. Second operand 6 states and 96 transitions.
[2024-02-07 19:21:10,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 202 transitions, 3485 flow
[2024-02-07 19:21:10,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 202 transitions, 3371 flow, removed 35 selfloop flow, removed 3 redundant places.
[2024-02-07 19:21:10,628 INFO L231 Difference]: Finished difference. Result has 136 places, 165 transitions, 2702 flow
[2024-02-07 19:21:10,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2626, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2702, PETRI_PLACES=136, PETRI_TRANSITIONS=165}
[2024-02-07 19:21:10,632 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 99 predicate places.
[2024-02-07 19:21:10,632 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 165 transitions, 2702 flow
[2024-02-07 19:21:10,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:10,633 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:10,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:10,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2024-02-07 19:21:10,633 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:10,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:10,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1490624186, now seen corresponding path program 5 times
[2024-02-07 19:21:10,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:10,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727865]
[2024-02-07 19:21:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:10,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:10,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:10,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727865]
[2024-02-07 19:21:10,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727865] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:10,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:10,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-02-07 19:21:10,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685880323]
[2024-02-07 19:21:10,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:10,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-02-07 19:21:10,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:10,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-02-07 19:21:10,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-02-07 19:21:10,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:10,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 165 transitions, 2702 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:10,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:10,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:10,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:10,960 INFO L124 PetriNetUnfolderBase]: 688/1262 cut-off events.
[2024-02-07 19:21:10,960 INFO L125 PetriNetUnfolderBase]: For 13744/13744 co-relation queries the response was YES.
[2024-02-07 19:21:10,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8111 conditions, 1262 events. 688/1262 cut-off events. For 13744/13744 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6400 event pairs, 134 based on Foata normal form. 6/1268 useless extension candidates. Maximal degree in co-relation 7503. Up to 423 conditions per place.
[2024-02-07 19:21:10,973 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 171 selfloop transitions, 46 changer transitions 4/223 dead transitions.
[2024-02-07 19:21:10,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 223 transitions, 3716 flow
[2024-02-07 19:21:10,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:10,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions.
[2024-02-07 19:21:10,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857
[2024-02-07 19:21:10,974 INFO L175 Difference]: Start difference. First operand has 136 places, 165 transitions, 2702 flow. Second operand 8 states and 129 transitions.
[2024-02-07 19:21:10,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 223 transitions, 3716 flow
[2024-02-07 19:21:11,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 223 transitions, 3592 flow, removed 11 selfloop flow, removed 4 redundant places.
[2024-02-07 19:21:11,025 INFO L231 Difference]: Finished difference. Result has 139 places, 171 transitions, 2814 flow
[2024-02-07 19:21:11,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2575, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2814, PETRI_PLACES=139, PETRI_TRANSITIONS=171}
[2024-02-07 19:21:11,027 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 102 predicate places.
[2024-02-07 19:21:11,027 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 171 transitions, 2814 flow
[2024-02-07 19:21:11,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:11,028 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:11,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:11,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28
[2024-02-07 19:21:11,028 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:11,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:11,028 INFO L85 PathProgramCache]: Analyzing trace with hash 924964018, now seen corresponding path program 6 times
[2024-02-07 19:21:11,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:11,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83903504]
[2024-02-07 19:21:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:11,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:11,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:11,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:11,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83903504]
[2024-02-07 19:21:11,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83903504] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:11,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-02-07 19:21:11,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-02-07 19:21:11,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467835850]
[2024-02-07 19:21:11,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:11,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-02-07 19:21:11,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:11,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-02-07 19:21:11,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-02-07 19:21:11,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:11,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 171 transitions, 2814 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:11,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:11,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:11,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:11,282 INFO L124 PetriNetUnfolderBase]: 651/1183 cut-off events.
[2024-02-07 19:21:11,282 INFO L125 PetriNetUnfolderBase]: For 13598/13598 co-relation queries the response was YES.
[2024-02-07 19:21:11,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7822 conditions, 1183 events. 651/1183 cut-off events. For 13598/13598 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5865 event pairs, 160 based on Foata normal form. 4/1187 useless extension candidates. Maximal degree in co-relation 7503. Up to 431 conditions per place.
[2024-02-07 19:21:11,294 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 146 selfloop transitions, 37 changer transitions 7/192 dead transitions.
[2024-02-07 19:21:11,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 192 transitions, 3353 flow
[2024-02-07 19:21:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-02-07 19:21:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-02-07 19:21:11,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions.
[2024-02-07 19:21:11,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877551020408163
[2024-02-07 19:21:11,296 INFO L175 Difference]: Start difference. First operand has 139 places, 171 transitions, 2814 flow. Second operand 7 states and 95 transitions.
[2024-02-07 19:21:11,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 192 transitions, 3353 flow
[2024-02-07 19:21:11,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 192 transitions, 3308 flow, removed 16 selfloop flow, removed 1 redundant places.
[2024-02-07 19:21:11,369 INFO L231 Difference]: Finished difference. Result has 145 places, 167 transitions, 2781 flow
[2024-02-07 19:21:11,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2714, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2781, PETRI_PLACES=145, PETRI_TRANSITIONS=167}
[2024-02-07 19:21:11,370 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 108 predicate places.
[2024-02-07 19:21:11,371 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 167 transitions, 2781 flow
[2024-02-07 19:21:11,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:11,371 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:11,371 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]
[2024-02-07 19:21:11,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29
[2024-02-07 19:21:11,371 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:11,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:11,372 INFO L85 PathProgramCache]: Analyzing trace with hash -432272689, now seen corresponding path program 1 times
[2024-02-07 19:21:11,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:11,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091354747]
[2024-02-07 19:21:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:11,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:11,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:11,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091354747]
[2024-02-07 19:21:11,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091354747] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:11,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960739810]
[2024-02-07 19:21:11,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:11,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:11,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:11,496 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)
[2024-02-07 19:21:11,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-02-07 19:21:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:11,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:11,583 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:11,707 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:11,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:11,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960739810] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:11,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:11,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:11,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959701101]
[2024-02-07 19:21:11,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:11,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:11,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:11,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:11,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:12,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:12,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 167 transitions, 2781 flow. Second operand has 23 states, 23 states have (on average 7.434782608695652) internal successors, (171), 23 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:12,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:12,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:12,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:12,654 INFO L124 PetriNetUnfolderBase]: 668/1242 cut-off events.
[2024-02-07 19:21:12,654 INFO L125 PetriNetUnfolderBase]: For 12858/12858 co-relation queries the response was YES.
[2024-02-07 19:21:12,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7966 conditions, 1242 events. 668/1242 cut-off events. For 12858/12858 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6309 event pairs, 27 based on Foata normal form. 1/1243 useless extension candidates. Maximal degree in co-relation 7710. Up to 299 conditions per place.
[2024-02-07 19:21:12,665 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 81 selfloop transitions, 122 changer transitions 53/258 dead transitions.
[2024-02-07 19:21:12,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 258 transitions, 4209 flow
[2024-02-07 19:21:12,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2024-02-07 19:21:12,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2024-02-07 19:21:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 193 transitions.
[2024-02-07 19:21:12,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3243697478991597
[2024-02-07 19:21:12,667 INFO L175 Difference]: Start difference. First operand has 145 places, 167 transitions, 2781 flow. Second operand 17 states and 193 transitions.
[2024-02-07 19:21:12,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 258 transitions, 4209 flow
[2024-02-07 19:21:12,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 258 transitions, 4105 flow, removed 6 selfloop flow, removed 4 redundant places.
[2024-02-07 19:21:12,710 INFO L231 Difference]: Finished difference. Result has 161 places, 178 transitions, 3281 flow
[2024-02-07 19:21:12,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2699, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3281, PETRI_PLACES=161, PETRI_TRANSITIONS=178}
[2024-02-07 19:21:12,710 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 124 predicate places.
[2024-02-07 19:21:12,711 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 178 transitions, 3281 flow
[2024-02-07 19:21:12,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.434782608695652) internal successors, (171), 23 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:12,711 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:12,711 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]
[2024-02-07 19:21:12,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:12,927 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,SelfDestructingSolverStorable30
[2024-02-07 19:21:12,927 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:12,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:12,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1533838905, now seen corresponding path program 2 times
[2024-02-07 19:21:12,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:12,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138148277]
[2024-02-07 19:21:12,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:12,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:13,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:13,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138148277]
[2024-02-07 19:21:13,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138148277] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:13,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171947914]
[2024-02-07 19:21:13,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-02-07 19:21:13,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:13,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:13,064 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)
[2024-02-07 19:21:13,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-02-07 19:21:13,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-02-07 19:21:13,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:13,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:13,139 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:13,244 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:13,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171947914] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:13,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:13,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:13,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203813582]
[2024-02-07 19:21:13,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:13,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:13,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:13,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:13,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:13,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:13,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 178 transitions, 3281 flow. Second operand has 23 states, 23 states have (on average 7.304347826086956) internal successors, (168), 23 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:13,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:13,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:13,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:14,241 INFO L124 PetriNetUnfolderBase]: 685/1283 cut-off events.
[2024-02-07 19:21:14,241 INFO L125 PetriNetUnfolderBase]: For 14634/14634 co-relation queries the response was YES.
[2024-02-07 19:21:14,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8955 conditions, 1283 events. 685/1283 cut-off events. For 14634/14634 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6625 event pairs, 25 based on Foata normal form. 3/1286 useless extension candidates. Maximal degree in co-relation 8887. Up to 261 conditions per place.
[2024-02-07 19:21:14,255 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 103 selfloop transitions, 165 changer transitions 20/290 dead transitions.
[2024-02-07 19:21:14,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 290 transitions, 5285 flow
[2024-02-07 19:21:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2024-02-07 19:21:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states.
[2024-02-07 19:21:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 245 transitions.
[2024-02-07 19:21:14,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30434782608695654
[2024-02-07 19:21:14,257 INFO L175 Difference]: Start difference. First operand has 161 places, 178 transitions, 3281 flow. Second operand 23 states and 245 transitions.
[2024-02-07 19:21:14,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 290 transitions, 5285 flow
[2024-02-07 19:21:14,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 290 transitions, 5052 flow, removed 42 selfloop flow, removed 13 redundant places.
[2024-02-07 19:21:14,313 INFO L231 Difference]: Finished difference. Result has 168 places, 221 transitions, 4315 flow
[2024-02-07 19:21:14,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3120, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4315, PETRI_PLACES=168, PETRI_TRANSITIONS=221}
[2024-02-07 19:21:14,314 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 131 predicate places.
[2024-02-07 19:21:14,314 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 221 transitions, 4315 flow
[2024-02-07 19:21:14,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.304347826086956) internal successors, (168), 23 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:14,314 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:14,314 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]
[2024-02-07 19:21:14,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:14,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:14,529 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:14,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:14,530 INFO L85 PathProgramCache]: Analyzing trace with hash -870914065, now seen corresponding path program 3 times
[2024-02-07 19:21:14,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:14,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003962656]
[2024-02-07 19:21:14,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:14,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:14,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:14,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003962656]
[2024-02-07 19:21:14,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003962656] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:14,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449060550]
[2024-02-07 19:21:14,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-02-07 19:21:14,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:14,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:14,688 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)
[2024-02-07 19:21:14,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-02-07 19:21:14,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-02-07 19:21:14,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:14,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:14,758 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:14,885 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:15,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449060550] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:15,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:15,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:15,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886861347]
[2024-02-07 19:21:15,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:15,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:15,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:15,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:15,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:15,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:15,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 221 transitions, 4315 flow. Second operand has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:15,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:15,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:15,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:16,187 INFO L124 PetriNetUnfolderBase]: 868/1564 cut-off events.
[2024-02-07 19:21:16,188 INFO L125 PetriNetUnfolderBase]: For 20768/20768 co-relation queries the response was YES.
[2024-02-07 19:21:16,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12446 conditions, 1564 events. 868/1564 cut-off events. For 20768/20768 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8355 event pairs, 23 based on Foata normal form. 18/1582 useless extension candidates. Maximal degree in co-relation 12383. Up to 311 conditions per place.
[2024-02-07 19:21:16,204 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 123 selfloop transitions, 172 changer transitions 106/403 dead transitions.
[2024-02-07 19:21:16,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 403 transitions, 7999 flow
[2024-02-07 19:21:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2024-02-07 19:21:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2024-02-07 19:21:16,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 283 transitions.
[2024-02-07 19:21:16,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32342857142857145
[2024-02-07 19:21:16,206 INFO L175 Difference]: Start difference. First operand has 168 places, 221 transitions, 4315 flow. Second operand 25 states and 283 transitions.
[2024-02-07 19:21:16,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 403 transitions, 7999 flow
[2024-02-07 19:21:16,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 403 transitions, 7419 flow, removed 46 selfloop flow, removed 12 redundant places.
[2024-02-07 19:21:16,286 INFO L231 Difference]: Finished difference. Result has 188 places, 246 transitions, 5000 flow
[2024-02-07 19:21:16,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3965, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=5000, PETRI_PLACES=188, PETRI_TRANSITIONS=246}
[2024-02-07 19:21:16,287 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 151 predicate places.
[2024-02-07 19:21:16,287 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 246 transitions, 5000 flow
[2024-02-07 19:21:16,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:16,287 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:16,287 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]
[2024-02-07 19:21:16,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:16,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:16,496 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:16,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:16,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1235245927, now seen corresponding path program 4 times
[2024-02-07 19:21:16,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:16,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62123724]
[2024-02-07 19:21:16,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:16,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:16,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:16,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62123724]
[2024-02-07 19:21:16,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62123724] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:16,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987434604]
[2024-02-07 19:21:16,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-02-07 19:21:16,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:16,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:16,642 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)
[2024-02-07 19:21:16,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-02-07 19:21:16,713 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-02-07 19:21:16,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:16,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:16,715 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:16,829 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:16,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987434604] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:16,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:16,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:16,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540705817]
[2024-02-07 19:21:16,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:16,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:16,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:16,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:16,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:17,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:17,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 246 transitions, 5000 flow. Second operand has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:17,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:17,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:17,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:18,145 INFO L124 PetriNetUnfolderBase]: 972/1696 cut-off events.
[2024-02-07 19:21:18,145 INFO L125 PetriNetUnfolderBase]: For 25407/25407 co-relation queries the response was YES.
[2024-02-07 19:21:18,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14423 conditions, 1696 events. 972/1696 cut-off events. For 25407/25407 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8894 event pairs, 27 based on Foata normal form. 2/1698 useless extension candidates. Maximal degree in co-relation 14351. Up to 327 conditions per place.
[2024-02-07 19:21:18,165 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 95 selfloop transitions, 329 changer transitions 20/446 dead transitions.
[2024-02-07 19:21:18,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 446 transitions, 9183 flow
[2024-02-07 19:21:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2024-02-07 19:21:18,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2024-02-07 19:21:18,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 359 transitions.
[2024-02-07 19:21:18,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2699248120300752
[2024-02-07 19:21:18,167 INFO L175 Difference]: Start difference. First operand has 188 places, 246 transitions, 5000 flow. Second operand 38 states and 359 transitions.
[2024-02-07 19:21:18,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 446 transitions, 9183 flow
[2024-02-07 19:21:18,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 446 transitions, 8404 flow, removed 111 selfloop flow, removed 21 redundant places.
[2024-02-07 19:21:18,331 INFO L231 Difference]: Finished difference. Result has 196 places, 370 transitions, 7511 flow
[2024-02-07 19:21:18,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4467, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7511, PETRI_PLACES=196, PETRI_TRANSITIONS=370}
[2024-02-07 19:21:18,332 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 159 predicate places.
[2024-02-07 19:21:18,332 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 370 transitions, 7511 flow
[2024-02-07 19:21:18,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:18,332 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:18,332 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]
[2024-02-07 19:21:18,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:18,533 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,SelfDestructingSolverStorable33
[2024-02-07 19:21:18,533 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:18,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1301736955, now seen corresponding path program 5 times
[2024-02-07 19:21:18,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:18,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339019235]
[2024-02-07 19:21:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:18,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:18,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:18,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339019235]
[2024-02-07 19:21:18,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339019235] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:18,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547917959]
[2024-02-07 19:21:18,653 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-02-07 19:21:18,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:18,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:18,656 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)
[2024-02-07 19:21:18,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-02-07 19:21:18,747 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2024-02-07 19:21:18,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:18,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 11 conjunts are in the unsatisfiable core
[2024-02-07 19:21:18,749 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:18,843 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:18,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547917959] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:18,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:18,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 18
[2024-02-07 19:21:18,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799954151]
[2024-02-07 19:21:18,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:18,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-02-07 19:21:18,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:18,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-02-07 19:21:18,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342
[2024-02-07 19:21:19,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:19,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 370 transitions, 7511 flow. Second operand has 19 states, 19 states have (on average 7.421052631578948) internal successors, (141), 19 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:19,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:19,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:19,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:19,580 INFO L124 PetriNetUnfolderBase]: 961/1675 cut-off events.
[2024-02-07 19:21:19,580 INFO L125 PetriNetUnfolderBase]: For 21137/21137 co-relation queries the response was YES.
[2024-02-07 19:21:19,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14220 conditions, 1675 events. 961/1675 cut-off events. For 21137/21137 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8705 event pairs, 33 based on Foata normal form. 2/1677 useless extension candidates. Maximal degree in co-relation 14155. Up to 322 conditions per place.
[2024-02-07 19:21:19,590 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 43 selfloop transitions, 80 changer transitions 304/429 dead transitions.
[2024-02-07 19:21:19,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 429 transitions, 9010 flow
[2024-02-07 19:21:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2024-02-07 19:21:19,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2024-02-07 19:21:19,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 189 transitions.
[2024-02-07 19:21:19,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3176470588235294
[2024-02-07 19:21:19,599 INFO L175 Difference]: Start difference. First operand has 196 places, 370 transitions, 7511 flow. Second operand 17 states and 189 transitions.
[2024-02-07 19:21:19,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 429 transitions, 9010 flow
[2024-02-07 19:21:19,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 429 transitions, 8364 flow, removed 127 selfloop flow, removed 13 redundant places.
[2024-02-07 19:21:19,699 INFO L231 Difference]: Finished difference. Result has 196 places, 110 transitions, 2048 flow
[2024-02-07 19:21:19,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6917, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2048, PETRI_PLACES=196, PETRI_TRANSITIONS=110}
[2024-02-07 19:21:19,699 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 159 predicate places.
[2024-02-07 19:21:19,700 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 110 transitions, 2048 flow
[2024-02-07 19:21:19,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.421052631578948) internal successors, (141), 19 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:19,700 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:19,700 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]
[2024-02-07 19:21:19,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:19,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:19,908 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:19,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:19,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1461050257, now seen corresponding path program 6 times
[2024-02-07 19:21:19,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:19,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307802856]
[2024-02-07 19:21:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:19,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:20,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:20,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307802856]
[2024-02-07 19:21:20,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307802856] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:20,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486583346]
[2024-02-07 19:21:20,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-02-07 19:21:20,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:20,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:20,036 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:20,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-02-07 19:21:20,108 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-02-07 19:21:20,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:20,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:20,111 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:20,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:20,211 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:20,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486583346] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:20,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:20,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:20,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99395061]
[2024-02-07 19:21:20,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:20,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:20,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:20,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:20,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:20,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:20,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 110 transitions, 2048 flow. Second operand has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:20,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:20,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:20,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:20,968 INFO L124 PetriNetUnfolderBase]: 444/864 cut-off events.
[2024-02-07 19:21:20,968 INFO L125 PetriNetUnfolderBase]: For 9932/9932 co-relation queries the response was YES.
[2024-02-07 19:21:20,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5965 conditions, 864 events. 444/864 cut-off events. For 9932/9932 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4248 event pairs, 15 based on Foata normal form. 24/888 useless extension candidates. Maximal degree in co-relation 5920. Up to 212 conditions per place.
[2024-02-07 19:21:20,974 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 74 selfloop transitions, 103 changer transitions 14/193 dead transitions.
[2024-02-07 19:21:20,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 193 transitions, 3457 flow
[2024-02-07 19:21:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2024-02-07 19:21:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2024-02-07 19:21:20,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 248 transitions.
[2024-02-07 19:21:20,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2834285714285714
[2024-02-07 19:21:20,987 INFO L175 Difference]: Start difference. First operand has 196 places, 110 transitions, 2048 flow. Second operand 25 states and 248 transitions.
[2024-02-07 19:21:20,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 193 transitions, 3457 flow
[2024-02-07 19:21:21,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 193 transitions, 2785 flow, removed 77 selfloop flow, removed 31 redundant places.
[2024-02-07 19:21:21,014 INFO L231 Difference]: Finished difference. Result has 153 places, 142 transitions, 2430 flow
[2024-02-07 19:21:21,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2430, PETRI_PLACES=153, PETRI_TRANSITIONS=142}
[2024-02-07 19:21:21,015 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 116 predicate places.
[2024-02-07 19:21:21,015 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 142 transitions, 2430 flow
[2024-02-07 19:21:21,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:21,015 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:21,015 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]
[2024-02-07 19:21:21,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:21,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:21,238 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:21,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:21,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1812798537, now seen corresponding path program 7 times
[2024-02-07 19:21:21,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:21,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696858394]
[2024-02-07 19:21:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:21,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:21,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:21,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696858394]
[2024-02-07 19:21:21,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696858394] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:21,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240560487]
[2024-02-07 19:21:21,374 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-02-07 19:21:21,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:21,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:21,375 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:21,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-02-07 19:21:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:21,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:21,448 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:21,549 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:21,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240560487] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:21,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:21,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:21,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627108684]
[2024-02-07 19:21:21,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:21,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:21,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:21,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 142 transitions, 2430 flow. Second operand has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:21,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:21,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:21,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:22,615 INFO L124 PetriNetUnfolderBase]: 456/898 cut-off events.
[2024-02-07 19:21:22,616 INFO L125 PetriNetUnfolderBase]: For 6899/6899 co-relation queries the response was YES.
[2024-02-07 19:21:22,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5627 conditions, 898 events. 456/898 cut-off events. For 6899/6899 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4546 event pairs, 27 based on Foata normal form. 4/902 useless extension candidates. Maximal degree in co-relation 5586. Up to 283 conditions per place.
[2024-02-07 19:21:22,624 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 92 selfloop transitions, 101 changer transitions 21/216 dead transitions.
[2024-02-07 19:21:22,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 216 transitions, 3320 flow
[2024-02-07 19:21:22,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2024-02-07 19:21:22,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2024-02-07 19:21:22,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 292 transitions.
[2024-02-07 19:21:22,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2780952380952381
[2024-02-07 19:21:22,625 INFO L175 Difference]: Start difference. First operand has 153 places, 142 transitions, 2430 flow. Second operand 30 states and 292 transitions.
[2024-02-07 19:21:22,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 216 transitions, 3320 flow
[2024-02-07 19:21:22,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 216 transitions, 3147 flow, removed 24 selfloop flow, removed 10 redundant places.
[2024-02-07 19:21:22,651 INFO L231 Difference]: Finished difference. Result has 177 places, 146 transitions, 2549 flow
[2024-02-07 19:21:22,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2268, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2549, PETRI_PLACES=177, PETRI_TRANSITIONS=146}
[2024-02-07 19:21:22,652 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 140 predicate places.
[2024-02-07 19:21:22,652 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 146 transitions, 2549 flow
[2024-02-07 19:21:22,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:22,653 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:22,653 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]
[2024-02-07 19:21:22,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-02-07 19:21:22,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2024-02-07 19:21:22,868 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:22,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:22,868 INFO L85 PathProgramCache]: Analyzing trace with hash 139548065, now seen corresponding path program 8 times
[2024-02-07 19:21:22,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:22,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125768420]
[2024-02-07 19:21:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:22,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:22,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:22,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125768420]
[2024-02-07 19:21:22,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125768420] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:22,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668698696]
[2024-02-07 19:21:22,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-02-07 19:21:22,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:22,982 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:23,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-02-07 19:21:23,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-02-07 19:21:23,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:23,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:23,062 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:23,166 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:23,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668698696] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:23,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:23,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:23,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340641554]
[2024-02-07 19:21:23,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:23,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:23,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:23,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:23,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:23,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:23,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 146 transitions, 2549 flow. Second operand has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:23,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:23,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:23,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:24,145 INFO L124 PetriNetUnfolderBase]: 441/873 cut-off events.
[2024-02-07 19:21:24,145 INFO L125 PetriNetUnfolderBase]: For 6763/6763 co-relation queries the response was YES.
[2024-02-07 19:21:24,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5589 conditions, 873 events. 441/873 cut-off events. For 6763/6763 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4395 event pairs, 23 based on Foata normal form. 2/875 useless extension candidates. Maximal degree in co-relation 5545. Up to 259 conditions per place.
[2024-02-07 19:21:24,150 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 81 selfloop transitions, 81 changer transitions 55/219 dead transitions.
[2024-02-07 19:21:24,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 219 transitions, 3294 flow
[2024-02-07 19:21:24,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2024-02-07 19:21:24,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2024-02-07 19:21:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 301 transitions.
[2024-02-07 19:21:24,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27741935483870966
[2024-02-07 19:21:24,152 INFO L175 Difference]: Start difference. First operand has 177 places, 146 transitions, 2549 flow. Second operand 31 states and 301 transitions.
[2024-02-07 19:21:24,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 219 transitions, 3294 flow
[2024-02-07 19:21:24,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 219 transitions, 3030 flow, removed 20 selfloop flow, removed 21 redundant places.
[2024-02-07 19:21:24,174 INFO L231 Difference]: Finished difference. Result has 187 places, 127 transitions, 2143 flow
[2024-02-07 19:21:24,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2143, PETRI_PLACES=187, PETRI_TRANSITIONS=127}
[2024-02-07 19:21:24,175 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 150 predicate places.
[2024-02-07 19:21:24,175 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 127 transitions, 2143 flow
[2024-02-07 19:21:24,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:24,175 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:24,175 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]
[2024-02-07 19:21:24,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:24,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2024-02-07 19:21:24,378 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:24,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:24,378 INFO L85 PathProgramCache]: Analyzing trace with hash -942626907, now seen corresponding path program 9 times
[2024-02-07 19:21:24,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:24,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709413516]
[2024-02-07 19:21:24,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:24,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:24,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:24,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709413516]
[2024-02-07 19:21:24,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709413516] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:24,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022746204]
[2024-02-07 19:21:24,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-02-07 19:21:24,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:24,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:24,519 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:24,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-02-07 19:21:24,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-02-07 19:21:24,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:24,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:24,604 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:24,713 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:24,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022746204] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:24,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:24,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:24,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953066898]
[2024-02-07 19:21:24,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:24,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:24,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:24,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:24,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:24,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:24,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 127 transitions, 2143 flow. Second operand has 23 states, 23 states have (on average 7.130434782608695) internal successors, (164), 23 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:24,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:24,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:24,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:25,496 INFO L124 PetriNetUnfolderBase]: 373/733 cut-off events.
[2024-02-07 19:21:25,497 INFO L125 PetriNetUnfolderBase]: For 5822/5822 co-relation queries the response was YES.
[2024-02-07 19:21:25,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4809 conditions, 733 events. 373/733 cut-off events. For 5822/5822 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3437 event pairs, 17 based on Foata normal form. 9/742 useless extension candidates. Maximal degree in co-relation 4764. Up to 154 conditions per place.
[2024-02-07 19:21:25,501 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 57 selfloop transitions, 89 changer transitions 32/180 dead transitions.
[2024-02-07 19:21:25,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 180 transitions, 2780 flow
[2024-02-07 19:21:25,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2024-02-07 19:21:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2024-02-07 19:21:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 242 transitions.
[2024-02-07 19:21:25,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26593406593406593
[2024-02-07 19:21:25,502 INFO L175 Difference]: Start difference. First operand has 187 places, 127 transitions, 2143 flow. Second operand 26 states and 242 transitions.
[2024-02-07 19:21:25,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 180 transitions, 2780 flow
[2024-02-07 19:21:25,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 180 transitions, 2516 flow, removed 23 selfloop flow, removed 34 redundant places.
[2024-02-07 19:21:25,517 INFO L231 Difference]: Finished difference. Result has 164 places, 118 transitions, 1966 flow
[2024-02-07 19:21:25,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1966, PETRI_PLACES=164, PETRI_TRANSITIONS=118}
[2024-02-07 19:21:25,517 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 127 predicate places.
[2024-02-07 19:21:25,518 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 118 transitions, 1966 flow
[2024-02-07 19:21:25,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.130434782608695) internal successors, (164), 23 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:25,518 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:25,518 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]
[2024-02-07 19:21:25,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:25,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2024-02-07 19:21:25,719 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:25,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:25,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2064086585, now seen corresponding path program 10 times
[2024-02-07 19:21:25,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:25,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376271863]
[2024-02-07 19:21:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:25,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:25,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:25,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376271863]
[2024-02-07 19:21:25,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376271863] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:25,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887518418]
[2024-02-07 19:21:25,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-02-07 19:21:25,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:25,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:25,845 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:25,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-02-07 19:21:25,921 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-02-07 19:21:25,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:25,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:25,929 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:26,051 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:26,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887518418] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:26,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:26,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:26,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180233293]
[2024-02-07 19:21:26,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:26,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:26,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:26,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:26,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:26,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:26,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 118 transitions, 1966 flow. Second operand has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:26,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:26,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:26,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:26,734 INFO L124 PetriNetUnfolderBase]: 330/662 cut-off events.
[2024-02-07 19:21:26,734 INFO L125 PetriNetUnfolderBase]: For 4876/4876 co-relation queries the response was YES.
[2024-02-07 19:21:26,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4214 conditions, 662 events. 330/662 cut-off events. For 4876/4876 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3027 event pairs, 11 based on Foata normal form. 2/664 useless extension candidates. Maximal degree in co-relation 4176. Up to 172 conditions per place.
[2024-02-07 19:21:26,739 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 55 selfloop transitions, 90 changer transitions 10/157 dead transitions.
[2024-02-07 19:21:26,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 157 transitions, 2458 flow
[2024-02-07 19:21:26,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-02-07 19:21:26,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2024-02-07 19:21:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 159 transitions.
[2024-02-07 19:21:26,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2839285714285714
[2024-02-07 19:21:26,741 INFO L175 Difference]: Start difference. First operand has 164 places, 118 transitions, 1966 flow. Second operand 16 states and 159 transitions.
[2024-02-07 19:21:26,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 157 transitions, 2458 flow
[2024-02-07 19:21:26,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 157 transitions, 2216 flow, removed 14 selfloop flow, removed 25 redundant places.
[2024-02-07 19:21:26,759 INFO L231 Difference]: Finished difference. Result has 146 places, 119 transitions, 1952 flow
[2024-02-07 19:21:26,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1735, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1952, PETRI_PLACES=146, PETRI_TRANSITIONS=119}
[2024-02-07 19:21:26,760 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 109 predicate places.
[2024-02-07 19:21:26,760 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 119 transitions, 1952 flow
[2024-02-07 19:21:26,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:26,760 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:26,761 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]
[2024-02-07 19:21:26,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:26,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2024-02-07 19:21:26,979 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:26,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:26,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1367021585, now seen corresponding path program 11 times
[2024-02-07 19:21:26,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:26,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676545500]
[2024-02-07 19:21:26,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:26,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:27,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:27,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676545500]
[2024-02-07 19:21:27,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676545500] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:27,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127619483]
[2024-02-07 19:21:27,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-02-07 19:21:27,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:27,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:27,100 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:27,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-02-07 19:21:27,171 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-02-07 19:21:27,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:27,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:27,174 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:27,293 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:27,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127619483] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:27,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:27,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:27,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324602766]
[2024-02-07 19:21:27,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:27,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:27,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:27,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:27,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:27,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:27,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 119 transitions, 1952 flow. Second operand has 23 states, 23 states have (on average 7.130434782608695) internal successors, (164), 23 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:27,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:27,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:27,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:28,189 INFO L124 PetriNetUnfolderBase]: 455/889 cut-off events.
[2024-02-07 19:21:28,189 INFO L125 PetriNetUnfolderBase]: For 6309/6309 co-relation queries the response was YES.
[2024-02-07 19:21:28,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5691 conditions, 889 events. 455/889 cut-off events. For 6309/6309 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4396 event pairs, 11 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 5660. Up to 184 conditions per place.
[2024-02-07 19:21:28,194 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 65 selfloop transitions, 116 changer transitions 45/228 dead transitions.
[2024-02-07 19:21:28,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 228 transitions, 3499 flow
[2024-02-07 19:21:28,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2024-02-07 19:21:28,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2024-02-07 19:21:28,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 271 transitions.
[2024-02-07 19:21:28,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2867724867724868
[2024-02-07 19:21:28,196 INFO L175 Difference]: Start difference. First operand has 146 places, 119 transitions, 1952 flow. Second operand 27 states and 271 transitions.
[2024-02-07 19:21:28,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 228 transitions, 3499 flow
[2024-02-07 19:21:28,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 228 transitions, 3240 flow, removed 2 selfloop flow, removed 13 redundant places.
[2024-02-07 19:21:28,214 INFO L231 Difference]: Finished difference. Result has 161 places, 140 transitions, 2331 flow
[2024-02-07 19:21:28,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2331, PETRI_PLACES=161, PETRI_TRANSITIONS=140}
[2024-02-07 19:21:28,215 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 124 predicate places.
[2024-02-07 19:21:28,215 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 140 transitions, 2331 flow
[2024-02-07 19:21:28,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.130434782608695) internal successors, (164), 23 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:28,215 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:28,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:28,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:28,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:28,426 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:28,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:28,426 INFO L85 PathProgramCache]: Analyzing trace with hash -652582511, now seen corresponding path program 12 times
[2024-02-07 19:21:28,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:28,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026134916]
[2024-02-07 19:21:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:28,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:28,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:28,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026134916]
[2024-02-07 19:21:28,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026134916] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:28,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132318617]
[2024-02-07 19:21:28,540 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-02-07 19:21:28,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:28,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:28,542 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:28,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-02-07 19:21:28,618 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2024-02-07 19:21:28,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:28,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 11 conjunts are in the unsatisfiable core
[2024-02-07 19:21:28,620 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:28,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-02-07 19:21:28,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132318617] provided 1 perfect and 0 imperfect interpolant sequences
[2024-02-07 19:21:28,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-02-07 19:21:28,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15
[2024-02-07 19:21:28,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511067683]
[2024-02-07 19:21:28,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-02-07 19:21:28,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-02-07 19:21:28,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:28,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-02-07 19:21:28,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240
[2024-02-07 19:21:28,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:28,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 140 transitions, 2331 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:28,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:28,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:28,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:28,871 INFO L124 PetriNetUnfolderBase]: 393/795 cut-off events.
[2024-02-07 19:21:28,871 INFO L125 PetriNetUnfolderBase]: For 5036/5036 co-relation queries the response was YES.
[2024-02-07 19:21:28,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5151 conditions, 795 events. 393/795 cut-off events. For 5036/5036 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3903 event pairs, 52 based on Foata normal form. 2/797 useless extension candidates. Maximal degree in co-relation 5118. Up to 250 conditions per place.
[2024-02-07 19:21:28,874 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 96 selfloop transitions, 44 changer transitions 32/174 dead transitions.
[2024-02-07 19:21:28,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 174 transitions, 3048 flow
[2024-02-07 19:21:28,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-02-07 19:21:28,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-02-07 19:21:28,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions.
[2024-02-07 19:21:28,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144
[2024-02-07 19:21:28,875 INFO L175 Difference]: Start difference. First operand has 161 places, 140 transitions, 2331 flow. Second operand 8 states and 104 transitions.
[2024-02-07 19:21:28,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 174 transitions, 3048 flow
[2024-02-07 19:21:28,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 174 transitions, 2856 flow, removed 28 selfloop flow, removed 9 redundant places.
[2024-02-07 19:21:28,898 INFO L231 Difference]: Finished difference. Result has 156 places, 132 transitions, 2207 flow
[2024-02-07 19:21:28,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2176, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2207, PETRI_PLACES=156, PETRI_TRANSITIONS=132}
[2024-02-07 19:21:28,898 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 119 predicate places.
[2024-02-07 19:21:28,898 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 132 transitions, 2207 flow
[2024-02-07 19:21:28,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:28,899 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:28,899 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]
[2024-02-07 19:21:28,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:29,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41
[2024-02-07 19:21:29,107 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:29,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:29,107 INFO L85 PathProgramCache]: Analyzing trace with hash 576300253, now seen corresponding path program 13 times
[2024-02-07 19:21:29,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:29,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020242125]
[2024-02-07 19:21:29,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:29,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:29,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:29,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:29,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020242125]
[2024-02-07 19:21:29,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020242125] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:29,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74181789]
[2024-02-07 19:21:29,215 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-02-07 19:21:29,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:29,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:29,220 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:29,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-02-07 19:21:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:29,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:29,286 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:29,395 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:29,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74181789] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:29,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:29,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86461570]
[2024-02-07 19:21:29,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:29,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:29,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:29,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:29,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:29,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 132 transitions, 2207 flow. Second operand has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:29,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:29,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:29,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:29,968 INFO L124 PetriNetUnfolderBase]: 352/714 cut-off events.
[2024-02-07 19:21:29,968 INFO L125 PetriNetUnfolderBase]: For 4556/4556 co-relation queries the response was YES.
[2024-02-07 19:21:29,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4590 conditions, 714 events. 352/714 cut-off events. For 4556/4556 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3403 event pairs, 23 based on Foata normal form. 1/715 useless extension candidates. Maximal degree in co-relation 4558. Up to 182 conditions per place.
[2024-02-07 19:21:29,973 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 46 selfloop transitions, 84 changer transitions 33/165 dead transitions.
[2024-02-07 19:21:29,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 165 transitions, 2684 flow
[2024-02-07 19:21:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-02-07 19:21:29,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2024-02-07 19:21:29,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 147 transitions.
[2024-02-07 19:21:29,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28
[2024-02-07 19:21:29,974 INFO L175 Difference]: Start difference. First operand has 156 places, 132 transitions, 2207 flow. Second operand 15 states and 147 transitions.
[2024-02-07 19:21:29,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 165 transitions, 2684 flow
[2024-02-07 19:21:29,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 165 transitions, 2604 flow, removed 11 selfloop flow, removed 5 redundant places.
[2024-02-07 19:21:29,990 INFO L231 Difference]: Finished difference. Result has 165 places, 116 transitions, 2001 flow
[2024-02-07 19:21:29,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2001, PETRI_PLACES=165, PETRI_TRANSITIONS=116}
[2024-02-07 19:21:29,991 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 128 predicate places.
[2024-02-07 19:21:29,991 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 116 transitions, 2001 flow
[2024-02-07 19:21:29,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:29,991 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:29,992 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]
[2024-02-07 19:21:30,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-02-07 19:21:30,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:30,193 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:30,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:30,194 INFO L85 PathProgramCache]: Analyzing trace with hash -612755665, now seen corresponding path program 14 times
[2024-02-07 19:21:30,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:30,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694248809]
[2024-02-07 19:21:30,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:30,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:30,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:30,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694248809]
[2024-02-07 19:21:30,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694248809] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:30,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956640462]
[2024-02-07 19:21:30,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-02-07 19:21:30,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:30,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:30,328 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:30,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-02-07 19:21:30,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-02-07 19:21:30,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:30,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:30,408 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:30,514 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:30,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956640462] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:30,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:30,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:30,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281176675]
[2024-02-07 19:21:30,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:30,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:30,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:30,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:30,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:30,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:30,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 116 transitions, 2001 flow. Second operand has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:30,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:30,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:30,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:31,329 INFO L124 PetriNetUnfolderBase]: 402/822 cut-off events.
[2024-02-07 19:21:31,330 INFO L125 PetriNetUnfolderBase]: For 6133/6133 co-relation queries the response was YES.
[2024-02-07 19:21:31,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5705 conditions, 822 events. 402/822 cut-off events. For 6133/6133 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4128 event pairs, 27 based on Foata normal form. 2/824 useless extension candidates. Maximal degree in co-relation 5673. Up to 194 conditions per place.
[2024-02-07 19:21:31,333 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 77 selfloop transitions, 101 changer transitions 51/231 dead transitions.
[2024-02-07 19:21:31,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 231 transitions, 4085 flow
[2024-02-07 19:21:31,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-02-07 19:21:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2024-02-07 19:21:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 227 transitions.
[2024-02-07 19:21:31,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2948051948051948
[2024-02-07 19:21:31,335 INFO L175 Difference]: Start difference. First operand has 165 places, 116 transitions, 2001 flow. Second operand 22 states and 227 transitions.
[2024-02-07 19:21:31,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 231 transitions, 4085 flow
[2024-02-07 19:21:31,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 231 transitions, 3731 flow, removed 2 selfloop flow, removed 15 redundant places.
[2024-02-07 19:21:31,354 INFO L231 Difference]: Finished difference. Result has 173 places, 149 transitions, 2730 flow
[2024-02-07 19:21:31,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2730, PETRI_PLACES=173, PETRI_TRANSITIONS=149}
[2024-02-07 19:21:31,355 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 136 predicate places.
[2024-02-07 19:21:31,355 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 149 transitions, 2730 flow
[2024-02-07 19:21:31,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.173913043478261) internal successors, (165), 23 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:31,355 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:31,355 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]
[2024-02-07 19:21:31,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:31,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:31,556 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:31,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:31,556 INFO L85 PathProgramCache]: Analyzing trace with hash 908099213, now seen corresponding path program 15 times
[2024-02-07 19:21:31,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:31,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056417396]
[2024-02-07 19:21:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:31,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:31,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:31,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056417396]
[2024-02-07 19:21:31,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056417396] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:31,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709373106]
[2024-02-07 19:21:31,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-02-07 19:21:31,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:31,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:31,678 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:31,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-02-07 19:21:31,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-02-07 19:21:31,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:31,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:31,744 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:31,846 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:31,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709373106] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:31,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:31,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:31,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331289458]
[2024-02-07 19:21:31,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:31,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:31,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:31,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:31,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:32,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:32,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 149 transitions, 2730 flow. Second operand has 23 states, 23 states have (on average 7.130434782608695) internal successors, (164), 23 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:32,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:32,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:32,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:32,404 INFO L124 PetriNetUnfolderBase]: 333/675 cut-off events.
[2024-02-07 19:21:32,404 INFO L125 PetriNetUnfolderBase]: For 4783/4783 co-relation queries the response was YES.
[2024-02-07 19:21:32,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4775 conditions, 675 events. 333/675 cut-off events. For 4783/4783 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3130 event pairs, 17 based on Foata normal form. 2/677 useless extension candidates. Maximal degree in co-relation 4740. Up to 150 conditions per place.
[2024-02-07 19:21:32,408 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 44 selfloop transitions, 73 changer transitions 69/188 dead transitions.
[2024-02-07 19:21:32,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 188 transitions, 3234 flow
[2024-02-07 19:21:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2024-02-07 19:21:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2024-02-07 19:21:32,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 165 transitions.
[2024-02-07 19:21:32,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2773109243697479
[2024-02-07 19:21:32,417 INFO L175 Difference]: Start difference. First operand has 173 places, 149 transitions, 2730 flow. Second operand 17 states and 165 transitions.
[2024-02-07 19:21:32,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 188 transitions, 3234 flow
[2024-02-07 19:21:32,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 188 transitions, 3042 flow, removed 13 selfloop flow, removed 14 redundant places.
[2024-02-07 19:21:32,437 INFO L231 Difference]: Finished difference. Result has 175 places, 95 transitions, 1584 flow
[2024-02-07 19:21:32,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2542, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1584, PETRI_PLACES=175, PETRI_TRANSITIONS=95}
[2024-02-07 19:21:32,438 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 138 predicate places.
[2024-02-07 19:21:32,438 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 95 transitions, 1584 flow
[2024-02-07 19:21:32,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.130434782608695) internal successors, (164), 23 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:32,438 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:32,439 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]
[2024-02-07 19:21:32,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:32,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44
[2024-02-07 19:21:32,639 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:32,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:32,640 INFO L85 PathProgramCache]: Analyzing trace with hash -62541009, now seen corresponding path program 16 times
[2024-02-07 19:21:32,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:32,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698678104]
[2024-02-07 19:21:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:32,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:32,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:32,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698678104]
[2024-02-07 19:21:32,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698678104] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:32,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118074235]
[2024-02-07 19:21:32,782 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-02-07 19:21:32,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:32,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:32,783 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:32,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-02-07 19:21:32,851 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-02-07 19:21:32,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:32,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core
[2024-02-07 19:21:32,852 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:32,942 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:33,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118074235] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:33,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:33,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2024-02-07 19:21:33,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756328112]
[2024-02-07 19:21:33,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:33,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-02-07 19:21:33,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:33,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-02-07 19:21:33,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506
[2024-02-07 19:21:33,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:33,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 95 transitions, 1584 flow. Second operand has 23 states, 23 states have (on average 7.130434782608695) internal successors, (164), 23 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:33,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:33,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:33,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:33,437 INFO L124 PetriNetUnfolderBase]: 176/382 cut-off events.
[2024-02-07 19:21:33,437 INFO L125 PetriNetUnfolderBase]: For 2084/2084 co-relation queries the response was YES.
[2024-02-07 19:21:33,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2602 conditions, 382 events. 176/382 cut-off events. For 2084/2084 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1500 event pairs, 3 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 2571. Up to 89 conditions per place.
[2024-02-07 19:21:33,440 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 27 selfloop transitions, 60 changer transitions 30/119 dead transitions.
[2024-02-07 19:21:33,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 119 transitions, 1869 flow
[2024-02-07 19:21:33,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-02-07 19:21:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2024-02-07 19:21:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 138 transitions.
[2024-02-07 19:21:33,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26285714285714284
[2024-02-07 19:21:33,441 INFO L175 Difference]: Start difference. First operand has 175 places, 95 transitions, 1584 flow. Second operand 15 states and 138 transitions.
[2024-02-07 19:21:33,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 119 transitions, 1869 flow
[2024-02-07 19:21:33,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 119 transitions, 1409 flow, removed 8 selfloop flow, removed 38 redundant places.
[2024-02-07 19:21:33,450 INFO L231 Difference]: Finished difference. Result has 143 places, 79 transitions, 1083 flow
[2024-02-07 19:21:33,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1083, PETRI_PLACES=143, PETRI_TRANSITIONS=79}
[2024-02-07 19:21:33,450 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 106 predicate places.
[2024-02-07 19:21:33,450 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 79 transitions, 1083 flow
[2024-02-07 19:21:33,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.130434782608695) internal successors, (164), 23 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:33,451 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:33,451 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:33,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:33,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:33,660 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:33,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:33,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1176752266, now seen corresponding path program 17 times
[2024-02-07 19:21:33,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:33,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804107410]
[2024-02-07 19:21:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:33,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:33,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804107410]
[2024-02-07 19:21:33,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804107410] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:33,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966772849]
[2024-02-07 19:21:33,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-02-07 19:21:33,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:33,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:33,707 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:33,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-02-07 19:21:33,785 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2024-02-07 19:21:33,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:33,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core
[2024-02-07 19:21:33,787 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:33,800 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:33,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966772849] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:33,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:33,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11
[2024-02-07 19:21:33,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997138391]
[2024-02-07 19:21:33,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:33,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-02-07 19:21:33,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:33,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-02-07 19:21:33,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2024-02-07 19:21:33,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35
[2024-02-07 19:21:33,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 79 transitions, 1083 flow. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:33,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:33,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35
[2024-02-07 19:21:33,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:34,000 INFO L124 PetriNetUnfolderBase]: 128/300 cut-off events.
[2024-02-07 19:21:34,001 INFO L125 PetriNetUnfolderBase]: For 866/866 co-relation queries the response was YES.
[2024-02-07 19:21:34,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1820 conditions, 300 events. 128/300 cut-off events. For 866/866 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1062 event pairs, 37 based on Foata normal form. 12/312 useless extension candidates. Maximal degree in co-relation 1798. Up to 94 conditions per place.
[2024-02-07 19:21:34,002 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 47 selfloop transitions, 36 changer transitions 19/104 dead transitions.
[2024-02-07 19:21:34,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 104 transitions, 1462 flow
[2024-02-07 19:21:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-02-07 19:21:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2024-02-07 19:21:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 142 transitions.
[2024-02-07 19:21:34,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2897959183673469
[2024-02-07 19:21:34,003 INFO L175 Difference]: Start difference. First operand has 143 places, 79 transitions, 1083 flow. Second operand 14 states and 142 transitions.
[2024-02-07 19:21:34,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 104 transitions, 1462 flow
[2024-02-07 19:21:34,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 104 transitions, 1113 flow, removed 1 selfloop flow, removed 23 redundant places.
[2024-02-07 19:21:34,008 INFO L231 Difference]: Finished difference. Result has 117 places, 75 transitions, 792 flow
[2024-02-07 19:21:34,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=792, PETRI_PLACES=117, PETRI_TRANSITIONS=75}
[2024-02-07 19:21:34,008 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 80 predicate places.
[2024-02-07 19:21:34,008 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 75 transitions, 792 flow
[2024-02-07 19:21:34,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:34,009 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:34,009 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:34,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2024-02-07 19:21:34,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:34,209 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:34,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:34,209 INFO L85 PathProgramCache]: Analyzing trace with hash -187500553, now seen corresponding path program 18 times
[2024-02-07 19:21:34,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:34,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900771657]
[2024-02-07 19:21:34,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:34,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:34,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:34,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:34,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900771657]
[2024-02-07 19:21:34,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900771657] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:34,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711597789]
[2024-02-07 19:21:34,350 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-02-07 19:21:34,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:34,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:34,351 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:34,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2024-02-07 19:21:34,445 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2024-02-07 19:21:34,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-02-07 19:21:34,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core
[2024-02-07 19:21:34,447 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:34,577 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:34,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711597789] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:34,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:34,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 27
[2024-02-07 19:21:34,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782641037]
[2024-02-07 19:21:34,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:34,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2024-02-07 19:21:34,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:34,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2024-02-07 19:21:34,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756
[2024-02-07 19:21:34,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:34,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 75 transitions, 792 flow. Second operand has 28 states, 28 states have (on average 7.25) internal successors, (203), 28 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:34,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:34,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:34,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:35,614 INFO L124 PetriNetUnfolderBase]: 149/351 cut-off events.
[2024-02-07 19:21:35,614 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES.
[2024-02-07 19:21:35,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1715 conditions, 351 events. 149/351 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1322 event pairs, 5 based on Foata normal form. 7/358 useless extension candidates. Maximal degree in co-relation 1696. Up to 84 conditions per place.
[2024-02-07 19:21:35,615 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 24 selfloop transitions, 17 changer transitions 101/144 dead transitions.
[2024-02-07 19:21:35,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 144 transitions, 1371 flow
[2024-02-07 19:21:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2024-02-07 19:21:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2024-02-07 19:21:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 288 transitions.
[2024-02-07 19:21:35,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23510204081632652
[2024-02-07 19:21:35,616 INFO L175 Difference]: Start difference. First operand has 117 places, 75 transitions, 792 flow. Second operand 35 states and 288 transitions.
[2024-02-07 19:21:35,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 144 transitions, 1371 flow
[2024-02-07 19:21:35,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 144 transitions, 1304 flow, removed 8 selfloop flow, removed 10 redundant places.
[2024-02-07 19:21:35,622 INFO L231 Difference]: Finished difference. Result has 142 places, 31 transitions, 245 flow
[2024-02-07 19:21:35,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=245, PETRI_PLACES=142, PETRI_TRANSITIONS=31}
[2024-02-07 19:21:35,622 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 105 predicate places.
[2024-02-07 19:21:35,622 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 31 transitions, 245 flow
[2024-02-07 19:21:35,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.25) internal successors, (203), 28 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:35,623 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-02-07 19:21:35,623 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-02-07 19:21:35,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:35,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:35,828 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] ===
[2024-02-07 19:21:35,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-02-07 19:21:35,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1705154697, now seen corresponding path program 19 times
[2024-02-07 19:21:35,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-02-07 19:21:35,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994405453]
[2024-02-07 19:21:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-02-07 19:21:35,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-02-07 19:21:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:35,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-02-07 19:21:35,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994405453]
[2024-02-07 19:21:35,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994405453] provided 0 perfect and 1 imperfect interpolant sequences
[2024-02-07 19:21:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770033598]
[2024-02-07 19:21:35,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-02-07 19:21:35,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-02-07 19:21:35,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-02-07 19:21:35,947 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-02-07 19:21:35,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2024-02-07 19:21:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-02-07 19:21:36,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core
[2024-02-07 19:21:36,015 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-02-07 19:21:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:36,162 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-02-07 19:21:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-02-07 19:21:36,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770033598] provided 0 perfect and 2 imperfect interpolant sequences
[2024-02-07 19:21:36,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-02-07 19:21:36,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28
[2024-02-07 19:21:36,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29506974]
[2024-02-07 19:21:36,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-02-07 19:21:36,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2024-02-07 19:21:36,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-02-07 19:21:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2024-02-07 19:21:36,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812
[2024-02-07 19:21:36,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35
[2024-02-07 19:21:36,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 31 transitions, 245 flow. Second operand has 29 states, 29 states have (on average 7.172413793103448) internal successors, (208), 29 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:36,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-02-07 19:21:36,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35
[2024-02-07 19:21:36,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-02-07 19:21:36,685 INFO L124 PetriNetUnfolderBase]: 36/92 cut-off events.
[2024-02-07 19:21:36,685 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES.
[2024-02-07 19:21:36,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 92 events. 36/92 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 0 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 415. Up to 25 conditions per place.
[2024-02-07 19:21:36,686 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions.
[2024-02-07 19:21:36,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 46 transitions, 365 flow
[2024-02-07 19:21:36,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-02-07 19:21:36,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2024-02-07 19:21:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 120 transitions.
[2024-02-07 19:21:36,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22857142857142856
[2024-02-07 19:21:36,686 INFO L175 Difference]: Start difference. First operand has 142 places, 31 transitions, 245 flow. Second operand 15 states and 120 transitions.
[2024-02-07 19:21:36,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 46 transitions, 365 flow
[2024-02-07 19:21:36,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 46 transitions, 220 flow, removed 6 selfloop flow, removed 42 redundant places.
[2024-02-07 19:21:36,688 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow
[2024-02-07 19:21:36,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0}
[2024-02-07 19:21:36,688 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 29 predicate places.
[2024-02-07 19:21:36,688 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow
[2024-02-07 19:21:36,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.172413793103448) internal successors, (208), 29 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-02-07 19:21:36,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 17 remaining)
[2024-02-07 19:21:36,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 17 remaining)
[2024-02-07 19:21:36,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 17 remaining)
[2024-02-07 19:21:36,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 17 remaining)
[2024-02-07 19:21:36,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 17 remaining)
[2024-02-07 19:21:36,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 17 remaining)
[2024-02-07 19:21:36,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 17 remaining)
[2024-02-07 19:21:36,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 17 remaining)
[2024-02-07 19:21:36,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (8 of 17 remaining)
[2024-02-07 19:21:36,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining)
[2024-02-07 19:21:36,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining)
[2024-02-07 19:21:36,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 17 remaining)
[2024-02-07 19:21:36,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 17 remaining)
[2024-02-07 19:21:36,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 17 remaining)
[2024-02-07 19:21:36,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 17 remaining)
[2024-02-07 19:21:36,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 17 remaining)
[2024-02-07 19:21:36,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 17 remaining)
[2024-02-07 19:21:36,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2024-02-07 19:21:36,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48
[2024-02-07 19:21:36,900 INFO L445 BasicCegarLoop]: Path program histogram: [19, 9, 6, 6, 2, 2, 1, 1, 1, 1, 1]
[2024-02-07 19:21:36,904 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2024-02-07 19:21:36,904 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2024-02-07 19:21:36,907 INFO L503 ceAbstractionStarter]: Automizer considered 8 witness invariants
[2024-02-07 19:21:36,908 INFO L504 ceAbstractionStarter]: WitnessConsidered=8
[2024-02-07 19:21:36,908 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 07:21:36 BasicIcfg
[2024-02-07 19:21:36,908 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-02-07 19:21:36,909 INFO L158 Benchmark]: Toolchain (without parser) took 36219.60ms. Allocated memory was 176.2MB in the beginning and 406.8MB in the end (delta: 230.7MB). Free memory was 104.5MB in the beginning and 304.4MB in the end (delta: -199.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB.
[2024-02-07 19:21:36,909 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-02-07 19:21:36,909 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 176.2MB. Free memory is still 107.4MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-02-07 19:21:36,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.37ms. Allocated memory is still 176.2MB. Free memory was 104.5MB in the beginning and 90.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2024-02-07 19:21:36,910 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.44ms. Allocated memory is still 176.2MB. Free memory was 90.3MB in the beginning and 88.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-02-07 19:21:36,910 INFO L158 Benchmark]: Boogie Preprocessor took 108.85ms. Allocated memory is still 176.2MB. Free memory was 88.7MB in the beginning and 147.6MB in the end (delta: -59.0MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB.
[2024-02-07 19:21:36,910 INFO L158 Benchmark]: RCFGBuilder took 463.77ms. Allocated memory is still 176.2MB. Free memory was 147.6MB in the beginning and 122.8MB in the end (delta: 24.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB.
[2024-02-07 19:21:36,911 INFO L158 Benchmark]: TraceAbstraction took 35310.72ms. Allocated memory was 176.2MB in the beginning and 406.8MB in the end (delta: 230.7MB). Free memory was 121.6MB in the beginning and 304.4MB in the end (delta: -182.8MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB.
[2024-02-07 19:21:36,912 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 16.1GB.
* Witness Parser took 0.18ms. Allocated memory is still 176.2MB. Free memory is still 107.4MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 299.37ms. Allocated memory is still 176.2MB. Free memory was 104.5MB in the beginning and 90.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 30.44ms. Allocated memory is still 176.2MB. Free memory was 90.3MB in the beginning and 88.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 108.85ms. Allocated memory is still 176.2MB. Free memory was 88.7MB in the beginning and 147.6MB in the end (delta: -59.0MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB.
* RCFGBuilder took 463.77ms. Allocated memory is still 176.2MB. Free memory was 147.6MB in the beginning and 122.8MB in the end (delta: 24.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB.
* TraceAbstraction took 35310.72ms. Allocated memory was 176.2MB in the beginning and 406.8MB in the end (delta: 230.7MB). Free memory was 121.6MB in the beginning and 304.4MB in the end (delta: -182.8MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 44]: invariant of correctness witness holds
For all program executions holds that invariant of correctness witness holds at this location
- PositiveResult [Line: 47]: invariant of correctness witness holds
For all program executions holds that invariant of correctness witness holds at this location
- PositiveResult [Line: 48]: invariant of correctness witness holds
For all program executions holds that invariant of correctness witness holds at this location
- PositiveResult [Line: 57]: invariant of correctness witness holds
For all program executions holds that invariant of correctness witness holds at this location
- PositiveResult [Line: 60]: invariant of correctness witness holds
For all program executions holds that invariant of correctness witness holds at this location
- PositiveResult [Line: 61]: invariant of correctness witness holds
For all program executions holds that invariant of correctness witness holds at this location
- PositiveResult [Line: 69]: invariant of correctness witness holds
For all program executions holds that invariant of correctness witness holds at this location
- PositiveResult [Line: 78]: invariant of correctness witness holds
For all program executions holds that invariant of correctness witness holds at this location
- PositiveResult [Line: 79]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 54 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 35.2s, OverallIterations: 49, TraceHistogramMax: 2, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 19.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3970 SdHoareTripleChecker+Valid, 9.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3771 mSDsluCounter, 808 SdHoareTripleChecker+Invalid, 7.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 702 mSDsCounter, 866 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19878 IncrementalHoareTripleChecker+Invalid, 20744 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 866 mSolverCounterUnsat, 106 mSDtfsCounter, 19878 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1651 GetRequests, 772 SyntacticMatches, 19 SemanticMatches, 860 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7295 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7511occurred in iteration=34, InterpolantAutomatonStates: 608, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 1472 NumberOfCodeBlocks, 1472 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 1848 ConstructedInterpolants, 0 QuantifiedInterpolants, 9529 SizeOfPredicates, 72 NumberOfNonLiveVariables, 2896 ConjunctsInSsa, 228 ConjunctsInUnsatCore, 88 InterpolantComputations, 31 PerfectInterpolantSequences, 28/171 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
9 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2024-02-07 19:21:36,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE