./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 5e519f3a
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/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_a635eff5-664b-4423-8e1a-c2cbcafa9324/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/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_a635eff5-664b-4423-8e1a-c2cbcafa9324/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 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45
--- 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 21:12:01,659 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-02 21:12:01,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 21:12:01,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 21:12:01,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 21:12:01,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 21:12:01,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 21:12:01,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 21:12:01,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 21:12:01,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 21:12:01,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 21:12:01,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 21:12:01,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 21:12:01,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 21:12:01,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 21:12:01,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 21:12:01,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 21:12:01,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 21:12:01,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 21:12:01,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 21:12:01,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 21:12:01,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 21:12:01,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 21:12:01,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 21:12:01,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 21:12:01,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 21:12:01,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 21:12:01,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 21:12:01,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 21:12:01,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 21:12:01,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 21:12:01,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 21:12:01,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 21:12:01,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 21:12:01,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 21:12:01,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 21:12:01,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 21:12:01,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 21:12:01,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 21:12:01,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 21:12:01,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 21:12:01,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-02 21:12:01,810 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-02 21:12:01,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 21:12:01,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 21:12:01,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 21:12:01,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 21:12:01,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 21:12:01,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 21:12:01,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-02 21:12:01,814 INFO L138 SettingsManager]: * Use SBE=true
[2022-11-02 21:12:01,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 21:12:01,815 INFO L138 SettingsManager]: * sizeof long=4
[2022-11-02 21:12:01,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-11-02 21:12:01,816 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-11-02 21:12:01,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-02 21:12:01,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-11-02 21:12:01,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 21:12:01,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-11-02 21:12:01,817 INFO L138 SettingsManager]: * sizeof long double=12
[2022-11-02 21:12:01,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-11-02 21:12:01,817 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-02 21:12:01,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-11-02 21:12:01,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 21:12:01,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-11-02 21:12:01,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-02 21:12:01,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 21:12:01,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 21:12:01,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 21:12:01,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-02 21:12:01,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-11-02 21:12:01,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 21:12:01,821 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-02 21:12:01,821 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-02 21:12:01,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-02 21:12:01,822 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_a635eff5-664b-4423-8e1a-c2cbcafa9324/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/bin/uautomizer-Dbtcem3rbc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45
[2022-11-02 21:12:02,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 21:12:02,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 21:12:02,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 21:12:02,155 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-02 21:12:02,156 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-02 21:12:02,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i
[2022-11-02 21:12:02,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/bin/uautomizer-Dbtcem3rbc/data/d446f5c8c/6922b96869114a1a8d2f155cf59c2c32/FLAGd800f0db1
[2022-11-02 21:12:02,851 INFO L306 CDTParser]: Found 1 translation units.
[2022-11-02 21:12:02,852 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i
[2022-11-02 21:12:02,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/bin/uautomizer-Dbtcem3rbc/data/d446f5c8c/6922b96869114a1a8d2f155cf59c2c32/FLAGd800f0db1
[2022-11-02 21:12:03,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/bin/uautomizer-Dbtcem3rbc/data/d446f5c8c/6922b96869114a1a8d2f155cf59c2c32
[2022-11-02 21:12:03,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 21:12:03,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 21:12:03,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 21:12:03,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 21:12:03,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 21:12:03,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:03" (1/1) ...
[2022-11-02 21:12:03,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1219b15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03, skipping insertion in model container
[2022-11-02 21:12:03,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:03" (1/1) ...
[2022-11-02 21:12:03,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-02 21:12:03,200 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-02 21:12:03,687 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_a635eff5-664b-4423-8e1a-c2cbcafa9324/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i[30540,30553]
[2022-11-02 21:12:03,696 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:12:03,716 INFO L203 MainTranslator]: Completed pre-run
[2022-11-02 21:12:03,771 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_a635eff5-664b-4423-8e1a-c2cbcafa9324/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i[30540,30553]
[2022-11-02 21:12:03,785 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:12:03,828 INFO L208 MainTranslator]: Completed translation
[2022-11-02 21:12:03,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03 WrapperNode
[2022-11-02 21:12:03,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 21:12:03,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 21:12:03,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 21:12:03,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 21:12:03,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03" (1/1) ...
[2022-11-02 21:12:03,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03" (1/1) ...
[2022-11-02 21:12:03,900 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82
[2022-11-02 21:12:03,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 21:12:03,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 21:12:03,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 21:12:03,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 21:12:03,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03" (1/1) ...
[2022-11-02 21:12:03,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03" (1/1) ...
[2022-11-02 21:12:03,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03" (1/1) ...
[2022-11-02 21:12:03,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03" (1/1) ...
[2022-11-02 21:12:03,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03" (1/1) ...
[2022-11-02 21:12:03,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03" (1/1) ...
[2022-11-02 21:12:03,946 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03" (1/1) ...
[2022-11-02 21:12:03,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03" (1/1) ...
[2022-11-02 21:12:03,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 21:12:03,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 21:12:03,961 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 21:12:03,961 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-11-02 21:12:03,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03" (1/1) ...
[2022-11-02 21:12:03,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 21:12:03,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 21:12:03,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 21:12:04,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a635eff5-664b-4423-8e1a-c2cbcafa9324/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 21:12:04,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-11-02 21:12:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure thr1
[2022-11-02 21:12:04,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1
[2022-11-02 21:12:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-11-02 21:12:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-02 21:12:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-11-02 21:12:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-11-02 21:12:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-02 21:12:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 21:12:04,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 21:12:04,042 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 21:12:04,188 INFO L235 CfgBuilder]: Building ICFG
[2022-11-02 21:12:04,190 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 21:12:04,419 INFO L276 CfgBuilder]: Performing block encoding
[2022-11-02 21:12:04,496 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 21:12:04,500 INFO L300 CfgBuilder]: Removed 2 assume(true) statements.
[2022-11-02 21:12:04,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:04 BoogieIcfgContainer
[2022-11-02 21:12:04,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 21:12:04,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 21:12:04,509 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 21:12:04,512 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-11-02 21:12:04,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:12:03" (1/3) ...
[2022-11-02 21:12:04,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2e1619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:04, skipping insertion in model container
[2022-11-02 21:12:04,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:03" (2/3) ...
[2022-11-02 21:12:04,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2e1619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:04, skipping insertion in model container
[2022-11-02 21:12:04,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:04" (3/3) ...
[2022-11-02 21:12:04,516 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i
[2022-11-02 21:12:04,531 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-11-02 21:12:04,543 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 21:12:04,543 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-02 21:12:04,543 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-11-02 21:12:04,630 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2022-11-02 21:12:04,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 85 transitions, 175 flow
[2022-11-02 21:12:04,722 INFO L130 PetriNetUnfolder]: 9/96 cut-off events.
[2022-11-02 21:12:04,722 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2022-11-02 21:12:04,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 96 events. 9/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place.
[2022-11-02 21:12:04,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 85 transitions, 175 flow
[2022-11-02 21:12:04,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 85 transitions, 175 flow
[2022-11-02 21:12:04,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 21:12:04,751 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;@4c94384b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 21:12:04,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2022-11-02 21:12:04,771 INFO L130 PetriNetUnfolder]: 2/52 cut-off events.
[2022-11-02 21:12:04,771 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2022-11-02 21:12:04,772 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:12:04,772 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, 1]
[2022-11-02 21:12:04,773 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:12:04,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:12:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1595637654, now seen corresponding path program 1 times
[2022-11-02 21:12:04,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:12:04,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760901121]
[2022-11-02 21:12:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:12:04,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:12:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:12:04,988 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-11-02 21:12:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:12:05,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-11-02 21:12:05,074 INFO L359 BasicCegarLoop]: Counterexample is feasible
[2022-11-02 21:12:05,075 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining)
[2022-11-02 21:12:05,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining)
[2022-11-02 21:12:05,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining)
[2022-11-02 21:12:05,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-02 21:12:05,078 INFO L444 BasicCegarLoop]: Path program histogram: [1]
[2022-11-02 21:12:05,082 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2022-11-02 21:12:05,082 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2022-11-02 21:12:05,151 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2022-11-02 21:12:05,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 133 transitions, 278 flow
[2022-11-02 21:12:05,200 INFO L130 PetriNetUnfolder]: 17/157 cut-off events.
[2022-11-02 21:12:05,201 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2022-11-02 21:12:05,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 157 events. 17/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 280 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 107. Up to 6 conditions per place.
[2022-11-02 21:12:05,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 133 transitions, 278 flow
[2022-11-02 21:12:05,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 133 transitions, 278 flow
[2022-11-02 21:12:05,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 21:12:05,209 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;@4c94384b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 21:12:05,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2022-11-02 21:12:05,228 INFO L130 PetriNetUnfolder]: 4/81 cut-off events.
[2022-11-02 21:12:05,228 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2022-11-02 21:12:05,229 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:12:05,229 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, 1]
[2022-11-02 21:12:05,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] ===
[2022-11-02 21:12:05,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:12:05,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1914301512, now seen corresponding path program 1 times
[2022-11-02 21:12:05,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:12:05,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469769231]
[2022-11-02 21:12:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:12:05,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:12:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:12:05,269 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-11-02 21:12:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:12:05,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-11-02 21:12:05,322 INFO L359 BasicCegarLoop]: Counterexample is feasible
[2022-11-02 21:12:05,322 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining)
[2022-11-02 21:12:05,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining)
[2022-11-02 21:12:05,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining)
[2022-11-02 21:12:05,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining)
[2022-11-02 21:12:05,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-02 21:12:05,324 INFO L444 BasicCegarLoop]: Path program histogram: [1]
[2022-11-02 21:12:05,327 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis
[2022-11-02 21:12:05,328 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances.
[2022-11-02 21:12:05,377 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2022-11-02 21:12:05,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 181 transitions, 383 flow
[2022-11-02 21:12:05,440 INFO L130 PetriNetUnfolder]: 25/218 cut-off events.
[2022-11-02 21:12:05,444 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES.
[2022-11-02 21:12:05,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 218 events. 25/218 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 532 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place.
[2022-11-02 21:12:05,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 181 transitions, 383 flow
[2022-11-02 21:12:05,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 181 transitions, 383 flow
[2022-11-02 21:12:05,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 21:12:05,466 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;@4c94384b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 21:12:05,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2022-11-02 21:12:05,496 INFO L130 PetriNetUnfolder]: 7/120 cut-off events.
[2022-11-02 21:12:05,510 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES.
[2022-11-02 21:12:05,511 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:12:05,511 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, 1]
[2022-11-02 21:12:05,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-11-02 21:12:05,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:12:05,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1234620963, now seen corresponding path program 1 times
[2022-11-02 21:12:05,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:12:05,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032814810]
[2022-11-02 21:12:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:12:05,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:12:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:12:05,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-11-02 21:12:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:12:05,614 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-11-02 21:12:05,618 INFO L359 BasicCegarLoop]: Counterexample is feasible
[2022-11-02 21:12:05,619 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining)
[2022-11-02 21:12:05,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining)
[2022-11-02 21:12:05,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining)
[2022-11-02 21:12:05,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining)
[2022-11-02 21:12:05,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining)
[2022-11-02 21:12:05,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-02 21:12:05,623 INFO L444 BasicCegarLoop]: Path program histogram: [1]
[2022-11-02 21:12:05,623 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis
[2022-11-02 21:12:05,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances.
[2022-11-02 21:12:05,723 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2022-11-02 21:12:05,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 229 transitions, 490 flow
[2022-11-02 21:12:05,800 INFO L130 PetriNetUnfolder]: 33/279 cut-off events.
[2022-11-02 21:12:05,800 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES.
[2022-11-02 21:12:05,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 279 events. 33/279 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 804 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 226. Up to 10 conditions per place.
[2022-11-02 21:12:05,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 229 transitions, 490 flow
[2022-11-02 21:12:05,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 229 transitions, 490 flow
[2022-11-02 21:12:05,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 21:12:05,812 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;@4c94384b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 21:12:05,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2022-11-02 21:12:05,834 INFO L130 PetriNetUnfolder]: 13/151 cut-off events.
[2022-11-02 21:12:05,834 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES.
[2022-11-02 21:12:05,834 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:12:05,835 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, 1, 1, 1, 1]
[2022-11-02 21:12:05,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2022-11-02 21:12:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:12:05,836 INFO L85 PathProgramCache]: Analyzing trace with hash -981071045, now seen corresponding path program 1 times
[2022-11-02 21:12:05,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:12:05,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43987470]
[2022-11-02 21:12:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:12:05,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:12:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:12:06,068 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 21:12:06,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:12:06,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43987470]
[2022-11-02 21:12:06,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43987470] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:12:06,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:12:06,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:12:06,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161572406]
[2022-11-02 21:12:06,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:12:06,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:12:06,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:12:06,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:12:06,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:12:06,129 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 229
[2022-11-02 21:12:06,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 229 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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 21:12:06,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:12:06,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 229
[2022-11-02 21:12:06,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:12:07,772 INFO L130 PetriNetUnfolder]: 1600/5568 cut-off events.
[2022-11-02 21:12:07,773 INFO L131 PetriNetUnfolder]: For 1954/1954 co-relation queries the response was YES.
[2022-11-02 21:12:07,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8484 conditions, 5568 events. 1600/5568 cut-off events. For 1954/1954 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 53188 event pairs, 852 based on Foata normal form. 1982/6749 useless extension candidates. Maximal degree in co-relation 2196. Up to 1333 conditions per place.
[2022-11-02 21:12:07,894 INFO L137 encePairwiseOnDemand]: 212/229 looper letters, 32 selfloop transitions, 2 changer transitions 0/219 dead transitions.
[2022-11-02 21:12:07,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 219 transitions, 559 flow
[2022-11-02 21:12:07,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 21:12:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-02 21:12:07,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions.
[2022-11-02 21:12:07,919 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9199417758369723
[2022-11-02 21:12:07,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions.
[2022-11-02 21:12:07,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions.
[2022-11-02 21:12:07,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:12:07,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions.
[2022-11-02 21:12:07,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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 21:12:07,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 21:12:07,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 21:12:07,945 INFO L175 Difference]: Start difference. First operand has 209 places, 229 transitions, 490 flow. Second operand 3 states and 632 transitions.
[2022-11-02 21:12:07,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 219 transitions, 559 flow
[2022-11-02 21:12:07,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 219 transitions, 541 flow, removed 9 selfloop flow, removed 0 redundant places.
[2022-11-02 21:12:07,975 INFO L231 Difference]: Finished difference. Result has 202 places, 207 transitions, 444 flow
[2022-11-02 21:12:07,977 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=444, PETRI_PLACES=202, PETRI_TRANSITIONS=207}
[2022-11-02 21:12:07,981 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -7 predicate places.
[2022-11-02 21:12:07,981 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 207 transitions, 444 flow
[2022-11-02 21:12:07,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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 21:12:07,982 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:12:07,982 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, 1, 1, 1, 1, 1]
[2022-11-02 21:12:07,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-11-02 21:12:07,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2022-11-02 21:12:07,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:12:07,984 INFO L85 PathProgramCache]: Analyzing trace with hash 568658758, now seen corresponding path program 1 times
[2022-11-02 21:12:07,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:12:07,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238279990]
[2022-11-02 21:12:07,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:12:07,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:12:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:12:08,103 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 21:12:08,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:12:08,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238279990]
[2022-11-02 21:12:08,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238279990] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:12:08,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:12:08,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:12:08,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690109788]
[2022-11-02 21:12:08,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:12:08,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:12:08,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:12:08,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:12:08,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:12:08,109 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 229
[2022-11-02 21:12:08,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 207 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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 21:12:08,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:12:08,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 229
[2022-11-02 21:12:08,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:12:09,579 INFO L130 PetriNetUnfolder]: 1855/6197 cut-off events.
[2022-11-02 21:12:09,579 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES.
[2022-11-02 21:12:09,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9407 conditions, 6197 events. 1855/6197 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 60053 event pairs, 609 based on Foata normal form. 0/5423 useless extension candidates. Maximal degree in co-relation 7389. Up to 1330 conditions per place.
[2022-11-02 21:12:09,700 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 32 selfloop transitions, 3 changer transitions 0/216 dead transitions.
[2022-11-02 21:12:09,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 216 transitions, 547 flow
[2022-11-02 21:12:09,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 21:12:09,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-02 21:12:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions.
[2022-11-02 21:12:09,703 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8602620087336245
[2022-11-02 21:12:09,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions.
[2022-11-02 21:12:09,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions.
[2022-11-02 21:12:09,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:12:09,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions.
[2022-11-02 21:12:09,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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 21:12:09,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 21:12:09,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 21:12:09,709 INFO L175 Difference]: Start difference. First operand has 202 places, 207 transitions, 444 flow. Second operand 3 states and 591 transitions.
[2022-11-02 21:12:09,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 216 transitions, 547 flow
[2022-11-02 21:12:09,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 216 transitions, 545 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-02 21:12:09,717 INFO L231 Difference]: Finished difference. Result has 204 places, 207 transitions, 453 flow
[2022-11-02 21:12:09,717 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=453, PETRI_PLACES=204, PETRI_TRANSITIONS=207}
[2022-11-02 21:12:09,718 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -5 predicate places.
[2022-11-02 21:12:09,719 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 207 transitions, 453 flow
[2022-11-02 21:12:09,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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 21:12:09,719 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:12:09,720 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 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 21:12:09,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-11-02 21:12:09,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2022-11-02 21:12:09,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:12:09,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2130882885, now seen corresponding path program 1 times
[2022-11-02 21:12:09,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:12:09,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839724728]
[2022-11-02 21:12:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:12:09,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:12:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:12:09,757 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-11-02 21:12:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:12:09,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-11-02 21:12:09,777 INFO L359 BasicCegarLoop]: Counterexample is feasible
[2022-11-02 21:12:09,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining)
[2022-11-02 21:12:09,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining)
[2022-11-02 21:12:09,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining)
[2022-11-02 21:12:09,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining)
[2022-11-02 21:12:09,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining)
[2022-11-02 21:12:09,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining)
[2022-11-02 21:12:09,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-11-02 21:12:09,779 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2022-11-02 21:12:09,780 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis
[2022-11-02 21:12:09,780 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances.
[2022-11-02 21:12:09,838 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2022-11-02 21:12:09,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 277 transitions, 599 flow
[2022-11-02 21:12:09,932 INFO L130 PetriNetUnfolder]: 41/340 cut-off events.
[2022-11-02 21:12:09,932 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES.
[2022-11-02 21:12:09,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 340 events. 41/340 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1068 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 292. Up to 12 conditions per place.
[2022-11-02 21:12:09,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 277 transitions, 599 flow
[2022-11-02 21:12:09,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 277 transitions, 599 flow
[2022-11-02 21:12:09,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 21:12:09,960 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;@4c94384b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 21:12:09,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations.
[2022-11-02 21:12:09,983 INFO L130 PetriNetUnfolder]: 13/150 cut-off events.
[2022-11-02 21:12:09,983 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES.
[2022-11-02 21:12:09,983 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:12:09,984 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, 1, 1, 1, 1]
[2022-11-02 21:12:09,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2022-11-02 21:12:09,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:12:09,985 INFO L85 PathProgramCache]: Analyzing trace with hash -635192437, now seen corresponding path program 1 times
[2022-11-02 21:12:09,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:12:09,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610753987]
[2022-11-02 21:12:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:12:09,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:12:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:12:10,022 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 21:12:10,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:12:10,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610753987]
[2022-11-02 21:12:10,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610753987] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:12:10,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:12:10,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 21:12:10,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625358430]
[2022-11-02 21:12:10,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:12:10,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-11-02 21:12:10,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:12:10,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-11-02 21:12:10,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-02 21:12:10,026 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277
[2022-11-02 21:12:10,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 277 transitions, 599 flow. Second operand has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 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 21:12:10,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:12:10,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277
[2022-11-02 21:12:10,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:12:11,780 INFO L130 PetriNetUnfolder]: 1336/7010 cut-off events.
[2022-11-02 21:12:11,781 INFO L131 PetriNetUnfolder]: For 2359/2359 co-relation queries the response was YES.
[2022-11-02 21:12:11,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9305 conditions, 7010 events. 1336/7010 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 72974 event pairs, 852 based on Foata normal form. 1912/8143 useless extension candidates. Maximal degree in co-relation 2918. Up to 1216 conditions per place.
[2022-11-02 21:12:12,037 INFO L137 encePairwiseOnDemand]: 260/277 looper letters, 15 selfloop transitions, 0 changer transitions 0/250 dead transitions.
[2022-11-02 21:12:12,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 250 transitions, 575 flow
[2022-11-02 21:12:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-11-02 21:12:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2022-11-02 21:12:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 512 transitions.
[2022-11-02 21:12:12,040 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.924187725631769
[2022-11-02 21:12:12,040 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 512 transitions.
[2022-11-02 21:12:12,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 512 transitions.
[2022-11-02 21:12:12,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:12:12,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 512 transitions.
[2022-11-02 21:12:12,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 256.0) internal successors, (512), 2 states have internal predecessors, (512), 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 21:12:12,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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 21:12:12,044 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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 21:12:12,045 INFO L175 Difference]: Start difference. First operand has 252 places, 277 transitions, 599 flow. Second operand 2 states and 512 transitions.
[2022-11-02 21:12:12,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 250 transitions, 575 flow
[2022-11-02 21:12:12,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 250 transitions, 555 flow, removed 10 selfloop flow, removed 0 redundant places.
[2022-11-02 21:12:12,052 INFO L231 Difference]: Finished difference. Result has 242 places, 250 transitions, 525 flow
[2022-11-02 21:12:12,053 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=525, PETRI_PLACES=242, PETRI_TRANSITIONS=250}
[2022-11-02 21:12:12,055 INFO L287 CegarLoopForPetriNet]: 252 programPoint places, -10 predicate places.
[2022-11-02 21:12:12,056 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 250 transitions, 525 flow
[2022-11-02 21:12:12,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 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 21:12:12,056 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:12:12,056 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, 1, 1, 1, 1]
[2022-11-02 21:12:12,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-11-02 21:12:12,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2022-11-02 21:12:12,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:12:12,058 INFO L85 PathProgramCache]: Analyzing trace with hash -606563286, now seen corresponding path program 1 times
[2022-11-02 21:12:12,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:12:12,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684852665]
[2022-11-02 21:12:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:12:12,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:12:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:12:12,142 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 21:12:12,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:12:12,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684852665]
[2022-11-02 21:12:12,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684852665] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:12:12,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:12:12,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:12:12,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078026746]
[2022-11-02 21:12:12,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:12:12,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:12:12,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:12:12,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:12:12,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:12:12,148 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 277
[2022-11-02 21:12:12,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 250 transitions, 525 flow. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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 21:12:12,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:12:12,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 277
[2022-11-02 21:12:12,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:12:16,589 INFO L130 PetriNetUnfolder]: 6265/20703 cut-off events.
[2022-11-02 21:12:16,589 INFO L131 PetriNetUnfolder]: For 1801/1801 co-relation queries the response was YES.
[2022-11-02 21:12:16,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29363 conditions, 20703 events. 6265/20703 cut-off events. For 1801/1801 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 246471 event pairs, 3444 based on Foata normal form. 0/17874 useless extension candidates. Maximal degree in co-relation 29355. Up to 4897 conditions per place.
[2022-11-02 21:12:17,058 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 38 selfloop transitions, 2 changer transitions 0/266 dead transitions.
[2022-11-02 21:12:17,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 266 transitions, 657 flow
[2022-11-02 21:12:17,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 21:12:17,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-02 21:12:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions.
[2022-11-02 21:12:17,063 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8832731648616126
[2022-11-02 21:12:17,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions.
[2022-11-02 21:12:17,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions.
[2022-11-02 21:12:17,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:12:17,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions.
[2022-11-02 21:12:17,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 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 21:12:17,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 21:12:17,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 21:12:17,069 INFO L175 Difference]: Start difference. First operand has 242 places, 250 transitions, 525 flow. Second operand 3 states and 734 transitions.
[2022-11-02 21:12:17,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 266 transitions, 657 flow
[2022-11-02 21:12:17,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 266 transitions, 657 flow, removed 0 selfloop flow, removed 0 redundant places.
[2022-11-02 21:12:17,079 INFO L231 Difference]: Finished difference. Result has 245 places, 251 transitions, 537 flow
[2022-11-02 21:12:17,080 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=537, PETRI_PLACES=245, PETRI_TRANSITIONS=251}
[2022-11-02 21:12:17,081 INFO L287 CegarLoopForPetriNet]: 252 programPoint places, -7 predicate places.
[2022-11-02 21:12:17,081 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 251 transitions, 537 flow
[2022-11-02 21:12:17,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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 21:12:17,082 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:12:17,082 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, 1, 1, 1, 1, 1]
[2022-11-02 21:12:17,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-11-02 21:12:17,082 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2022-11-02 21:12:17,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:12:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash -706502371, now seen corresponding path program 1 times
[2022-11-02 21:12:17,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:12:17,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930451497]
[2022-11-02 21:12:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:12:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:12:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:12:17,151 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 21:12:17,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:12:17,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930451497]
[2022-11-02 21:12:17,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930451497] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:12:17,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:12:17,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:12:17,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327753187]
[2022-11-02 21:12:17,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:12:17,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:12:17,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:12:17,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:12:17,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:12:17,156 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 277
[2022-11-02 21:12:17,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 251 transitions, 537 flow. Second operand has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 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 21:12:17,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:12:17,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 277
[2022-11-02 21:12:17,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:12:21,866 INFO L130 PetriNetUnfolder]: 7276/22799 cut-off events.
[2022-11-02 21:12:21,866 INFO L131 PetriNetUnfolder]: For 2192/2192 co-relation queries the response was YES.
[2022-11-02 21:12:22,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33940 conditions, 22799 events. 7276/22799 cut-off events. For 2192/2192 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 271315 event pairs, 2472 based on Foata normal form. 0/20093 useless extension candidates. Maximal degree in co-relation 33930. Up to 4813 conditions per place.
[2022-11-02 21:12:22,583 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 38 selfloop transitions, 3 changer transitions 0/263 dead transitions.
[2022-11-02 21:12:22,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 263 transitions, 663 flow
[2022-11-02 21:12:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 21:12:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-02 21:12:22,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 720 transitions.
[2022-11-02 21:12:22,590 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8664259927797834
[2022-11-02 21:12:22,590 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 720 transitions.
[2022-11-02 21:12:22,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 720 transitions.
[2022-11-02 21:12:22,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:12:22,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 720 transitions.
[2022-11-02 21:12:22,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 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 21:12:22,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 21:12:22,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 21:12:22,596 INFO L175 Difference]: Start difference. First operand has 245 places, 251 transitions, 537 flow. Second operand 3 states and 720 transitions.
[2022-11-02 21:12:22,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 263 transitions, 663 flow
[2022-11-02 21:12:22,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 263 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-02 21:12:22,603 INFO L231 Difference]: Finished difference. Result has 247 places, 251 transitions, 546 flow
[2022-11-02 21:12:22,603 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=247, PETRI_TRANSITIONS=251}
[2022-11-02 21:12:22,606 INFO L287 CegarLoopForPetriNet]: 252 programPoint places, -5 predicate places.
[2022-11-02 21:12:22,606 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 251 transitions, 546 flow
[2022-11-02 21:12:22,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 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 21:12:22,607 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:12:22,608 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, 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 21:12:22,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-11-02 21:12:22,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2022-11-02 21:12:22,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:12:22,609 INFO L85 PathProgramCache]: Analyzing trace with hash 680781651, now seen corresponding path program 1 times
[2022-11-02 21:12:22,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:12:22,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523585448]
[2022-11-02 21:12:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:12:22,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:12:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:12:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2022-11-02 21:12:22,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:12:22,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523585448]
[2022-11-02 21:12:22,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523585448] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:12:22,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:12:22,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:12:22,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463493670]
[2022-11-02 21:12:22,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:12:22,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:12:22,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:12:22,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:12:22,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:12:22,694 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 277
[2022-11-02 21:12:22,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 251 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 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 21:12:22,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:12:22,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 277
[2022-11-02 21:12:22,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:12:26,262 INFO L130 PetriNetUnfolder]: 6004/17909 cut-off events.
[2022-11-02 21:12:26,263 INFO L131 PetriNetUnfolder]: For 1769/1769 co-relation queries the response was YES.
[2022-11-02 21:12:26,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26492 conditions, 17909 events. 6004/17909 cut-off events. For 1769/1769 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 202825 event pairs, 3436 based on Foata normal form. 0/15492 useless extension candidates. Maximal degree in co-relation 26481. Up to 4880 conditions per place.
[2022-11-02 21:12:26,803 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 37 selfloop transitions, 2 changer transitions 0/266 dead transitions.
[2022-11-02 21:12:26,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 266 transitions, 669 flow
[2022-11-02 21:12:26,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 21:12:26,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-02 21:12:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 733 transitions.
[2022-11-02 21:12:26,806 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8820697954271961
[2022-11-02 21:12:26,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 733 transitions.
[2022-11-02 21:12:26,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 733 transitions.
[2022-11-02 21:12:26,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:12:26,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 733 transitions.
[2022-11-02 21:12:26,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 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 21:12:26,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 21:12:26,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 21:12:26,812 INFO L175 Difference]: Start difference. First operand has 247 places, 251 transitions, 546 flow. Second operand 3 states and 733 transitions.
[2022-11-02 21:12:26,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 266 transitions, 669 flow
[2022-11-02 21:12:26,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 266 transitions, 666 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-02 21:12:26,822 INFO L231 Difference]: Finished difference. Result has 249 places, 252 transitions, 555 flow
[2022-11-02 21:12:26,823 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=555, PETRI_PLACES=249, PETRI_TRANSITIONS=252}
[2022-11-02 21:12:26,826 INFO L287 CegarLoopForPetriNet]: 252 programPoint places, -3 predicate places.
[2022-11-02 21:12:26,826 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 252 transitions, 555 flow
[2022-11-02 21:12:26,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 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 21:12:26,827 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:12:26,827 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, 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 21:12:26,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-11-02 21:12:26,828 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2022-11-02 21:12:26,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:12:26,828 INFO L85 PathProgramCache]: Analyzing trace with hash 546484965, now seen corresponding path program 1 times
[2022-11-02 21:12:26,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:12:26,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040975751]
[2022-11-02 21:12:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:12:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:12:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:12:26,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2022-11-02 21:12:26,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:12:26,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040975751]
[2022-11-02 21:12:26,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040975751] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:12:26,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:12:26,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:12:26,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477758513]
[2022-11-02 21:12:26,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:12:26,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:12:26,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:12:26,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:12:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:12:26,890 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 277
[2022-11-02 21:12:26,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 252 transitions, 555 flow. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 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 21:12:26,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:12:26,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 277
[2022-11-02 21:12:26,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:12:30,905 INFO L130 PetriNetUnfolder]: 7009/20036 cut-off events.
[2022-11-02 21:12:30,906 INFO L131 PetriNetUnfolder]: For 2182/2182 co-relation queries the response was YES.
[2022-11-02 21:12:31,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31112 conditions, 20036 events. 7009/20036 cut-off events. For 2182/2182 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 227750 event pairs, 2467 based on Foata normal form. 0/17702 useless extension candidates. Maximal degree in co-relation 31100. Up to 4790 conditions per place.
[2022-11-02 21:12:31,282 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 37 selfloop transitions, 3 changer transitions 0/263 dead transitions.
[2022-11-02 21:12:31,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 263 transitions, 672 flow
[2022-11-02 21:12:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 21:12:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-02 21:12:31,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions.
[2022-11-02 21:12:31,285 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.865222623345367
[2022-11-02 21:12:31,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions.
[2022-11-02 21:12:31,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions.
[2022-11-02 21:12:31,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:12:31,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions.
[2022-11-02 21:12:31,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 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 21:12:31,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 21:12:31,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 21:12:31,297 INFO L175 Difference]: Start difference. First operand has 249 places, 252 transitions, 555 flow. Second operand 3 states and 719 transitions.
[2022-11-02 21:12:31,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 263 transitions, 672 flow
[2022-11-02 21:12:31,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 263 transitions, 670 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-02 21:12:31,316 INFO L231 Difference]: Finished difference. Result has 251 places, 252 transitions, 564 flow
[2022-11-02 21:12:31,316 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=564, PETRI_PLACES=251, PETRI_TRANSITIONS=252}
[2022-11-02 21:12:31,317 INFO L287 CegarLoopForPetriNet]: 252 programPoint places, -1 predicate places.
[2022-11-02 21:12:31,318 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 252 transitions, 564 flow
[2022-11-02 21:12:31,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 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 21:12:31,318 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:12:31,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:12:31,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-11-02 21:12:31,319 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] ===
[2022-11-02 21:12:31,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:12:31,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1342180526, now seen corresponding path program 1 times
[2022-11-02 21:12:31,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:12:31,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534858391]
[2022-11-02 21:12:31,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:12:31,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:12:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:12:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-11-02 21:12:31,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:12:31,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534858391]
[2022-11-02 21:12:31,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534858391] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:12:31,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:12:31,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 21:12:31,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138855026]
[2022-11-02 21:12:31,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:12:31,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 21:12:31,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:12:31,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 21:12:31,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:12:31,416 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 277
[2022-11-02 21:12:31,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 252 transitions, 564 flow. Second operand has 4 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 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 21:12:31,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:12:31,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 277
[2022-11-02 21:12:31,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand