./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/04_incdec_cas.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 5e519f3a
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/04_incdec_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a025fe4ca65874bde9a09e6a2d9fa9eceda581ed1bc5b23e0ff5285795ed115b
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-5e519f3
[2022-11-02 21:01:04,787 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-02 21:01:04,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 21:01:04,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 21:01:04,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 21:01:04,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 21:01:04,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 21:01:04,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 21:01:04,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 21:01:04,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 21:01:04,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 21:01:04,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 21:01:04,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 21:01:04,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 21:01:04,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 21:01:04,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 21:01:04,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 21:01:04,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 21:01:04,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 21:01:04,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 21:01:04,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 21:01:04,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 21:01:04,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 21:01:04,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 21:01:04,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 21:01:04,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 21:01:04,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 21:01:04,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 21:01:04,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 21:01:04,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 21:01:04,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 21:01:04,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 21:01:04,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 21:01:04,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 21:01:04,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 21:01:04,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 21:01:04,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 21:01:04,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 21:01:04,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 21:01:04,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 21:01:04,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 21:01:04,872 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-02 21:01:04,915 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-02 21:01:04,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 21:01:04,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 21:01:04,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 21:01:04,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 21:01:04,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 21:01:04,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 21:01:04,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-02 21:01:04,919 INFO L138 SettingsManager]: * Use SBE=true
[2022-11-02 21:01:04,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 21:01:04,920 INFO L138 SettingsManager]: * sizeof long=4
[2022-11-02 21:01:04,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-11-02 21:01:04,920 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-11-02 21:01:04,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-02 21:01:04,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-11-02 21:01:04,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 21:01:04,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-11-02 21:01:04,921 INFO L138 SettingsManager]: * sizeof long double=12
[2022-11-02 21:01:04,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-11-02 21:01:04,922 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-02 21:01:04,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-11-02 21:01:04,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 21:01:04,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-11-02 21:01:04,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-02 21:01:04,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 21:01:04,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 21:01:04,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 21:01:04,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-02 21:01:04,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-11-02 21:01:04,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 21:01:04,925 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-02 21:01:04,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-02 21:01:04,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-02 21:01:04,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a025fe4ca65874bde9a09e6a2d9fa9eceda581ed1bc5b23e0ff5285795ed115b
[2022-11-02 21:01:05,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 21:01:05,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 21:01:05,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 21:01:05,294 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-02 21:01:05,295 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-02 21:01:05,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/04_incdec_cas.i
[2022-11-02 21:01:05,375 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/data/483620b5c/0f346261467048b786019b44e33469c3/FLAGacc05652a
[2022-11-02 21:01:06,075 INFO L306 CDTParser]: Found 1 translation units.
[2022-11-02 21:01:06,078 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/sv-benchmarks/c/pthread-ext/04_incdec_cas.i
[2022-11-02 21:01:06,096 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/data/483620b5c/0f346261467048b786019b44e33469c3/FLAGacc05652a
[2022-11-02 21:01:06,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/data/483620b5c/0f346261467048b786019b44e33469c3
[2022-11-02 21:01:06,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 21:01:06,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 21:01:06,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 21:01:06,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 21:01:06,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 21:01:06,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:06" (1/1) ...
[2022-11-02 21:01:06,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73df0dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:06, skipping insertion in model container
[2022-11-02 21:01:06,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:06" (1/1) ...
[2022-11-02 21:01:06,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-02 21:01:06,408 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-02 21:01:06,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/sv-benchmarks/c/pthread-ext/04_incdec_cas.i[30285,30298]
[2022-11-02 21:01:06,924 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/sv-benchmarks/c/pthread-ext/04_incdec_cas.i[30729,30742]
[2022-11-02 21:01:06,937 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:01:06,949 INFO L203 MainTranslator]: Completed pre-run
[2022-11-02 21:01:07,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/sv-benchmarks/c/pthread-ext/04_incdec_cas.i[30285,30298]
[2022-11-02 21:01:07,017 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/sv-benchmarks/c/pthread-ext/04_incdec_cas.i[30729,30742]
[2022-11-02 21:01:07,033 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:01:07,077 INFO L208 MainTranslator]: Completed translation
[2022-11-02 21:01:07,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:07 WrapperNode
[2022-11-02 21:01:07,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 21:01:07,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 21:01:07,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 21:01:07,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 21:01:07,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:07" (1/1) ...
[2022-11-02 21:01:07,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:07" (1/1) ...
[2022-11-02 21:01:07,132 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 158
[2022-11-02 21:01:07,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 21:01:07,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 21:01:07,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 21:01:07,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 21:01:07,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:07" (1/1) ...
[2022-11-02 21:01:07,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:07" (1/1) ...
[2022-11-02 21:01:07,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:07" (1/1) ...
[2022-11-02 21:01:07,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:07" (1/1) ...
[2022-11-02 21:01:07,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:07" (1/1) ...
[2022-11-02 21:01:07,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:07" (1/1) ...
[2022-11-02 21:01:07,163 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:07" (1/1) ...
[2022-11-02 21:01:07,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:07" (1/1) ...
[2022-11-02 21:01:07,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 21:01:07,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 21:01:07,169 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 21:01:07,169 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-11-02 21:01:07,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:07" (1/1) ...
[2022-11-02 21:01:07,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 21:01:07,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 21:01:07,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 21:01:07,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1d353f-e44a-4838-9581-2e3e0908437f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 21:01:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-11-02 21:01:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure thr1
[2022-11-02 21:01:07,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1
[2022-11-02 21:01:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-11-02 21:01:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-02 21:01:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-11-02 21:01:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-11-02 21:01:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-02 21:01:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 21:01:07,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 21:01:07,263 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-11-02 21:01:07,406 INFO L235 CfgBuilder]: Building ICFG
[2022-11-02 21:01:07,408 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 21:01:07,976 INFO L276 CfgBuilder]: Performing block encoding
[2022-11-02 21:01:08,328 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 21:01:08,328 INFO L300 CfgBuilder]: Removed 3 assume(true) statements.
[2022-11-02 21:01:08,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:08 BoogieIcfgContainer
[2022-11-02 21:01:08,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 21:01:08,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 21:01:08,337 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 21:01:08,342 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-11-02 21:01:08,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:01:06" (1/3) ...
[2022-11-02 21:01:08,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef2fd91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:08, skipping insertion in model container
[2022-11-02 21:01:08,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:07" (2/3) ...
[2022-11-02 21:01:08,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef2fd91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:08, skipping insertion in model container
[2022-11-02 21:01:08,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:08" (3/3) ...
[2022-11-02 21:01:08,346 INFO L112 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i
[2022-11-02 21:01:08,364 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-11-02 21:01:08,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 21:01:08,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2022-11-02 21:01:08,377 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-11-02 21:01:08,508 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2022-11-02 21:01:08,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 105 transitions, 215 flow
[2022-11-02 21:01:08,637 INFO L130 PetriNetUnfolder]: 9/116 cut-off events.
[2022-11-02 21:01:08,637 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2022-11-02 21:01:08,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 116 events. 9/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 239 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place.
[2022-11-02 21:01:08,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 105 transitions, 215 flow
[2022-11-02 21:01:08,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 105 transitions, 215 flow
[2022-11-02 21:01:08,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 21:01:08,667 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@67d78960, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 21:01:08,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2022-11-02 21:01:08,686 INFO L130 PetriNetUnfolder]: 2/56 cut-off events.
[2022-11-02 21:01:08,686 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2022-11-02 21:01:08,687 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:01:08,687 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:01:08,688 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2022-11-02 21:01:08,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:01:08,694 INFO L85 PathProgramCache]: Analyzing trace with hash -618762747, now seen corresponding path program 1 times
[2022-11-02 21:01:08,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:01:08,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453877344]
[2022-11-02 21:01:08,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:01:08,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:01:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:01:08,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-11-02 21:01:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:01:08,981 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-11-02 21:01:08,983 INFO L359 BasicCegarLoop]: Counterexample is feasible
[2022-11-02 21:01:08,985 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining)
[2022-11-02 21:01:08,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining)
[2022-11-02 21:01:08,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining)
[2022-11-02 21:01:08,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining)
[2022-11-02 21:01:08,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining)
[2022-11-02 21:01:08,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-02 21:01:08,991 INFO L444 BasicCegarLoop]: Path program histogram: [1]
[2022-11-02 21:01:09,000 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2022-11-02 21:01:09,001 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2022-11-02 21:01:09,115 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2022-11-02 21:01:09,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 174 transitions, 360 flow
[2022-11-02 21:01:09,216 INFO L130 PetriNetUnfolder]: 17/198 cut-off events.
[2022-11-02 21:01:09,216 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2022-11-02 21:01:09,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 198 events. 17/198 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 642 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 149. Up to 6 conditions per place.
[2022-11-02 21:01:09,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 174 transitions, 360 flow
[2022-11-02 21:01:09,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 174 transitions, 360 flow
[2022-11-02 21:01:09,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 21:01:09,226 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@67d78960, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 21:01:09,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations.
[2022-11-02 21:01:09,246 INFO L130 PetriNetUnfolder]: 3/90 cut-off events.
[2022-11-02 21:01:09,247 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2022-11-02 21:01:09,247 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:01:09,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:01:09,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2022-11-02 21:01:09,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:01:09,248 INFO L85 PathProgramCache]: Analyzing trace with hash -444542195, now seen corresponding path program 1 times
[2022-11-02 21:01:09,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:01:09,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913225525]
[2022-11-02 21:01:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:01:09,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:01:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:01:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:01:09,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:01:09,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913225525]
[2022-11-02 21:01:09,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913225525] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:01:09,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:01:09,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 21:01:09,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183945992]
[2022-11-02 21:01:09,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:01:09,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-11-02 21:01:09,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:01:09,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-11-02 21:01:09,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-02 21:01:09,482 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 174
[2022-11-02 21:01:09,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 174 transitions, 360 flow. Second operand has 2 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 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)
[2022-11-02 21:01:09,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:01:09,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 174
[2022-11-02 21:01:09,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:01:09,811 INFO L130 PetriNetUnfolder]: 82/659 cut-off events.
[2022-11-02 21:01:09,811 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES.
[2022-11-02 21:01:09,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 659 events. 82/659 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4386 event pairs, 42 based on Foata normal form. 85/672 useless extension candidates. Maximal degree in co-relation 150. Up to 99 conditions per place.
[2022-11-02 21:01:09,825 INFO L137 encePairwiseOnDemand]: 168/174 looper letters, 14 selfloop transitions, 0 changer transitions 0/163 dead transitions.
[2022-11-02 21:01:09,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 163 transitions, 366 flow
[2022-11-02 21:01:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-11-02 21:01:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2022-11-02 21:01:09,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 328 transitions.
[2022-11-02 21:01:09,853 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9425287356321839
[2022-11-02 21:01:09,857 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 328 transitions.
[2022-11-02 21:01:09,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 328 transitions.
[2022-11-02 21:01:09,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:01:09,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 328 transitions.
[2022-11-02 21:01:09,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 164.0) internal successors, (328), 2 states have internal predecessors, (328), 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)
[2022-11-02 21:01:09,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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)
[2022-11-02 21:01:09,884 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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)
[2022-11-02 21:01:09,887 INFO L175 Difference]: Start difference. First operand has 164 places, 174 transitions, 360 flow. Second operand 2 states and 328 transitions.
[2022-11-02 21:01:09,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 163 transitions, 366 flow
[2022-11-02 21:01:09,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 163 transitions, 364 flow, removed 1 selfloop flow, removed 0 redundant places.
[2022-11-02 21:01:09,905 INFO L231 Difference]: Finished difference. Result has 159 places, 163 transitions, 336 flow
[2022-11-02 21:01:09,908 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=336, PETRI_PLACES=159, PETRI_TRANSITIONS=163}
[2022-11-02 21:01:09,912 INFO L287 CegarLoopForPetriNet]: 164 programPoint places, -5 predicate places.
[2022-11-02 21:01:09,913 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 163 transitions, 336 flow
[2022-11-02 21:01:09,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 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)
[2022-11-02 21:01:09,914 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:01:09,914 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:01:09,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-02 21:01:09,914 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2022-11-02 21:01:09,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:01:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash -983549349, now seen corresponding path program 1 times
[2022-11-02 21:01:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:01:09,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346428249]
[2022-11-02 21:01:09,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:01:09,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:01:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:01:09,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-11-02 21:01:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:01:10,014 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-11-02 21:01:10,015 INFO L359 BasicCegarLoop]: Counterexample is feasible
[2022-11-02 21:01:10,015 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining)
[2022-11-02 21:01:10,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining)
[2022-11-02 21:01:10,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining)
[2022-11-02 21:01:10,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining)
[2022-11-02 21:01:10,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining)
[2022-11-02 21:01:10,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining)
[2022-11-02 21:01:10,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining)
[2022-11-02 21:01:10,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-02 21:01:10,018 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1]
[2022-11-02 21:01:10,018 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis
[2022-11-02 21:01:10,019 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances.
[2022-11-02 21:01:10,114 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2022-11-02 21:01:10,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 243 transitions, 507 flow
[2022-11-02 21:01:10,182 INFO L130 PetriNetUnfolder]: 25/280 cut-off events.
[2022-11-02 21:01:10,183 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES.
[2022-11-02 21:01:10,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 280 events. 25/280 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1098 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 217. Up to 8 conditions per place.
[2022-11-02 21:01:10,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 243 transitions, 507 flow
[2022-11-02 21:01:10,193 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 243 transitions, 507 flow
[2022-11-02 21:01:10,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 21:01:10,195 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@67d78960, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 21:01:10,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations.
[2022-11-02 21:01:10,208 INFO L130 PetriNetUnfolder]: 3/88 cut-off events.
[2022-11-02 21:01:10,208 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES.
[2022-11-02 21:01:10,208 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:01:10,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:01:10,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] ===
[2022-11-02 21:01:10,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:01:10,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1115803541, now seen corresponding path program 1 times
[2022-11-02 21:01:10,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:01:10,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335344338]
[2022-11-02 21:01:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:01:10,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:01:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:01:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:01:10,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:01:10,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335344338]
[2022-11-02 21:01:10,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335344338] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:01:10,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:01:10,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 21:01:10,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545451709]
[2022-11-02 21:01:10,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:01:10,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-11-02 21:01:10,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:01:10,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-11-02 21:01:10,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-02 21:01:10,302 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 243
[2022-11-02 21:01:10,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 243 transitions, 507 flow. Second operand has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 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)
[2022-11-02 21:01:10,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:01:10,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 243
[2022-11-02 21:01:10,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:01:11,795 INFO L130 PetriNetUnfolder]: 915/4866 cut-off events.
[2022-11-02 21:01:11,795 INFO L131 PetriNetUnfolder]: For 463/463 co-relation queries the response was YES.
[2022-11-02 21:01:11,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6266 conditions, 4866 events. 915/4866 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 53446 event pairs, 630 based on Foata normal form. 708/4947 useless extension candidates. Maximal degree in co-relation 789. Up to 1030 conditions per place.
[2022-11-02 21:01:11,882 INFO L137 encePairwiseOnDemand]: 235/243 looper letters, 21 selfloop transitions, 0 changer transitions 0/230 dead transitions.
[2022-11-02 21:01:11,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 230 transitions, 523 flow
[2022-11-02 21:01:11,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-11-02 21:01:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2022-11-02 21:01:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 457 transitions.
[2022-11-02 21:01:11,887 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9403292181069959
[2022-11-02 21:01:11,887 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 457 transitions.
[2022-11-02 21:01:11,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 457 transitions.
[2022-11-02 21:01:11,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:01:11,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 457 transitions.
[2022-11-02 21:01:11,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 228.5) internal successors, (457), 2 states have internal predecessors, (457), 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)
[2022-11-02 21:01:11,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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)
[2022-11-02 21:01:11,894 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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)
[2022-11-02 21:01:11,895 INFO L175 Difference]: Start difference. First operand has 228 places, 243 transitions, 507 flow. Second operand 2 states and 457 transitions.
[2022-11-02 21:01:11,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 230 transitions, 523 flow
[2022-11-02 21:01:11,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 230 transitions, 517 flow, removed 3 selfloop flow, removed 0 redundant places.
[2022-11-02 21:01:11,913 INFO L231 Difference]: Finished difference. Result has 223 places, 230 transitions, 475 flow
[2022-11-02 21:01:11,913 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=475, PETRI_PLACES=223, PETRI_TRANSITIONS=230}
[2022-11-02 21:01:11,914 INFO L287 CegarLoopForPetriNet]: 228 programPoint places, -5 predicate places.
[2022-11-02 21:01:11,914 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 230 transitions, 475 flow
[2022-11-02 21:01:11,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 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)
[2022-11-02 21:01:11,915 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:01:11,916 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:01:11,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-11-02 21:01:11,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] ===
[2022-11-02 21:01:11,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:01:11,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1044587364, now seen corresponding path program 1 times
[2022-11-02 21:01:11,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:01:11,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927952512]
[2022-11-02 21:01:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:01:11,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:01:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:01:11,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-11-02 21:01:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:01:12,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-11-02 21:01:12,036 INFO L359 BasicCegarLoop]: Counterexample is feasible
[2022-11-02 21:01:12,036 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining)
[2022-11-02 21:01:12,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining)
[2022-11-02 21:01:12,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining)
[2022-11-02 21:01:12,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining)
[2022-11-02 21:01:12,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining)
[2022-11-02 21:01:12,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining)
[2022-11-02 21:01:12,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining)
[2022-11-02 21:01:12,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining)
[2022-11-02 21:01:12,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining)
[2022-11-02 21:01:12,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-11-02 21:01:12,039 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1]
[2022-11-02 21:01:12,040 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis
[2022-11-02 21:01:12,040 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances.
[2022-11-02 21:01:12,175 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2022-11-02 21:01:12,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 312 transitions, 656 flow
[2022-11-02 21:01:12,313 INFO L130 PetriNetUnfolder]: 33/362 cut-off events.
[2022-11-02 21:01:12,313 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES.
[2022-11-02 21:01:12,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 362 events. 33/362 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1528 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 288. Up to 10 conditions per place.
[2022-11-02 21:01:12,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 312 transitions, 656 flow
[2022-11-02 21:01:12,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 312 transitions, 656 flow
[2022-11-02 21:01:12,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 21:01:12,331 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@67d78960, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 21:01:12,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations.
[2022-11-02 21:01:12,343 INFO L130 PetriNetUnfolder]: 3/89 cut-off events.
[2022-11-02 21:01:12,344 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2022-11-02 21:01:12,344 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:01:12,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:01:12,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] ===
[2022-11-02 21:01:12,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:01:12,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1647515721, now seen corresponding path program 1 times
[2022-11-02 21:01:12,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:01:12,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369411655]
[2022-11-02 21:01:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:01:12,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:01:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:01:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:01:12,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:01:12,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369411655]
[2022-11-02 21:01:12,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369411655] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:01:12,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:01:12,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 21:01:12,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722464386]
[2022-11-02 21:01:12,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:01:12,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-11-02 21:01:12,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:01:12,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-11-02 21:01:12,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-02 21:01:12,399 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 312
[2022-11-02 21:01:12,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 312 transitions, 656 flow. Second operand has 2 states, 2 states have (on average 275.5) internal successors, (551), 2 states have internal predecessors, (551), 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)
[2022-11-02 21:01:12,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:01:12,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 312
[2022-11-02 21:01:12,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:01:22,852 INFO L130 PetriNetUnfolder]: 8804/36373 cut-off events.
[2022-11-02 21:01:22,852 INFO L131 PetriNetUnfolder]: For 5804/5804 co-relation queries the response was YES.
[2022-11-02 21:01:23,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49289 conditions, 36373 events. 8804/36373 cut-off events. For 5804/5804 co-relation queries the response was YES. Maximal size of possible extension queue 1592. Compared 531236 event pairs, 6804 based on Foata normal form. 5755/36930 useless extension candidates. Maximal degree in co-relation 6347. Up to 9605 conditions per place.
[2022-11-02 21:01:23,516 INFO L137 encePairwiseOnDemand]: 302/312 looper letters, 28 selfloop transitions, 0 changer transitions 0/297 dead transitions.
[2022-11-02 21:01:23,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 297 transitions, 682 flow
[2022-11-02 21:01:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-11-02 21:01:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2022-11-02 21:01:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 586 transitions.
[2022-11-02 21:01:23,519 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9391025641025641
[2022-11-02 21:01:23,519 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 586 transitions.
[2022-11-02 21:01:23,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 586 transitions.
[2022-11-02 21:01:23,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:01:23,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 586 transitions.
[2022-11-02 21:01:23,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 293.0) internal successors, (586), 2 states have internal predecessors, (586), 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)
[2022-11-02 21:01:23,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 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)
[2022-11-02 21:01:23,525 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 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)
[2022-11-02 21:01:23,525 INFO L175 Difference]: Start difference. First operand has 292 places, 312 transitions, 656 flow. Second operand 2 states and 586 transitions.
[2022-11-02 21:01:23,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 297 transitions, 682 flow
[2022-11-02 21:01:23,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 297 transitions, 670 flow, removed 6 selfloop flow, removed 0 redundant places.
[2022-11-02 21:01:23,544 INFO L231 Difference]: Finished difference. Result has 287 places, 297 transitions, 614 flow
[2022-11-02 21:01:23,545 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=614, PETRI_PLACES=287, PETRI_TRANSITIONS=297}
[2022-11-02 21:01:23,549 INFO L287 CegarLoopForPetriNet]: 292 programPoint places, -5 predicate places.
[2022-11-02 21:01:23,554 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 297 transitions, 614 flow
[2022-11-02 21:01:23,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 275.5) internal successors, (551), 2 states have internal predecessors, (551), 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)
[2022-11-02 21:01:23,555 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:01:23,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:01:23,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-11-02 21:01:23,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] ===
[2022-11-02 21:01:23,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:01:23,557 INFO L85 PathProgramCache]: Analyzing trace with hash -551703534, now seen corresponding path program 1 times
[2022-11-02 21:01:23,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:01:23,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948803918]
[2022-11-02 21:01:23,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:01:23,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:01:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:01:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:01:25,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:01:25,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948803918]
[2022-11-02 21:01:25,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948803918] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:01:25,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:01:25,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2022-11-02 21:01:25,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342767482]
[2022-11-02 21:01:25,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:01:25,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-11-02 21:01:25,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:01:25,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-11-02 21:01:25,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182
[2022-11-02 21:01:25,430 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 312
[2022-11-02 21:01:25,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 297 transitions, 614 flow. Second operand has 14 states, 14 states have (on average 204.14285714285714) internal successors, (2858), 14 states have internal predecessors, (2858), 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)
[2022-11-02 21:01:25,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:01:25,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 312
[2022-11-02 21:01:25,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand