./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/46_monabsex2_vs.yml/witness.yml --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 80b1b132
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/46_monabsex2_vs.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-?-80b1b13-m
[2024-01-31 16:43:24,115 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-01-31 16:43:24,179 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-01-31 16:43:24,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-01-31 16:43:24,186 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-01-31 16:43:24,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-01-31 16:43:24,211 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-01-31 16:43:24,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-01-31 16:43:24,212 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-01-31 16:43:24,215 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-01-31 16:43:24,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-01-31 16:43:24,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-01-31 16:43:24,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-01-31 16:43:24,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-01-31 16:43:24,218 INFO L153 SettingsManager]: * Use SBE=true
[2024-01-31 16:43:24,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-01-31 16:43:24,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-01-31 16:43:24,219 INFO L153 SettingsManager]: * sizeof long=4
[2024-01-31 16:43:24,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-01-31 16:43:24,219 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-01-31 16:43:24,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-01-31 16:43:24,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-01-31 16:43:24,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-01-31 16:43:24,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-01-31 16:43:24,220 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-01-31 16:43:24,221 INFO L153 SettingsManager]: * sizeof long double=12
[2024-01-31 16:43:24,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-01-31 16:43:24,221 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-01-31 16:43:24,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-01-31 16:43:24,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-01-31 16:43:24,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-01-31 16:43:24,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-01-31 16:43:24,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-01-31 16:43:24,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-01-31 16:43:24,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-01-31 16:43:24,224 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-01-31 16:43:24,224 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-01-31 16:43:24,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-01-31 16:43:24,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-01-31 16:43:24,225 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-01-31 16:43:24,225 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2024-01-31 16:43:24,225 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-01-31 16:43:24,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-01-31 16:43:24,226 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false
[2024-01-31 16:43:24,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-01-31 16:43:24,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-01-31 16:43:24,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-01-31 16:43:24,478 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-01-31 16:43:24,478 INFO L274 PluginConnector]: CDTParser initialized
[2024-01-31 16:43:24,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i
[2024-01-31 16:43:25,617 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-01-31 16:43:25,814 INFO L384 CDTParser]: Found 1 translation units.
[2024-01-31 16:43:25,815 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i
[2024-01-31 16:43:25,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f2948c9/7c468e97398444048e45ee4352defc54/FLAGfb4f734a8
[2024-01-31 16:43:25,837 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f2948c9/7c468e97398444048e45ee4352defc54
[2024-01-31 16:43:25,839 INFO L270 PluginConnector]: Initializing Witness Parser...
[2024-01-31 16:43:25,839 INFO L274 PluginConnector]: Witness Parser initialized
[2024-01-31 16:43:25,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/46_monabsex2_vs.yml/witness.yml
[2024-01-31 16:43:25,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-01-31 16:43:25,965 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements.
[2024-01-31 16:43:25,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-01-31 16:43:26,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-01-31 16:43:26,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-01-31 16:43:26,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:43:25" (1/2) ...
[2024-01-31 16:43:26,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf6963b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:26, skipping insertion in model container
[2024-01-31 16:43:26,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:43:25" (1/2) ...
[2024-01-31 16:43:26,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2f6eed93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:26, skipping insertion in model container
[2024-01-31 16:43:26,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:25" (2/2) ...
[2024-01-31 16:43:26,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf6963b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:26, skipping insertion in model container
[2024-01-31 16:43:26,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:25" (2/2) ...
[2024-01-31 16:43:26,017 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness
[2024-01-31 16:43:26,061 INFO L96 nessWitnessExtractor]: Found the following entries in the witness:
[2024-01-31 16:43:26,062 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] ((s == (_Bool)0) && (l == (_Bool)1)) && ((unsigned long )arg == 0UL)
[2024-01-31 16:43:26,101 INFO L179 MainTranslator]: Built tables and reachable declarations
[2024-01-31 16:43:26,340 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i[30494,30507]
[2024-01-31 16:43:26,346 INFO L209 PostProcessor]: Analyzing one entry point: main
[2024-01-31 16:43:26,363 INFO L204 MainTranslator]: Completed pre-run
[2024-01-31 16:43:26,394 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i[30494,30507]
Start Parsing Local
[2024-01-31 16:43:26,422 INFO L209 PostProcessor]: Analyzing one entry point: main
[2024-01-31 16:43:26,447 INFO L208 MainTranslator]: Completed translation
[2024-01-31 16:43:26,447 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:26 WrapperNode
[2024-01-31 16:43:26,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-01-31 16:43:26,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-01-31 16:43:26,448 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-01-31 16:43:26,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-01-31 16:43:26,454 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 31.01 04:43:26" (1/1) ...
[2024-01-31 16:43:26,462 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 31.01 04:43:26" (1/1) ...
[2024-01-31 16:43:26,475 INFO L138 Inliner]: procedures = 169, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21
[2024-01-31 16:43:26,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-01-31 16:43:26,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-01-31 16:43:26,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-01-31 16:43:26,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-01-31 16:43:26,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:26" (1/1) ...
[2024-01-31 16:43:26,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:26" (1/1) ...
[2024-01-31 16:43:26,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:26" (1/1) ...
[2024-01-31 16:43:26,495 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1].
[2024-01-31 16:43:26,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:26" (1/1) ...
[2024-01-31 16:43:26,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:26" (1/1) ...
[2024-01-31 16:43:26,499 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:26" (1/1) ...
[2024-01-31 16:43:26,502 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:26" (1/1) ...
[2024-01-31 16:43:26,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:26" (1/1) ...
[2024-01-31 16:43:26,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:26" (1/1) ...
[2024-01-31 16:43:26,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-01-31 16:43:26,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-01-31 16:43:26,505 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-01-31 16:43:26,506 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-01-31 16:43:26,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:26" (1/1) ...
[2024-01-31 16:43:26,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-01-31 16:43:26,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-01-31 16:43:26,558 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)
[2024-01-31 16:43:26,603 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
[2024-01-31 16:43:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure thr1
[2024-01-31 16:43:26,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1
[2024-01-31 16:43:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-01-31 16:43:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-01-31 16:43:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2024-01-31 16:43:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-01-31 16:43:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-01-31 16:43:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-01-31 16:43:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-01-31 16:43:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-01-31 16:43:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2024-01-31 16:43:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-01-31 16:43:26,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-01-31 16:43:26,640 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2024-01-31 16:43:26,762 INFO L244 CfgBuilder]: Building ICFG
[2024-01-31 16:43:26,764 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-01-31 16:43:26,842 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program.
[2024-01-31 16:43:26,843 INFO L293 CfgBuilder]: Performing block encoding
[2024-01-31 16:43:26,893 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-01-31 16:43:26,893 INFO L320 CfgBuilder]: Removed 1 assume(true) statements.
[2024-01-31 16:43:26,893 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:43:26 BoogieIcfgContainer
[2024-01-31 16:43:26,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-01-31 16:43:26,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-01-31 16:43:26,895 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-01-31 16:43:26,897 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-01-31 16:43:26,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:43:25" (1/4) ...
[2024-01-31 16:43:26,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcaa1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:43:26, skipping insertion in model container
[2024-01-31 16:43:26,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:25" (2/4) ...
[2024-01-31 16:43:26,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcaa1a3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:43:26, skipping insertion in model container
[2024-01-31 16:43:26,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:26" (3/4) ...
[2024-01-31 16:43:26,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcaa1a3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:43:26, skipping insertion in model container
[2024-01-31 16:43:26,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:43:26" (4/4) ...
[2024-01-31 16:43:26,900 INFO L112 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i
[2024-01-31 16:43:26,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-01-31 16:43:26,913 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2024-01-31 16:43:26,914 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-01-31 16:43:26,938 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-01-31 16:43:26,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 15 places, 12 transitions, 28 flow
[2024-01-31 16:43:26,979 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events.
[2024-01-31 16:43:26,980 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-01-31 16:43:26,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 14 events. 0/14 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 18 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place.
[2024-01-31 16:43:26,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 15 places, 12 transitions, 28 flow
[2024-01-31 16:43:26,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 15 places, 12 transitions, 28 flow
[2024-01-31 16:43:26,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-01-31 16:43:26,999 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;@d85fef3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-01-31 16:43:26,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2024-01-31 16:43:27,003 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-01-31 16:43:27,003 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events.
[2024-01-31 16:43:27,003 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-01-31 16:43:27,003 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-01-31 16:43:27,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2024-01-31 16:43:27,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2024-01-31 16:43:27,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-01-31 16:43:27,008 INFO L85 PathProgramCache]: Analyzing trace with hash 113605734, now seen corresponding path program 1 times
[2024-01-31 16:43:27,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-01-31 16:43:27,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591402740]
[2024-01-31 16:43:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-01-31 16:43:27,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-01-31 16:43:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-01-31 16:43:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-01-31 16:43:27,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-01-31 16:43:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591402740]
[2024-01-31 16:43:27,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591402740] provided 1 perfect and 0 imperfect interpolant sequences
[2024-01-31 16:43:27,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-01-31 16:43:27,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-01-31 16:43:27,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956397258]
[2024-01-31 16:43:27,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-01-31 16:43:27,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-01-31 16:43:27,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-01-31 16:43:27,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-01-31 16:43:27,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-01-31 16:43:27,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 12
[2024-01-31 16:43:27,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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)
[2024-01-31 16:43:27,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-01-31 16:43:27,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 12
[2024-01-31 16:43:27,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-01-31 16:43:27,320 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events.
[2024-01-31 16:43:27,321 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-01-31 16:43:27,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 17 events. 3/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 1 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 22. Up to 7 conditions per place.
[2024-01-31 16:43:27,323 INFO L140 encePairwiseOnDemand]: 7/12 looper letters, 5 selfloop transitions, 2 changer transitions 0/10 dead transitions.
[2024-01-31 16:43:27,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 10 transitions, 38 flow
[2024-01-31 16:43:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-01-31 16:43:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-01-31 16:43:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions.
[2024-01-31 16:43:27,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556
[2024-01-31 16:43:27,334 INFO L175 Difference]: Start difference. First operand has 15 places, 12 transitions, 28 flow. Second operand 3 states and 20 transitions.
[2024-01-31 16:43:27,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 10 transitions, 38 flow
[2024-01-31 16:43:27,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 38 flow, removed 0 selfloop flow, removed 0 redundant places.
[2024-01-31 16:43:27,337 INFO L231 Difference]: Finished difference. Result has 14 places, 9 transitions, 26 flow
[2024-01-31 16:43:27,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=12, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=14, PETRI_TRANSITIONS=9}
[2024-01-31 16:43:27,341 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places.
[2024-01-31 16:43:27,342 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 9 transitions, 26 flow
[2024-01-31 16:43:27,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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)
[2024-01-31 16:43:27,342 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-01-31 16:43:27,342 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1]
[2024-01-31 16:43:27,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-01-31 16:43:27,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2024-01-31 16:43:27,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-01-31 16:43:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash 113605585, now seen corresponding path program 1 times
[2024-01-31 16:43:27,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-01-31 16:43:27,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804440350]
[2024-01-31 16:43:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-01-31 16:43:27,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-01-31 16:43:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-01-31 16:43:27,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-01-31 16:43:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-01-31 16:43:27,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-01-31 16:43:27,382 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2024-01-31 16:43:27,383 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining)
[2024-01-31 16:43:27,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining)
[2024-01-31 16:43:27,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining)
[2024-01-31 16:43:27,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 5 remaining)
[2024-01-31 16:43:27,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining)
[2024-01-31 16:43:27,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-01-31 16:43:27,386 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1]
[2024-01-31 16:43:27,388 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2024-01-31 16:43:27,388 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2024-01-31 16:43:27,402 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-01-31 16:43:27,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 50 flow
[2024-01-31 16:43:27,408 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events.
[2024-01-31 16:43:27,408 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-01-31 16:43:27,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 24 events. 0/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 49 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place.
[2024-01-31 16:43:27,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 50 flow
[2024-01-31 16:43:27,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 50 flow
[2024-01-31 16:43:27,410 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-01-31 16:43:27,411 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;@d85fef3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-01-31 16:43:27,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations.
[2024-01-31 16:43:27,413 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-01-31 16:43:27,413 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events.
[2024-01-31 16:43:27,414 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2024-01-31 16:43:27,414 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-01-31 16:43:27,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2024-01-31 16:43:27,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-01-31 16:43:27,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-01-31 16:43:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash 132698785, now seen corresponding path program 1 times
[2024-01-31 16:43:27,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-01-31 16:43:27,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111820320]
[2024-01-31 16:43:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-01-31 16:43:27,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-01-31 16:43:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-01-31 16:43:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-01-31 16:43:27,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-01-31 16:43:27,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111820320]
[2024-01-31 16:43:27,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111820320] provided 1 perfect and 0 imperfect interpolant sequences
[2024-01-31 16:43:27,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-01-31 16:43:27,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-01-31 16:43:27,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055538497]
[2024-01-31 16:43:27,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-01-31 16:43:27,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-01-31 16:43:27,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-01-31 16:43:27,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-01-31 16:43:27,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-01-31 16:43:27,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20
[2024-01-31 16:43:27,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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)
[2024-01-31 16:43:27,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-01-31 16:43:27,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20
[2024-01-31 16:43:27,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-01-31 16:43:27,566 INFO L124 PetriNetUnfolderBase]: 55/123 cut-off events.
[2024-01-31 16:43:27,567 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES.
[2024-01-31 16:43:27,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 123 events. 55/123 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 450 event pairs, 19 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 127. Up to 93 conditions per place.
[2024-01-31 16:43:27,569 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 17 selfloop transitions, 3 changer transitions 0/25 dead transitions.
[2024-01-31 16:43:27,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 25 transitions, 105 flow
[2024-01-31 16:43:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-01-31 16:43:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-01-31 16:43:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions.
[2024-01-31 16:43:27,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333
[2024-01-31 16:43:27,570 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 50 flow. Second operand 3 states and 41 transitions.
[2024-01-31 16:43:27,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 25 transitions, 105 flow
[2024-01-31 16:43:27,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 105 flow, removed 0 selfloop flow, removed 0 redundant places.
[2024-01-31 16:43:27,572 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 73 flow
[2024-01-31 16:43:27,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=27, PETRI_TRANSITIONS=21}
[2024-01-31 16:43:27,573 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places.
[2024-01-31 16:43:27,573 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 73 flow
[2024-01-31 16:43:27,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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)
[2024-01-31 16:43:27,573 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-01-31 16:43:27,573 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1]
[2024-01-31 16:43:27,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-01-31 16:43:27,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-01-31 16:43:27,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-01-31 16:43:27,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1325832760, now seen corresponding path program 1 times
[2024-01-31 16:43:27,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-01-31 16:43:27,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149370565]
[2024-01-31 16:43:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-01-31 16:43:27,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-01-31 16:43:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-01-31 16:43:27,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-01-31 16:43:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-01-31 16:43:27,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-01-31 16:43:27,598 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2024-01-31 16:43:27,598 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining)
[2024-01-31 16:43:27,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining)
[2024-01-31 16:43:27,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining)
[2024-01-31 16:43:27,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining)
[2024-01-31 16:43:27,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining)
[2024-01-31 16:43:27,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 7 remaining)
[2024-01-31 16:43:27,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining)
[2024-01-31 16:43:27,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-01-31 16:43:27,600 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1]
[2024-01-31 16:43:27,600 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis
[2024-01-31 16:43:27,601 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances.
[2024-01-31 16:43:27,617 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-01-31 16:43:27,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 28 transitions, 74 flow
[2024-01-31 16:43:27,623 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events.
[2024-01-31 16:43:27,624 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES.
[2024-01-31 16:43:27,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 34 events. 0/34 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 81 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place.
[2024-01-31 16:43:27,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 28 transitions, 74 flow
[2024-01-31 16:43:27,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 28 transitions, 74 flow
[2024-01-31 16:43:27,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-01-31 16:43:27,626 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;@d85fef3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-01-31 16:43:27,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations.
[2024-01-31 16:43:27,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-01-31 16:43:27,629 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events.
[2024-01-31 16:43:27,629 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2024-01-31 16:43:27,629 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-01-31 16:43:27,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2024-01-31 16:43:27,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] ===
[2024-01-31 16:43:27,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-01-31 16:43:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash 159426052, now seen corresponding path program 1 times
[2024-01-31 16:43:27,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-01-31 16:43:27,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005619563]
[2024-01-31 16:43:27,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-01-31 16:43:27,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-01-31 16:43:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-01-31 16:43:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-01-31 16:43:27,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-01-31 16:43:27,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005619563]
[2024-01-31 16:43:27,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005619563] provided 1 perfect and 0 imperfect interpolant sequences
[2024-01-31 16:43:27,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-01-31 16:43:27,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-01-31 16:43:27,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417165779]
[2024-01-31 16:43:27,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-01-31 16:43:27,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-01-31 16:43:27,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-01-31 16:43:27,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-01-31 16:43:27,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-01-31 16:43:27,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28
[2024-01-31 16:43:27,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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)
[2024-01-31 16:43:27,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-01-31 16:43:27,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28
[2024-01-31 16:43:27,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-01-31 16:43:27,885 INFO L124 PetriNetUnfolderBase]: 663/1063 cut-off events.
[2024-01-31 16:43:27,886 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES.
[2024-01-31 16:43:27,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 1063 events. 663/1063 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 5367 event pairs, 279 based on Foata normal form. 0/793 useless extension candidates. Maximal degree in co-relation 552. Up to 985 conditions per place.
[2024-01-31 16:43:27,896 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 25 selfloop transitions, 4 changer transitions 0/36 dead transitions.
[2024-01-31 16:43:27,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 160 flow
[2024-01-31 16:43:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-01-31 16:43:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-01-31 16:43:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions.
[2024-01-31 16:43:27,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905
[2024-01-31 16:43:27,899 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 74 flow. Second operand 3 states and 58 transitions.
[2024-01-31 16:43:27,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 160 flow
[2024-01-31 16:43:27,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 156 flow, removed 2 selfloop flow, removed 0 redundant places.
[2024-01-31 16:43:27,904 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 106 flow
[2024-01-31 16:43:27,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=37, PETRI_TRANSITIONS=30}
[2024-01-31 16:43:27,906 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places.
[2024-01-31 16:43:27,906 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 106 flow
[2024-01-31 16:43:27,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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)
[2024-01-31 16:43:27,906 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-01-31 16:43:27,906 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1]
[2024-01-31 16:43:27,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-01-31 16:43:27,907 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] ===
[2024-01-31 16:43:27,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-01-31 16:43:27,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1502641302, now seen corresponding path program 1 times
[2024-01-31 16:43:27,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-01-31 16:43:27,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503759308]
[2024-01-31 16:43:27,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-01-31 16:43:27,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-01-31 16:43:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-01-31 16:43:27,938 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-01-31 16:43:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-01-31 16:43:27,957 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-01-31 16:43:27,961 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2024-01-31 16:43:27,962 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining)
[2024-01-31 16:43:27,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 9 remaining)
[2024-01-31 16:43:27,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining)
[2024-01-31 16:43:27,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 9 remaining)
[2024-01-31 16:43:27,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining)
[2024-01-31 16:43:27,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 9 remaining)
[2024-01-31 16:43:27,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining)
[2024-01-31 16:43:27,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 9 remaining)
[2024-01-31 16:43:27,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining)
[2024-01-31 16:43:27,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-01-31 16:43:27,963 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1]
[2024-01-31 16:43:27,964 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis
[2024-01-31 16:43:27,964 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances.
[2024-01-31 16:43:27,985 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-01-31 16:43:27,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 36 transitions, 100 flow
[2024-01-31 16:43:28,001 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events.
[2024-01-31 16:43:28,001 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES.
[2024-01-31 16:43:28,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 44 events. 0/44 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 114 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place.
[2024-01-31 16:43:28,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 36 transitions, 100 flow
[2024-01-31 16:43:28,002 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 36 transitions, 100 flow
[2024-01-31 16:43:28,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-01-31 16:43:28,009 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;@d85fef3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-01-31 16:43:28,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations.
[2024-01-31 16:43:28,011 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-01-31 16:43:28,011 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events.
[2024-01-31 16:43:28,012 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2024-01-31 16:43:28,012 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-01-31 16:43:28,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2024-01-31 16:43:28,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] ===
[2024-01-31 16:43:28,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-01-31 16:43:28,012 INFO L85 PathProgramCache]: Analyzing trace with hash 193787983, now seen corresponding path program 1 times
[2024-01-31 16:43:28,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-01-31 16:43:28,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757881132]
[2024-01-31 16:43:28,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-01-31 16:43:28,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-01-31 16:43:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-01-31 16:43:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-01-31 16:43:28,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-01-31 16:43:28,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757881132]
[2024-01-31 16:43:28,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757881132] provided 1 perfect and 0 imperfect interpolant sequences
[2024-01-31 16:43:28,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-01-31 16:43:28,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-01-31 16:43:28,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216793653]
[2024-01-31 16:43:28,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-01-31 16:43:28,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-01-31 16:43:28,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-01-31 16:43:28,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-01-31 16:43:28,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-01-31 16:43:28,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36
[2024-01-31 16:43:28,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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)
[2024-01-31 16:43:28,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-01-31 16:43:28,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36
[2024-01-31 16:43:28,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-01-31 16:43:28,894 INFO L124 PetriNetUnfolderBase]: 6487/9023 cut-off events.
[2024-01-31 16:43:28,895 INFO L125 PetriNetUnfolderBase]: For 1804/1804 co-relation queries the response was YES.
[2024-01-31 16:43:28,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18916 conditions, 9023 events. 6487/9023 cut-off events. For 1804/1804 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 50450 event pairs, 3167 based on Foata normal form. 0/6305 useless extension candidates. Maximal degree in co-relation 2241. Up to 8833 conditions per place.
[2024-01-31 16:43:28,955 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 33 selfloop transitions, 5 changer transitions 0/47 dead transitions.
[2024-01-31 16:43:28,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 219 flow
[2024-01-31 16:43:28,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-01-31 16:43:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-01-31 16:43:28,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions.
[2024-01-31 16:43:28,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444
[2024-01-31 16:43:28,958 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 100 flow. Second operand 3 states and 75 transitions.
[2024-01-31 16:43:28,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 219 flow
[2024-01-31 16:43:28,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 207 flow, removed 6 selfloop flow, removed 0 redundant places.
[2024-01-31 16:43:28,962 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 139 flow
[2024-01-31 16:43:28,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=47, PETRI_TRANSITIONS=39}
[2024-01-31 16:43:28,964 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places.
[2024-01-31 16:43:28,964 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 139 flow
[2024-01-31 16:43:28,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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)
[2024-01-31 16:43:28,964 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-01-31 16:43:28,964 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1]
[2024-01-31 16:43:28,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-01-31 16:43:28,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] ===
[2024-01-31 16:43:28,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-01-31 16:43:28,966 INFO L85 PathProgramCache]: Analyzing trace with hash 663957435, now seen corresponding path program 1 times
[2024-01-31 16:43:28,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-01-31 16:43:28,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618234073]
[2024-01-31 16:43:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-01-31 16:43:28,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-01-31 16:43:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-01-31 16:43:28,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-01-31 16:43:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-01-31 16:43:29,000 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-01-31 16:43:29,001 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2024-01-31 16:43:29,001 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining)
[2024-01-31 16:43:29,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 11 remaining)
[2024-01-31 16:43:29,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining)
[2024-01-31 16:43:29,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 11 remaining)
[2024-01-31 16:43:29,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining)
[2024-01-31 16:43:29,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 11 remaining)
[2024-01-31 16:43:29,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining)
[2024-01-31 16:43:29,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 11 remaining)
[2024-01-31 16:43:29,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining)
[2024-01-31 16:43:29,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 11 remaining)
[2024-01-31 16:43:29,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining)
[2024-01-31 16:43:29,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-01-31 16:43:29,006 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1]
[2024-01-31 16:43:29,007 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis
[2024-01-31 16:43:29,007 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances.
[2024-01-31 16:43:29,040 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-01-31 16:43:29,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 44 transitions, 128 flow
[2024-01-31 16:43:29,089 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events.
[2024-01-31 16:43:29,089 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES.
[2024-01-31 16:43:29,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 54 events. 0/54 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 148 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place.
[2024-01-31 16:43:29,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 44 transitions, 128 flow
[2024-01-31 16:43:29,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 44 transitions, 128 flow
[2024-01-31 16:43:29,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-01-31 16:43:29,091 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;@d85fef3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-01-31 16:43:29,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations.
[2024-01-31 16:43:29,092 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-01-31 16:43:29,092 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events.
[2024-01-31 16:43:29,092 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2024-01-31 16:43:29,092 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-01-31 16:43:29,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2024-01-31 16:43:29,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] ===
[2024-01-31 16:43:29,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-01-31 16:43:29,092 INFO L85 PathProgramCache]: Analyzing trace with hash 235783906, now seen corresponding path program 1 times
[2024-01-31 16:43:29,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-01-31 16:43:29,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204134844]
[2024-01-31 16:43:29,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-01-31 16:43:29,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-01-31 16:43:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-01-31 16:43:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-01-31 16:43:29,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-01-31 16:43:29,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204134844]
[2024-01-31 16:43:29,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204134844] provided 1 perfect and 0 imperfect interpolant sequences
[2024-01-31 16:43:29,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-01-31 16:43:29,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-01-31 16:43:29,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318830286]
[2024-01-31 16:43:29,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-01-31 16:43:29,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-01-31 16:43:29,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-01-31 16:43:29,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-01-31 16:43:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-01-31 16:43:29,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44
[2024-01-31 16:43:29,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-01-31 16:43:29,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-01-31 16:43:29,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44
[2024-01-31 16:43:29,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-01-31 16:43:33,740 INFO L124 PetriNetUnfolderBase]: 55639/71791 cut-off events.
[2024-01-31 16:43:33,740 INFO L125 PetriNetUnfolderBase]: For 17788/17788 co-relation queries the response was YES.
[2024-01-31 16:43:33,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150741 conditions, 71791 events. 55639/71791 cut-off events. For 17788/17788 co-relation queries the response was YES. Maximal size of possible extension queue 3919. Compared 419797 event pairs, 29935 based on Foata normal form. 0/48241 useless extension candidates. Maximal degree in co-relation 19097. Up to 71345 conditions per place.
[2024-01-31 16:43:34,162 INFO L140 encePairwiseOnDemand]: 27/44 looper letters, 41 selfloop transitions, 6 changer transitions 0/58 dead transitions.
[2024-01-31 16:43:34,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 282 flow
[2024-01-31 16:43:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-01-31 16:43:34,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-01-31 16:43:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions.
[2024-01-31 16:43:34,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696969696969697
[2024-01-31 16:43:34,164 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 128 flow. Second operand 3 states and 92 transitions.
[2024-01-31 16:43:34,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 282 flow
[2024-01-31 16:43:34,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 258 flow, removed 12 selfloop flow, removed 0 redundant places.
[2024-01-31 16:43:34,175 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 172 flow
[2024-01-31 16:43:34,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=57, PETRI_TRANSITIONS=48}
[2024-01-31 16:43:34,176 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places.
[2024-01-31 16:43:34,176 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 172 flow
[2024-01-31 16:43:34,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-01-31 16:43:34,176 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-01-31 16:43:34,176 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-01-31 16:43:34,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-01-31 16:43:34,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] ===
[2024-01-31 16:43:34,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-01-31 16:43:34,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1526058908, now seen corresponding path program 1 times
[2024-01-31 16:43:34,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-01-31 16:43:34,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392109588]
[2024-01-31 16:43:34,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-01-31 16:43:34,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-01-31 16:43:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-01-31 16:43:34,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-01-31 16:43:34,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-01-31 16:43:34,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392109588]
[2024-01-31 16:43:34,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392109588] provided 1 perfect and 0 imperfect interpolant sequences
[2024-01-31 16:43:34,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-01-31 16:43:34,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-01-31 16:43:34,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833433862]
[2024-01-31 16:43:34,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-01-31 16:43:34,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-01-31 16:43:34,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-01-31 16:43:34,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-01-31 16:43:34,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-01-31 16:43:34,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44
[2024-01-31 16:43:34,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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)
[2024-01-31 16:43:34,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-01-31 16:43:34,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44
[2024-01-31 16:43:34,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-01-31 16:43:35,482 INFO L124 PetriNetUnfolderBase]: 13439/19846 cut-off events.
[2024-01-31 16:43:35,482 INFO L125 PetriNetUnfolderBase]: For 7894/7894 co-relation queries the response was YES.
[2024-01-31 16:43:35,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41509 conditions, 19846 events. 13439/19846 cut-off events. For 7894/7894 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 135062 event pairs, 5255 based on Foata normal form. 5668/24391 useless extension candidates. Maximal degree in co-relation 32130. Up to 15240 conditions per place.
[2024-01-31 16:43:35,649 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 32 selfloop transitions, 5 changer transitions 0/53 dead transitions.
[2024-01-31 16:43:35,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 256 flow
[2024-01-31 16:43:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-01-31 16:43:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-01-31 16:43:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions.
[2024-01-31 16:43:35,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061
[2024-01-31 16:43:35,652 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 172 flow. Second operand 3 states and 80 transitions.
[2024-01-31 16:43:35,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 256 flow
[2024-01-31 16:43:35,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-01-31 16:43:35,655 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 161 flow
[2024-01-31 16:43:35,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=49, PETRI_TRANSITIONS=43}
[2024-01-31 16:43:35,657 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -6 predicate places.
[2024-01-31 16:43:35,659 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 161 flow
[2024-01-31 16:43:35,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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)
[2024-01-31 16:43:35,660 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-01-31 16:43:35,660 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1]
[2024-01-31 16:43:35,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-01-31 16:43:35,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] ===
[2024-01-31 16:43:35,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-01-31 16:43:35,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1024508233, now seen corresponding path program 1 times
[2024-01-31 16:43:35,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-01-31 16:43:35,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491521158]
[2024-01-31 16:43:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-01-31 16:43:35,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-01-31 16:43:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-01-31 16:43:35,679 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-01-31 16:43:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-01-31 16:43:35,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-01-31 16:43:35,698 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2024-01-31 16:43:35,698 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining)
[2024-01-31 16:43:35,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 13 remaining)
[2024-01-31 16:43:35,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining)
[2024-01-31 16:43:35,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 13 remaining)
[2024-01-31 16:43:35,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining)
[2024-01-31 16:43:35,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 13 remaining)
[2024-01-31 16:43:35,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining)
[2024-01-31 16:43:35,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 13 remaining)
[2024-01-31 16:43:35,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining)
[2024-01-31 16:43:35,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 13 remaining)
[2024-01-31 16:43:35,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining)
[2024-01-31 16:43:35,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 13 remaining)
[2024-01-31 16:43:35,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining)
[2024-01-31 16:43:35,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-01-31 16:43:35,701 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2024-01-31 16:43:35,701 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis
[2024-01-31 16:43:35,701 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances.
[2024-01-31 16:43:35,741 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-01-31 16:43:35,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 158 flow
[2024-01-31 16:43:35,748 INFO L124 PetriNetUnfolderBase]: 0/64 cut-off events.
[2024-01-31 16:43:35,749 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES.
[2024-01-31 16:43:35,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 64 events. 0/64 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 178 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place.
[2024-01-31 16:43:35,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 158 flow
[2024-01-31 16:43:35,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 52 transitions, 158 flow
[2024-01-31 16:43:35,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-01-31 16:43:35,753 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;@d85fef3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-01-31 16:43:35,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations.
[2024-01-31 16:43:35,754 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-01-31 16:43:35,754 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events.
[2024-01-31 16:43:35,754 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2024-01-31 16:43:35,755 INFO L200 CegarLoopForPetriNet]: Found error trace
[2024-01-31 16:43:35,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2024-01-31 16:43:35,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] ===
[2024-01-31 16:43:35,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-01-31 16:43:35,756 INFO L85 PathProgramCache]: Analyzing trace with hash 285414493, now seen corresponding path program 1 times
[2024-01-31 16:43:35,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-01-31 16:43:35,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070328037]
[2024-01-31 16:43:35,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-01-31 16:43:35,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-01-31 16:43:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-01-31 16:43:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-01-31 16:43:35,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-01-31 16:43:35,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070328037]
[2024-01-31 16:43:35,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070328037] provided 1 perfect and 0 imperfect interpolant sequences
[2024-01-31 16:43:35,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-01-31 16:43:35,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-01-31 16:43:35,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340452302]
[2024-01-31 16:43:35,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-01-31 16:43:35,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-01-31 16:43:35,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-01-31 16:43:35,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-01-31 16:43:35,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-01-31 16:43:35,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52
[2024-01-31 16:43:35,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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)
[2024-01-31 16:43:35,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-01-31 16:43:35,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52
[2024-01-31 16:43:35,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand