./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for overflows
Using default analysis
Version 38b53e6a
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38
--- 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-38b53e6
[2022-11-25 17:28:06,750 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-25 17:28:06,754 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-25 17:28:06,778 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-25 17:28:06,784 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-25 17:28:06,789 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-25 17:28:06,792 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-25 17:28:06,794 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-25 17:28:06,796 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-25 17:28:06,797 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-25 17:28:06,798 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-25 17:28:06,799 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-25 17:28:06,800 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-25 17:28:06,801 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-25 17:28:06,802 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-25 17:28:06,804 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-25 17:28:06,805 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-25 17:28:06,806 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-25 17:28:06,808 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-25 17:28:06,811 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-25 17:28:06,813 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-25 17:28:06,814 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-25 17:28:06,816 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-25 17:28:06,817 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-25 17:28:06,821 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-25 17:28:06,821 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-25 17:28:06,822 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-25 17:28:06,823 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-25 17:28:06,823 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-25 17:28:06,824 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-25 17:28:06,825 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-25 17:28:06,826 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-25 17:28:06,827 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-25 17:28:06,828 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-25 17:28:06,829 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-25 17:28:06,829 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-25 17:28:06,830 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-25 17:28:06,830 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-25 17:28:06,831 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-25 17:28:06,832 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-25 17:28:06,833 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-25 17:28:06,839 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf
[2022-11-25 17:28:06,880 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-25 17:28:06,882 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-25 17:28:06,883 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-25 17:28:06,883 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-25 17:28:06,884 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-25 17:28:06,884 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-25 17:28:06,885 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-25 17:28:06,885 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-25 17:28:06,886 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-25 17:28:06,886 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-25 17:28:06,887 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-25 17:28:06,887 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2022-11-25 17:28:06,888 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-25 17:28:06,888 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-25 17:28:06,888 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-25 17:28:06,888 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-25 17:28:06,889 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-25 17:28:06,889 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-25 17:28:06,889 INFO  L138        SettingsManager]:  * Check absence of signed integer overflows=true
[2022-11-25 17:28:06,889 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-25 17:28:06,889 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-25 17:28:06,890 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-25 17:28:06,890 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-25 17:28:06,890 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-25 17:28:06,890 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-25 17:28:06,891 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-25 17:28:06,891 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-25 17:28:06,891 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-25 17:28:06,892 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-25 17:28:06,892 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-25 17:28:06,893 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-25 17:28:06,893 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-25 17:28:06,893 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-25 17:28:06,893 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-25 17:28:06,894 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2022-11-25 17:28:06,894 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-11-25 17:28:06,894 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/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_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R
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 ! overflow) )


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 -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38
[2022-11-25 17:28:07,242 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-25 17:28:07,292 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-25 17:28:07,296 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-25 17:28:07,298 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-25 17:28:07,298 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-25 17:28:07,300 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i
[2022-11-25 17:28:10,985 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-11-25 17:28:11,471 INFO  L351              CDTParser]: Found 1 translation units.
[2022-11-25 17:28:11,478 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i
[2022-11-25 17:28:11,504 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/data/c4af44c6c/179a9254ebf74432a66eaa4dd4fea04e/FLAGa6cdfcd7c
[2022-11-25 17:28:11,524 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/data/c4af44c6c/179a9254ebf74432a66eaa4dd4fea04e
[2022-11-25 17:28:11,528 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-25 17:28:11,530 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-25 17:28:11,531 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-25 17:28:11,532 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-25 17:28:11,539 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-25 17:28:11,540 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:28:11" (1/1) ...
[2022-11-25 17:28:11,541 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36dd9f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:11, skipping insertion in model container
[2022-11-25 17:28:11,542 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:28:11" (1/1) ...
[2022-11-25 17:28:11,552 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-25 17:28:11,625 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-25 17:28:12,391 WARN  L237   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_e805f824-f0f9-4097-93c5-505c93ea7870/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770]
[2022-11-25 17:28:12,395 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-25 17:28:12,425 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-25 17:28:12,517 WARN  L237   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_e805f824-f0f9-4097-93c5-505c93ea7870/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770]
[2022-11-25 17:28:12,519 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-25 17:28:12,581 INFO  L208         MainTranslator]: Completed translation
[2022-11-25 17:28:12,582 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:12 WrapperNode
[2022-11-25 17:28:12,582 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-25 17:28:12,584 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-25 17:28:12,584 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-25 17:28:12,586 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-25 17:28:12,596 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:12" (1/1) ...
[2022-11-25 17:28:12,626 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:12" (1/1) ...
[2022-11-25 17:28:12,682 INFO  L138                Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81
[2022-11-25 17:28:12,682 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-25 17:28:12,683 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-25 17:28:12,684 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-25 17:28:12,684 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-25 17:28:12,696 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:12" (1/1) ...
[2022-11-25 17:28:12,696 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:12" (1/1) ...
[2022-11-25 17:28:12,700 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:12" (1/1) ...
[2022-11-25 17:28:12,701 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:12" (1/1) ...
[2022-11-25 17:28:12,708 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:12" (1/1) ...
[2022-11-25 17:28:12,713 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:12" (1/1) ...
[2022-11-25 17:28:12,716 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:12" (1/1) ...
[2022-11-25 17:28:12,718 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:12" (1/1) ...
[2022-11-25 17:28:12,734 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-25 17:28:12,736 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-25 17:28:12,736 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-25 17:28:12,736 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-25 17:28:12,737 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:12" (1/1) ...
[2022-11-25 17:28:12,746 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-25 17:28:12,762 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 17:28:12,780 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-25 17:28:12,817 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-25 17:28:12,843 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-11-25 17:28:12,843 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-11-25 17:28:12,844 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2022-11-25 17:28:12,844 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2022-11-25 17:28:12,844 INFO  L130     BoogieDeclarations]: Found specification of procedure thread1
[2022-11-25 17:28:12,845 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread1
[2022-11-25 17:28:12,845 INFO  L130     BoogieDeclarations]: Found specification of procedure thread2
[2022-11-25 17:28:12,845 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread2
[2022-11-25 17:28:12,845 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2022-11-25 17:28:12,845 INFO  L130     BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2022-11-25 17:28:12,846 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-25 17:28:12,846 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-25 17:28:12,846 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-25 17:28:12,846 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-25 17:28:12,848 WARN  L209             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-11-25 17:28:13,120 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-25 17:28:13,123 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-25 17:28:13,562 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-25 17:28:13,572 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-25 17:28:13,580 INFO  L300             CfgBuilder]: Removed 4 assume(true) statements.
[2022-11-25 17:28:13,583 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:28:13 BoogieIcfgContainer
[2022-11-25 17:28:13,585 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-25 17:28:13,588 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-25 17:28:13,591 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-25 17:28:13,595 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-25 17:28:13,596 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:28:11" (1/3) ...
[2022-11-25 17:28:13,598 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68629ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:28:13, skipping insertion in model container
[2022-11-25 17:28:13,599 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:28:12" (2/3) ...
[2022-11-25 17:28:13,600 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68629ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:28:13, skipping insertion in model container
[2022-11-25 17:28:13,600 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:28:13" (3/3) ...
[2022-11-25 17:28:13,603 INFO  L112   eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i
[2022-11-25 17:28:13,616 WARN  L145   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-11-25 17:28:13,631 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-25 17:28:13,631 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations.
[2022-11-25 17:28:13,631 INFO  L515   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-11-25 17:28:13,843 INFO  L144    ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2022-11-25 17:28:13,910 INFO  L73            FinitePrefix]: Start finitePrefix. Operand has 147 places, 150 transitions, 316 flow
[2022-11-25 17:28:14,041 INFO  L130       PetriNetUnfolder]: 10/148 cut-off events.
[2022-11-25 17:28:14,042 INFO  L131       PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2022-11-25 17:28:14,049 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 10/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 203 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 93. Up to 3 conditions per place. 
[2022-11-25 17:28:14,050 INFO  L82        GeneralOperation]: Start removeDead. Operand has 147 places, 150 transitions, 316 flow
[2022-11-25 17:28:14,061 INFO  L88        GeneralOperation]: Finished RemoveDead, result has has 131 places, 132 transitions, 273 flow
[2022-11-25 17:28:14,066 INFO  L115   etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation.
[2022-11-25 17:28:14,095 INFO  L131   etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 132 transitions, 273 flow
[2022-11-25 17:28:14,101 INFO  L113        LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 132 transitions, 273 flow
[2022-11-25 17:28:14,102 INFO  L73            FinitePrefix]: Start finitePrefix. Operand has 131 places, 132 transitions, 273 flow
[2022-11-25 17:28:14,176 INFO  L130       PetriNetUnfolder]: 8/132 cut-off events.
[2022-11-25 17:28:14,178 INFO  L131       PetriNetUnfolder]: For 1/1 co-relation queries the response was YES.
[2022-11-25 17:28:14,183 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 140 conditions, 132 events. 8/132 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 183 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. 
[2022-11-25 17:28:14,186 INFO  L119        LiptonReduction]: Number of co-enabled transitions 3074
[2022-11-25 17:28:23,421 INFO  L134        LiptonReduction]: Checked pairs total: 6342
[2022-11-25 17:28:23,422 INFO  L136        LiptonReduction]: Total number of compositions: 110
[2022-11-25 17:28:23,439 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-25 17:28:23,446 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;@78832218, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-25 17:28:23,447 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 18 error locations.
[2022-11-25 17:28:23,454 INFO  L130       PetriNetUnfolder]: 2/15 cut-off events.
[2022-11-25 17:28:23,455 INFO  L131       PetriNetUnfolder]: For 1/1 co-relation queries the response was YES.
[2022-11-25 17:28:23,455 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:23,456 INFO  L209   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:23,456 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:23,462 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:23,462 INFO  L85        PathProgramCache]: Analyzing trace with hash -925066225, now seen corresponding path program 1 times
[2022-11-25 17:28:23,474 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:23,475 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830908554]
[2022-11-25 17:28:23,475 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:23,476 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:23,656 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:23,784 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:23,784 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:23,785 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830908554]
[2022-11-25 17:28:23,785 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830908554] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:23,785 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 17:28:23,786 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 17:28:23,787 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532423001]
[2022-11-25 17:28:23,787 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:23,795 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-11-25 17:28:23,795 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:23,829 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-11-25 17:28:23,836 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-25 17:28:23,839 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 140 out of 260
[2022-11-25 17:28:23,843 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 81 flow. Second operand  has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 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)
[2022-11-25 17:28:23,846 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:23,846 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 260
[2022-11-25 17:28:23,848 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:24,036 INFO  L130       PetriNetUnfolder]: 345/594 cut-off events.
[2022-11-25 17:28:24,037 INFO  L131       PetriNetUnfolder]: For 37/37 co-relation queries the response was YES.
[2022-11-25 17:28:24,042 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 594 events. 345/594 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2570 event pairs, 261 based on Foata normal form. 24/419 useless extension candidates. Maximal degree in co-relation 1074. Up to 561 conditions per place. 
[2022-11-25 17:28:24,050 INFO  L137   encePairwiseOnDemand]: 259/260 looper letters, 28 selfloop transitions, 0 changer transitions 0/35 dead transitions.
[2022-11-25 17:28:24,050 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 135 flow
[2022-11-25 17:28:24,052 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-11-25 17:28:24,055 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2022-11-25 17:28:24,072 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 309 transitions.
[2022-11-25 17:28:24,078 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5942307692307692
[2022-11-25 17:28:24,079 INFO  L72            ComplementDD]: Start complementDD. Operand 2 states and 309 transitions.
[2022-11-25 17:28:24,080 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 2 states and 309 transitions.
[2022-11-25 17:28:24,085 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:24,088 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 309 transitions.
[2022-11-25 17:28:24,096 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 3 states, 2 states have (on average 154.5) internal successors, (309), 2 states have internal predecessors, (309), 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)
[2022-11-25 17:28:24,104 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 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)
[2022-11-25 17:28:24,105 INFO  L81            ComplementDD]: Finished complementDD. Result  has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 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)
[2022-11-25 17:28:24,107 INFO  L175             Difference]: Start difference. First operand has 38 places, 36 transitions, 81 flow. Second operand 2 states and 309 transitions.
[2022-11-25 17:28:24,108 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 135 flow
[2022-11-25 17:28:24,112 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places.
[2022-11-25 17:28:24,115 INFO  L231             Difference]: Finished difference. Result has 36 places, 35 transitions, 74 flow
[2022-11-25 17:28:24,117 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=35}
[2022-11-25 17:28:24,124 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places.
[2022-11-25 17:28:24,125 INFO  L495      AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 74 flow
[2022-11-25 17:28:24,125 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 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)
[2022-11-25 17:28:24,125 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:24,127 INFO  L209   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:24,127 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-25 17:28:24,129 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:24,131 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:24,132 INFO  L85        PathProgramCache]: Analyzing trace with hash 1387617488, now seen corresponding path program 1 times
[2022-11-25 17:28:24,132 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:24,132 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060173359]
[2022-11-25 17:28:24,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:24,133 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:24,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:24,336 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:24,337 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:24,337 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060173359]
[2022-11-25 17:28:24,337 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060173359] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:24,338 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 17:28:24,338 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 17:28:24,338 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240166821]
[2022-11-25 17:28:24,338 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:24,340 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-25 17:28:24,340 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:24,341 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-25 17:28:24,342 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-25 17:28:24,391 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 129 out of 260
[2022-11-25 17:28:24,392 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 74 flow. Second operand  has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 17:28:24,393 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:24,393 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 260
[2022-11-25 17:28:24,393 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:24,678 INFO  L130       PetriNetUnfolder]: 696/1187 cut-off events.
[2022-11-25 17:28:24,678 INFO  L131       PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2022-11-25 17:28:24,680 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 1187 events. 696/1187 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5579 event pairs, 71 based on Foata normal form. 12/823 useless extension candidates. Maximal degree in co-relation 2329. Up to 797 conditions per place. 
[2022-11-25 17:28:24,687 INFO  L137   encePairwiseOnDemand]: 248/260 looper letters, 68 selfloop transitions, 12 changer transitions 3/86 dead transitions.
[2022-11-25 17:28:24,687 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 86 transitions, 349 flow
[2022-11-25 17:28:24,687 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-11-25 17:28:24,688 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2022-11-25 17:28:24,690 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 735 transitions.
[2022-11-25 17:28:24,691 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5653846153846154
[2022-11-25 17:28:24,691 INFO  L72            ComplementDD]: Start complementDD. Operand 5 states and 735 transitions.
[2022-11-25 17:28:24,691 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 5 states and 735 transitions.
[2022-11-25 17:28:24,692 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:24,692 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 735 transitions.
[2022-11-25 17:28:24,695 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 6 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 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)
[2022-11-25 17:28:24,699 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 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)
[2022-11-25 17:28:24,700 INFO  L81            ComplementDD]: Finished complementDD. Result  has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 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)
[2022-11-25 17:28:24,700 INFO  L175             Difference]: Start difference. First operand has 36 places, 35 transitions, 74 flow. Second operand 5 states and 735 transitions.
[2022-11-25 17:28:24,701 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 86 transitions, 349 flow
[2022-11-25 17:28:24,702 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 86 transitions, 349 flow, removed 0 selfloop flow, removed 0 redundant places.
[2022-11-25 17:28:24,703 INFO  L231             Difference]: Finished difference. Result has 44 places, 46 transitions, 178 flow
[2022-11-25 17:28:24,704 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=44, PETRI_TRANSITIONS=46}
[2022-11-25 17:28:24,705 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places.
[2022-11-25 17:28:24,705 INFO  L495      AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 178 flow
[2022-11-25 17:28:24,706 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 17:28:24,706 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:24,706 INFO  L209   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:24,706 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-25 17:28:24,707 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:24,707 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:24,708 INFO  L85        PathProgramCache]: Analyzing trace with hash 66473431, now seen corresponding path program 1 times
[2022-11-25 17:28:24,708 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:24,708 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537821727]
[2022-11-25 17:28:24,708 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:24,709 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:24,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:24,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:24,821 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:24,822 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537821727]
[2022-11-25 17:28:24,822 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537821727] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:24,822 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 17:28:24,822 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 17:28:24,823 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247669965]
[2022-11-25 17:28:24,823 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:24,823 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 17:28:24,824 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:24,824 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 17:28:24,825 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 17:28:24,838 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 136 out of 260
[2022-11-25 17:28:24,839 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 178 flow. Second operand  has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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)
[2022-11-25 17:28:24,839 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:24,839 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 260
[2022-11-25 17:28:24,839 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:25,060 INFO  L130       PetriNetUnfolder]: 557/1054 cut-off events.
[2022-11-25 17:28:25,061 INFO  L131       PetriNetUnfolder]: For 324/332 co-relation queries the response was YES.
[2022-11-25 17:28:25,064 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 2688 conditions, 1054 events. 557/1054 cut-off events. For 324/332 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5416 event pairs, 186 based on Foata normal form. 4/796 useless extension candidates. Maximal degree in co-relation 2681. Up to 754 conditions per place. 
[2022-11-25 17:28:25,071 INFO  L137   encePairwiseOnDemand]: 255/260 looper letters, 52 selfloop transitions, 3 changer transitions 0/65 dead transitions.
[2022-11-25 17:28:25,071 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 348 flow
[2022-11-25 17:28:25,072 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 17:28:25,072 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-25 17:28:25,075 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions.
[2022-11-25 17:28:25,075 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5858974358974359
[2022-11-25 17:28:25,076 INFO  L72            ComplementDD]: Start complementDD. Operand 3 states and 457 transitions.
[2022-11-25 17:28:25,076 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions.
[2022-11-25 17:28:25,077 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:25,077 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions.
[2022-11-25 17:28:25,079 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 17:28:25,081 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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)
[2022-11-25 17:28:25,082 INFO  L81            ComplementDD]: Finished complementDD. Result  has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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)
[2022-11-25 17:28:25,082 INFO  L175             Difference]: Start difference. First operand has 44 places, 46 transitions, 178 flow. Second operand 3 states and 457 transitions.
[2022-11-25 17:28:25,083 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 348 flow
[2022-11-25 17:28:25,089 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places.
[2022-11-25 17:28:25,091 INFO  L231             Difference]: Finished difference. Result has 47 places, 48 transitions, 213 flow
[2022-11-25 17:28:25,091 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=47, PETRI_TRANSITIONS=48}
[2022-11-25 17:28:25,093 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places.
[2022-11-25 17:28:25,094 INFO  L495      AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 213 flow
[2022-11-25 17:28:25,095 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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)
[2022-11-25 17:28:25,095 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:25,095 INFO  L209   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:25,095 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-25 17:28:25,096 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:25,096 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:25,096 INFO  L85        PathProgramCache]: Analyzing trace with hash -1512382768, now seen corresponding path program 1 times
[2022-11-25 17:28:25,097 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:25,097 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992305641]
[2022-11-25 17:28:25,097 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:25,098 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:25,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:25,353 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:25,354 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:25,354 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992305641]
[2022-11-25 17:28:25,356 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992305641] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:25,357 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 17:28:25,357 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 17:28:25,357 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354093012]
[2022-11-25 17:28:25,358 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:25,358 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 17:28:25,358 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:25,360 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 17:28:25,361 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 17:28:25,409 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 130 out of 260
[2022-11-25 17:28:25,410 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 213 flow. Second operand  has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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)
[2022-11-25 17:28:25,410 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:25,411 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 260
[2022-11-25 17:28:25,411 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:25,617 INFO  L130       PetriNetUnfolder]: 309/674 cut-off events.
[2022-11-25 17:28:25,621 INFO  L131       PetriNetUnfolder]: For 185/185 co-relation queries the response was YES.
[2022-11-25 17:28:25,623 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 1682 conditions, 674 events. 309/674 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3420 event pairs, 108 based on Foata normal form. 44/622 useless extension candidates. Maximal degree in co-relation 1673. Up to 311 conditions per place. 
[2022-11-25 17:28:25,628 INFO  L137   encePairwiseOnDemand]: 248/260 looper letters, 28 selfloop transitions, 16 changer transitions 0/51 dead transitions.
[2022-11-25 17:28:25,629 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 282 flow
[2022-11-25 17:28:25,632 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 17:28:25,633 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-25 17:28:25,635 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions.
[2022-11-25 17:28:25,635 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5551282051282052
[2022-11-25 17:28:25,635 INFO  L72            ComplementDD]: Start complementDD. Operand 3 states and 433 transitions.
[2022-11-25 17:28:25,636 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions.
[2022-11-25 17:28:25,636 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:25,636 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions.
[2022-11-25 17:28:25,638 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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)
[2022-11-25 17:28:25,640 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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)
[2022-11-25 17:28:25,641 INFO  L81            ComplementDD]: Finished complementDD. Result  has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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)
[2022-11-25 17:28:25,641 INFO  L175             Difference]: Start difference. First operand has 47 places, 48 transitions, 213 flow. Second operand 3 states and 433 transitions.
[2022-11-25 17:28:25,642 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 282 flow
[2022-11-25 17:28:25,651 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 267 flow, removed 6 selfloop flow, removed 1 redundant places.
[2022-11-25 17:28:25,653 INFO  L231             Difference]: Finished difference. Result has 48 places, 42 transitions, 186 flow
[2022-11-25 17:28:25,654 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=48, PETRI_TRANSITIONS=42}
[2022-11-25 17:28:25,655 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places.
[2022-11-25 17:28:25,655 INFO  L495      AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 186 flow
[2022-11-25 17:28:25,656 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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)
[2022-11-25 17:28:25,656 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:25,656 INFO  L209   CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:25,657 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-11-25 17:28:25,657 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:25,658 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:25,658 INFO  L85        PathProgramCache]: Analyzing trace with hash 1657483612, now seen corresponding path program 1 times
[2022-11-25 17:28:25,658 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:25,658 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131652476]
[2022-11-25 17:28:25,658 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:25,659 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:25,679 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:25,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:25,762 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:25,762 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131652476]
[2022-11-25 17:28:25,762 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131652476] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 17:28:25,763 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351486671]
[2022-11-25 17:28:25,763 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:25,763 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 17:28:25,763 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 17:28:25,767 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 17:28:25,772 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-25 17:28:25,899 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:25,902 INFO  L263         TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-11-25 17:28:25,908 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 17:28:25,977 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:25,977 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-25 17:28:25,978 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [351486671] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:25,978 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-25 17:28:25,978 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6
[2022-11-25 17:28:25,978 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508443291]
[2022-11-25 17:28:25,979 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:25,979 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-25 17:28:25,979 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:25,980 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-25 17:28:25,980 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2022-11-25 17:28:26,013 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 128 out of 260
[2022-11-25 17:28:26,015 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 186 flow. Second operand  has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 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)
[2022-11-25 17:28:26,015 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:26,015 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 260
[2022-11-25 17:28:26,016 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:26,332 INFO  L130       PetriNetUnfolder]: 386/777 cut-off events.
[2022-11-25 17:28:26,333 INFO  L131       PetriNetUnfolder]: For 176/176 co-relation queries the response was YES.
[2022-11-25 17:28:26,335 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 777 events. 386/777 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3311 event pairs, 81 based on Foata normal form. 26/715 useless extension candidates. Maximal degree in co-relation 2073. Up to 304 conditions per place. 
[2022-11-25 17:28:26,340 INFO  L137   encePairwiseOnDemand]: 247/260 looper letters, 59 selfloop transitions, 12 changer transitions 7/80 dead transitions.
[2022-11-25 17:28:26,340 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 450 flow
[2022-11-25 17:28:26,341 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-11-25 17:28:26,341 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2022-11-25 17:28:26,344 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 976 transitions.
[2022-11-25 17:28:26,345 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5362637362637362
[2022-11-25 17:28:26,345 INFO  L72            ComplementDD]: Start complementDD. Operand 7 states and 976 transitions.
[2022-11-25 17:28:26,345 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 7 states and 976 transitions.
[2022-11-25 17:28:26,346 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:26,347 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 976 transitions.
[2022-11-25 17:28:26,350 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 8 states, 7 states have (on average 139.42857142857142) internal successors, (976), 7 states have internal predecessors, (976), 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)
[2022-11-25 17:28:26,354 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 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)
[2022-11-25 17:28:26,356 INFO  L81            ComplementDD]: Finished complementDD. Result  has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 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)
[2022-11-25 17:28:26,356 INFO  L175             Difference]: Start difference. First operand has 48 places, 42 transitions, 186 flow. Second operand 7 states and 976 transitions.
[2022-11-25 17:28:26,356 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 450 flow
[2022-11-25 17:28:26,359 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-25 17:28:26,362 INFO  L231             Difference]: Finished difference. Result has 55 places, 45 transitions, 227 flow
[2022-11-25 17:28:26,362 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=227, PETRI_PLACES=55, PETRI_TRANSITIONS=45}
[2022-11-25 17:28:26,363 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places.
[2022-11-25 17:28:26,363 INFO  L495      AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 227 flow
[2022-11-25 17:28:26,364 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 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)
[2022-11-25 17:28:26,364 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:26,365 INFO  L209   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:26,394 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-11-25 17:28:26,572 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 17:28:26,573 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:26,573 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:26,573 INFO  L85        PathProgramCache]: Analyzing trace with hash -682036895, now seen corresponding path program 1 times
[2022-11-25 17:28:26,573 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:26,574 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589149723]
[2022-11-25 17:28:26,574 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:26,574 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:26,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:26,707 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:26,708 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:26,708 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589149723]
[2022-11-25 17:28:26,708 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589149723] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:26,709 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 17:28:26,709 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 17:28:26,709 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547913811]
[2022-11-25 17:28:26,709 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:26,710 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-25 17:28:26,710 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:26,711 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-25 17:28:26,711 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-11-25 17:28:26,762 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 128 out of 260
[2022-11-25 17:28:26,763 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 227 flow. Second operand  has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 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)
[2022-11-25 17:28:26,763 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:26,764 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 260
[2022-11-25 17:28:26,764 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:27,045 INFO  L130       PetriNetUnfolder]: 389/798 cut-off events.
[2022-11-25 17:28:27,046 INFO  L131       PetriNetUnfolder]: For 335/335 co-relation queries the response was YES.
[2022-11-25 17:28:27,049 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 798 events. 389/798 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3560 event pairs, 79 based on Foata normal form. 12/766 useless extension candidates. Maximal degree in co-relation 2219. Up to 311 conditions per place. 
[2022-11-25 17:28:27,054 INFO  L137   encePairwiseOnDemand]: 249/260 looper letters, 60 selfloop transitions, 12 changer transitions 6/80 dead transitions.
[2022-11-25 17:28:27,054 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 484 flow
[2022-11-25 17:28:27,055 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-11-25 17:28:27,055 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2022-11-25 17:28:27,057 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 843 transitions.
[2022-11-25 17:28:27,058 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5403846153846154
[2022-11-25 17:28:27,059 INFO  L72            ComplementDD]: Start complementDD. Operand 6 states and 843 transitions.
[2022-11-25 17:28:27,059 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 6 states and 843 transitions.
[2022-11-25 17:28:27,060 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:27,060 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 843 transitions.
[2022-11-25 17:28:27,063 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 7 states, 6 states have (on average 140.5) internal successors, (843), 6 states have internal predecessors, (843), 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)
[2022-11-25 17:28:27,066 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 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)
[2022-11-25 17:28:27,067 INFO  L81            ComplementDD]: Finished complementDD. Result  has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 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)
[2022-11-25 17:28:27,068 INFO  L175             Difference]: Start difference. First operand has 55 places, 45 transitions, 227 flow. Second operand 6 states and 843 transitions.
[2022-11-25 17:28:27,068 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 484 flow
[2022-11-25 17:28:27,071 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 80 transitions, 474 flow, removed 0 selfloop flow, removed 3 redundant places.
[2022-11-25 17:28:27,073 INFO  L231             Difference]: Finished difference. Result has 59 places, 47 transitions, 271 flow
[2022-11-25 17:28:27,073 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=59, PETRI_TRANSITIONS=47}
[2022-11-25 17:28:27,074 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places.
[2022-11-25 17:28:27,074 INFO  L495      AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 271 flow
[2022-11-25 17:28:27,075 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 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)
[2022-11-25 17:28:27,075 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:27,076 INFO  L209   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:27,076 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-11-25 17:28:27,076 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:27,077 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:27,077 INFO  L85        PathProgramCache]: Analyzing trace with hash 928463265, now seen corresponding path program 1 times
[2022-11-25 17:28:27,077 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:27,078 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871598384]
[2022-11-25 17:28:27,078 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:27,078 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:27,100 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:27,182 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:27,183 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:27,183 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871598384]
[2022-11-25 17:28:27,183 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871598384] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:27,183 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 17:28:27,184 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 17:28:27,184 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554739524]
[2022-11-25 17:28:27,184 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:27,185 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 17:28:27,185 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:27,185 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 17:28:27,186 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 17:28:27,199 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 136 out of 260
[2022-11-25 17:28:27,200 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 271 flow. Second operand  has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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)
[2022-11-25 17:28:27,201 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:27,201 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 260
[2022-11-25 17:28:27,201 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:27,408 INFO  L130       PetriNetUnfolder]: 334/743 cut-off events.
[2022-11-25 17:28:27,408 INFO  L131       PetriNetUnfolder]: For 642/646 co-relation queries the response was YES.
[2022-11-25 17:28:27,411 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 743 events. 334/743 cut-off events. For 642/646 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3495 event pairs, 190 based on Foata normal form. 18/709 useless extension candidates. Maximal degree in co-relation 2131. Up to 496 conditions per place. 
[2022-11-25 17:28:27,416 INFO  L137   encePairwiseOnDemand]: 255/260 looper letters, 49 selfloop transitions, 2 changer transitions 0/62 dead transitions.
[2022-11-25 17:28:27,416 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 441 flow
[2022-11-25 17:28:27,416 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 17:28:27,417 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-25 17:28:27,418 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions.
[2022-11-25 17:28:27,419 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5820512820512821
[2022-11-25 17:28:27,419 INFO  L72            ComplementDD]: Start complementDD. Operand 3 states and 454 transitions.
[2022-11-25 17:28:27,423 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions.
[2022-11-25 17:28:27,424 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:27,424 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions.
[2022-11-25 17:28:27,426 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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)
[2022-11-25 17:28:27,428 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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)
[2022-11-25 17:28:27,429 INFO  L81            ComplementDD]: Finished complementDD. Result  has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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)
[2022-11-25 17:28:27,429 INFO  L175             Difference]: Start difference. First operand has 59 places, 47 transitions, 271 flow. Second operand 3 states and 454 transitions.
[2022-11-25 17:28:27,429 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 441 flow
[2022-11-25 17:28:27,432 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 419 flow, removed 1 selfloop flow, removed 4 redundant places.
[2022-11-25 17:28:27,435 INFO  L231             Difference]: Finished difference. Result has 58 places, 48 transitions, 270 flow
[2022-11-25 17:28:27,436 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=58, PETRI_TRANSITIONS=48}
[2022-11-25 17:28:27,437 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places.
[2022-11-25 17:28:27,438 INFO  L495      AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 270 flow
[2022-11-25 17:28:27,438 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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)
[2022-11-25 17:28:27,440 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:27,440 INFO  L209   CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:27,440 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-11-25 17:28:27,441 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:27,441 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:27,441 INFO  L85        PathProgramCache]: Analyzing trace with hash -861988353, now seen corresponding path program 1 times
[2022-11-25 17:28:27,443 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:27,443 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103580065]
[2022-11-25 17:28:27,443 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:27,445 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:27,489 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:27,699 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:27,699 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:27,699 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103580065]
[2022-11-25 17:28:27,700 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103580065] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:27,700 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 17:28:27,700 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-25 17:28:27,700 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635946119]
[2022-11-25 17:28:27,701 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:27,702 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-11-25 17:28:27,702 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:27,703 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-11-25 17:28:27,703 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2022-11-25 17:28:27,773 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 124 out of 260
[2022-11-25 17:28:27,775 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 270 flow. Second operand  has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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)
[2022-11-25 17:28:27,775 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:27,775 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 260
[2022-11-25 17:28:27,775 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:28,206 INFO  L130       PetriNetUnfolder]: 515/1048 cut-off events.
[2022-11-25 17:28:28,206 INFO  L131       PetriNetUnfolder]: For 809/809 co-relation queries the response was YES.
[2022-11-25 17:28:28,210 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 3165 conditions, 1048 events. 515/1048 cut-off events. For 809/809 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4802 event pairs, 87 based on Foata normal form. 20/1000 useless extension candidates. Maximal degree in co-relation 3151. Up to 299 conditions per place. 
[2022-11-25 17:28:28,216 INFO  L137   encePairwiseOnDemand]: 244/260 looper letters, 77 selfloop transitions, 20 changer transitions 3/102 dead transitions.
[2022-11-25 17:28:28,217 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 102 transitions, 658 flow
[2022-11-25 17:28:28,217 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-11-25 17:28:28,218 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2022-11-25 17:28:28,221 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1213 transitions.
[2022-11-25 17:28:28,222 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5183760683760684
[2022-11-25 17:28:28,223 INFO  L72            ComplementDD]: Start complementDD. Operand 9 states and 1213 transitions.
[2022-11-25 17:28:28,223 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 9 states and 1213 transitions.
[2022-11-25 17:28:28,224 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:28,224 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1213 transitions.
[2022-11-25 17:28:28,227 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 10 states, 9 states have (on average 134.77777777777777) internal successors, (1213), 9 states have internal predecessors, (1213), 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)
[2022-11-25 17:28:28,235 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 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)
[2022-11-25 17:28:28,237 INFO  L81            ComplementDD]: Finished complementDD. Result  has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 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)
[2022-11-25 17:28:28,237 INFO  L175             Difference]: Start difference. First operand has 58 places, 48 transitions, 270 flow. Second operand 9 states and 1213 transitions.
[2022-11-25 17:28:28,237 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 102 transitions, 658 flow
[2022-11-25 17:28:28,242 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 102 transitions, 653 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-25 17:28:28,245 INFO  L231             Difference]: Finished difference. Result has 68 places, 56 transitions, 388 flow
[2022-11-25 17:28:28,246 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=388, PETRI_PLACES=68, PETRI_TRANSITIONS=56}
[2022-11-25 17:28:28,250 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places.
[2022-11-25 17:28:28,251 INFO  L495      AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 388 flow
[2022-11-25 17:28:28,252 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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)
[2022-11-25 17:28:28,252 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:28,252 INFO  L209   CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:28,252 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-11-25 17:28:28,257 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:28,258 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:28,258 INFO  L85        PathProgramCache]: Analyzing trace with hash 260189723, now seen corresponding path program 1 times
[2022-11-25 17:28:28,258 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:28,259 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173314277]
[2022-11-25 17:28:28,259 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:28,259 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:28,290 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:28,442 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:28,443 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:28,446 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173314277]
[2022-11-25 17:28:28,450 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173314277] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 17:28:28,451 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914984661]
[2022-11-25 17:28:28,451 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:28,451 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 17:28:28,452 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 17:28:28,455 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 17:28:28,490 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-25 17:28:28,626 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:28,628 INFO  L263         TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-11-25 17:28:28,631 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 17:28:28,691 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:28,692 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-11-25 17:28:28,780 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:28,781 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914984661] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-25 17:28:28,781 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-25 17:28:28,781 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10
[2022-11-25 17:28:28,782 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463375861]
[2022-11-25 17:28:28,782 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-25 17:28:28,782 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-25 17:28:28,783 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:28,783 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-25 17:28:28,783 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132
[2022-11-25 17:28:28,891 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 124 out of 260
[2022-11-25 17:28:28,893 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 388 flow. Second operand  has 12 states, 12 states have (on average 128.0) internal successors, (1536), 12 states have internal predecessors, (1536), 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)
[2022-11-25 17:28:28,893 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:28,893 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 260
[2022-11-25 17:28:28,893 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:29,322 INFO  L130       PetriNetUnfolder]: 526/1089 cut-off events.
[2022-11-25 17:28:29,323 INFO  L131       PetriNetUnfolder]: For 1579/1579 co-relation queries the response was YES.
[2022-11-25 17:28:29,327 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 3581 conditions, 1089 events. 526/1089 cut-off events. For 1579/1579 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5181 event pairs, 77 based on Foata normal form. 58/1079 useless extension candidates. Maximal degree in co-relation 3565. Up to 378 conditions per place. 
[2022-11-25 17:28:29,334 INFO  L137   encePairwiseOnDemand]: 241/260 looper letters, 54 selfloop transitions, 34 changer transitions 3/93 dead transitions.
[2022-11-25 17:28:29,334 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 674 flow
[2022-11-25 17:28:29,335 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-11-25 17:28:29,335 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2022-11-25 17:28:29,338 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1194 transitions.
[2022-11-25 17:28:29,340 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5102564102564102
[2022-11-25 17:28:29,340 INFO  L72            ComplementDD]: Start complementDD. Operand 9 states and 1194 transitions.
[2022-11-25 17:28:29,340 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 9 states and 1194 transitions.
[2022-11-25 17:28:29,341 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:29,342 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1194 transitions.
[2022-11-25 17:28:29,345 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 10 states, 9 states have (on average 132.66666666666666) internal successors, (1194), 9 states have internal predecessors, (1194), 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)
[2022-11-25 17:28:29,350 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 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)
[2022-11-25 17:28:29,352 INFO  L81            ComplementDD]: Finished complementDD. Result  has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 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)
[2022-11-25 17:28:29,352 INFO  L175             Difference]: Start difference. First operand has 68 places, 56 transitions, 388 flow. Second operand 9 states and 1194 transitions.
[2022-11-25 17:28:29,352 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 674 flow
[2022-11-25 17:28:29,359 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 93 transitions, 661 flow, removed 0 selfloop flow, removed 4 redundant places.
[2022-11-25 17:28:29,363 INFO  L231             Difference]: Finished difference. Result has 69 places, 55 transitions, 450 flow
[2022-11-25 17:28:29,363 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=450, PETRI_PLACES=69, PETRI_TRANSITIONS=55}
[2022-11-25 17:28:29,364 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places.
[2022-11-25 17:28:29,364 INFO  L495      AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 450 flow
[2022-11-25 17:28:29,367 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 128.0) internal successors, (1536), 12 states have internal predecessors, (1536), 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)
[2022-11-25 17:28:29,367 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:29,368 INFO  L209   CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:29,381 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-25 17:28:29,575 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 17:28:29,575 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:29,576 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:29,576 INFO  L85        PathProgramCache]: Analyzing trace with hash 928922627, now seen corresponding path program 1 times
[2022-11-25 17:28:29,577 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:29,577 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207959720]
[2022-11-25 17:28:29,577 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:29,577 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:29,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:29,672 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:29,673 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:29,673 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207959720]
[2022-11-25 17:28:29,673 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207959720] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:29,673 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 17:28:29,674 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 17:28:29,674 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691165659]
[2022-11-25 17:28:29,674 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:29,675 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 17:28:29,675 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:29,675 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 17:28:29,676 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 17:28:29,686 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 136 out of 260
[2022-11-25 17:28:29,688 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 450 flow. Second operand  has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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)
[2022-11-25 17:28:29,688 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:29,688 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 260
[2022-11-25 17:28:29,688 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:29,942 INFO  L130       PetriNetUnfolder]: 428/925 cut-off events.
[2022-11-25 17:28:29,942 INFO  L131       PetriNetUnfolder]: For 1504/1506 co-relation queries the response was YES.
[2022-11-25 17:28:29,946 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 925 events. 428/925 cut-off events. For 1504/1506 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4424 event pairs, 124 based on Foata normal form. 2/875 useless extension candidates. Maximal degree in co-relation 3277. Up to 780 conditions per place. 
[2022-11-25 17:28:29,952 INFO  L137   encePairwiseOnDemand]: 258/260 looper letters, 45 selfloop transitions, 1 changer transitions 0/59 dead transitions.
[2022-11-25 17:28:29,952 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 538 flow
[2022-11-25 17:28:29,953 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 17:28:29,953 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-25 17:28:29,954 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions.
[2022-11-25 17:28:29,955 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5641025641025641
[2022-11-25 17:28:29,955 INFO  L72            ComplementDD]: Start complementDD. Operand 3 states and 440 transitions.
[2022-11-25 17:28:29,955 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions.
[2022-11-25 17:28:29,955 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:29,956 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions.
[2022-11-25 17:28:29,957 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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)
[2022-11-25 17:28:29,960 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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)
[2022-11-25 17:28:29,960 INFO  L81            ComplementDD]: Finished complementDD. Result  has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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)
[2022-11-25 17:28:29,961 INFO  L175             Difference]: Start difference. First operand has 69 places, 55 transitions, 450 flow. Second operand 3 states and 440 transitions.
[2022-11-25 17:28:29,961 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 538 flow
[2022-11-25 17:28:29,968 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 483 flow, removed 5 selfloop flow, removed 7 redundant places.
[2022-11-25 17:28:29,972 INFO  L231             Difference]: Finished difference. Result has 63 places, 53 transitions, 375 flow
[2022-11-25 17:28:29,974 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=63, PETRI_TRANSITIONS=53}
[2022-11-25 17:28:29,975 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places.
[2022-11-25 17:28:29,975 INFO  L495      AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 375 flow
[2022-11-25 17:28:29,975 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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)
[2022-11-25 17:28:29,975 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:29,976 INFO  L209   CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:29,976 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-11-25 17:28:29,977 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:29,977 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:29,977 INFO  L85        PathProgramCache]: Analyzing trace with hash 1903739507, now seen corresponding path program 1 times
[2022-11-25 17:28:29,977 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:29,978 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118470669]
[2022-11-25 17:28:29,978 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:29,978 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:30,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:30,072 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-11-25 17:28:30,073 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:30,079 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118470669]
[2022-11-25 17:28:30,080 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118470669] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:30,080 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 17:28:30,080 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 17:28:30,081 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758992451]
[2022-11-25 17:28:30,081 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:30,081 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 17:28:30,082 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:30,082 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 17:28:30,082 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 17:28:30,094 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 135 out of 260
[2022-11-25 17:28:30,095 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 375 flow. Second operand  has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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)
[2022-11-25 17:28:30,095 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:30,095 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 260
[2022-11-25 17:28:30,095 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:30,313 INFO  L130       PetriNetUnfolder]: 393/836 cut-off events.
[2022-11-25 17:28:30,314 INFO  L131       PetriNetUnfolder]: For 1172/1174 co-relation queries the response was YES.
[2022-11-25 17:28:30,318 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 836 events. 393/836 cut-off events. For 1172/1174 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3739 event pairs, 190 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 2718. Up to 440 conditions per place. 
[2022-11-25 17:28:30,323 INFO  L137   encePairwiseOnDemand]: 256/260 looper letters, 55 selfloop transitions, 5 changer transitions 1/74 dead transitions.
[2022-11-25 17:28:30,323 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 627 flow
[2022-11-25 17:28:30,324 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 17:28:30,324 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-25 17:28:30,325 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions.
[2022-11-25 17:28:30,326 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5705128205128205
[2022-11-25 17:28:30,326 INFO  L72            ComplementDD]: Start complementDD. Operand 3 states and 445 transitions.
[2022-11-25 17:28:30,326 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions.
[2022-11-25 17:28:30,327 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:30,327 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions.
[2022-11-25 17:28:30,328 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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)
[2022-11-25 17:28:30,330 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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)
[2022-11-25 17:28:30,331 INFO  L81            ComplementDD]: Finished complementDD. Result  has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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)
[2022-11-25 17:28:30,331 INFO  L175             Difference]: Start difference. First operand has 63 places, 53 transitions, 375 flow. Second operand 3 states and 445 transitions.
[2022-11-25 17:28:30,332 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 627 flow
[2022-11-25 17:28:30,338 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-25 17:28:30,340 INFO  L231             Difference]: Finished difference. Result has 64 places, 52 transitions, 374 flow
[2022-11-25 17:28:30,341 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=64, PETRI_TRANSITIONS=52}
[2022-11-25 17:28:30,341 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places.
[2022-11-25 17:28:30,341 INFO  L495      AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 374 flow
[2022-11-25 17:28:30,342 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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)
[2022-11-25 17:28:30,342 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:30,342 INFO  L209   CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:30,343 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-11-25 17:28:30,343 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:30,343 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:30,344 INFO  L85        PathProgramCache]: Analyzing trace with hash 647734585, now seen corresponding path program 1 times
[2022-11-25 17:28:30,344 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:30,344 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749457549]
[2022-11-25 17:28:30,344 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:30,344 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:30,379 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:30,440 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-11-25 17:28:30,440 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:30,440 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749457549]
[2022-11-25 17:28:30,441 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749457549] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:30,441 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 17:28:30,441 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 17:28:30,441 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078979385]
[2022-11-25 17:28:30,442 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:30,442 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 17:28:30,442 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:30,443 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 17:28:30,443 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 17:28:30,457 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 135 out of 260
[2022-11-25 17:28:30,458 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 374 flow. Second operand  has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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)
[2022-11-25 17:28:30,458 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:30,458 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 260
[2022-11-25 17:28:30,459 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:30,671 INFO  L130       PetriNetUnfolder]: 358/749 cut-off events.
[2022-11-25 17:28:30,672 INFO  L131       PetriNetUnfolder]: For 1205/1207 co-relation queries the response was YES.
[2022-11-25 17:28:30,675 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 2506 conditions, 749 events. 358/749 cut-off events. For 1205/1207 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3189 event pairs, 88 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 2490. Up to 456 conditions per place. 
[2022-11-25 17:28:30,679 INFO  L137   encePairwiseOnDemand]: 256/260 looper letters, 45 selfloop transitions, 5 changer transitions 0/63 dead transitions.
[2022-11-25 17:28:30,679 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 530 flow
[2022-11-25 17:28:30,680 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 17:28:30,680 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-25 17:28:30,681 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions.
[2022-11-25 17:28:30,682 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5628205128205128
[2022-11-25 17:28:30,682 INFO  L72            ComplementDD]: Start complementDD. Operand 3 states and 439 transitions.
[2022-11-25 17:28:30,682 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions.
[2022-11-25 17:28:30,683 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:30,683 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions.
[2022-11-25 17:28:30,685 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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)
[2022-11-25 17:28:30,686 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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)
[2022-11-25 17:28:30,687 INFO  L81            ComplementDD]: Finished complementDD. Result  has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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)
[2022-11-25 17:28:30,688 INFO  L175             Difference]: Start difference. First operand has 64 places, 52 transitions, 374 flow. Second operand 3 states and 439 transitions.
[2022-11-25 17:28:30,688 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 530 flow
[2022-11-25 17:28:30,694 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-25 17:28:30,695 INFO  L231             Difference]: Finished difference. Result has 65 places, 51 transitions, 369 flow
[2022-11-25 17:28:30,696 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=65, PETRI_TRANSITIONS=51}
[2022-11-25 17:28:30,696 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places.
[2022-11-25 17:28:30,697 INFO  L495      AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 369 flow
[2022-11-25 17:28:30,697 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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)
[2022-11-25 17:28:30,697 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:30,698 INFO  L209   CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:30,698 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-11-25 17:28:30,698 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:30,699 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:30,699 INFO  L85        PathProgramCache]: Analyzing trace with hash -1720633489, now seen corresponding path program 1 times
[2022-11-25 17:28:30,699 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:30,699 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362132880]
[2022-11-25 17:28:30,700 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:30,700 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:30,724 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:30,794 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:30,794 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:30,795 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362132880]
[2022-11-25 17:28:30,795 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362132880] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 17:28:30,795 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478541863]
[2022-11-25 17:28:30,795 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:30,796 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 17:28:30,796 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 17:28:30,797 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 17:28:30,818 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-11-25 17:28:30,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:30,966 INFO  L263         TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-11-25 17:28:30,967 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 17:28:31,011 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:28:31,012 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-25 17:28:31,012 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [478541863] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:31,012 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-25 17:28:31,013 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4
[2022-11-25 17:28:31,016 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215865869]
[2022-11-25 17:28:31,016 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:31,016 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-25 17:28:31,017 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:31,018 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-25 17:28:31,018 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-25 17:28:31,036 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 136 out of 260
[2022-11-25 17:28:31,037 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 369 flow. Second operand  has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 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)
[2022-11-25 17:28:31,038 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:31,038 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 260
[2022-11-25 17:28:31,038 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:31,249 INFO  L130       PetriNetUnfolder]: 327/678 cut-off events.
[2022-11-25 17:28:31,249 INFO  L131       PetriNetUnfolder]: For 1338/1344 co-relation queries the response was YES.
[2022-11-25 17:28:31,252 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 678 events. 327/678 cut-off events. For 1338/1344 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2682 event pairs, 78 based on Foata normal form. 22/696 useless extension candidates. Maximal degree in co-relation 2296. Up to 399 conditions per place. 
[2022-11-25 17:28:31,256 INFO  L137   encePairwiseOnDemand]: 257/260 looper letters, 49 selfloop transitions, 2 changer transitions 6/70 dead transitions.
[2022-11-25 17:28:31,256 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 565 flow
[2022-11-25 17:28:31,257 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-25 17:28:31,257 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2022-11-25 17:28:31,258 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions.
[2022-11-25 17:28:31,259 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5673076923076923
[2022-11-25 17:28:31,259 INFO  L72            ComplementDD]: Start complementDD. Operand 4 states and 590 transitions.
[2022-11-25 17:28:31,259 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions.
[2022-11-25 17:28:31,260 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:31,260 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions.
[2022-11-25 17:28:31,262 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 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)
[2022-11-25 17:28:31,264 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 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)
[2022-11-25 17:28:31,265 INFO  L81            ComplementDD]: Finished complementDD. Result  has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 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)
[2022-11-25 17:28:31,265 INFO  L175             Difference]: Start difference. First operand has 65 places, 51 transitions, 369 flow. Second operand 4 states and 590 transitions.
[2022-11-25 17:28:31,265 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 565 flow
[2022-11-25 17:28:31,271 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 70 transitions, 560 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-25 17:28:31,273 INFO  L231             Difference]: Finished difference. Result has 66 places, 49 transitions, 348 flow
[2022-11-25 17:28:31,273 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=348, PETRI_PLACES=66, PETRI_TRANSITIONS=49}
[2022-11-25 17:28:31,274 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places.
[2022-11-25 17:28:31,274 INFO  L495      AbstractCegarLoop]: Abstraction has has 66 places, 49 transitions, 348 flow
[2022-11-25 17:28:31,275 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 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)
[2022-11-25 17:28:31,275 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:31,275 INFO  L209   CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:31,288 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-11-25 17:28:31,482 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2022-11-25 17:28:31,483 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:31,484 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:31,484 INFO  L85        PathProgramCache]: Analyzing trace with hash -777016051, now seen corresponding path program 2 times
[2022-11-25 17:28:31,484 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:31,485 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616378185]
[2022-11-25 17:28:31,485 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:31,485 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:31,515 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:31,602 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-11-25 17:28:31,603 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:31,603 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616378185]
[2022-11-25 17:28:31,603 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616378185] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:31,603 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 17:28:31,603 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-25 17:28:31,603 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65269317]
[2022-11-25 17:28:31,604 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:31,604 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-25 17:28:31,604 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:31,605 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-25 17:28:31,605 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-11-25 17:28:31,650 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 129 out of 260
[2022-11-25 17:28:31,651 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 49 transitions, 348 flow. Second operand  has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 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)
[2022-11-25 17:28:31,651 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:31,651 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 260
[2022-11-25 17:28:31,651 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:31,980 INFO  L130       PetriNetUnfolder]: 397/794 cut-off events.
[2022-11-25 17:28:31,980 INFO  L131       PetriNetUnfolder]: For 1341/1341 co-relation queries the response was YES.
[2022-11-25 17:28:31,984 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 794 events. 397/794 cut-off events. For 1341/1341 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3125 event pairs, 83 based on Foata normal form. 8/802 useless extension candidates. Maximal degree in co-relation 2682. Up to 292 conditions per place. 
[2022-11-25 17:28:31,988 INFO  L137   encePairwiseOnDemand]: 252/260 looper letters, 58 selfloop transitions, 15 changer transitions 8/83 dead transitions.
[2022-11-25 17:28:31,989 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 641 flow
[2022-11-25 17:28:31,989 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-11-25 17:28:31,989 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2022-11-25 17:28:31,992 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 837 transitions.
[2022-11-25 17:28:31,993 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5365384615384615
[2022-11-25 17:28:31,993 INFO  L72            ComplementDD]: Start complementDD. Operand 6 states and 837 transitions.
[2022-11-25 17:28:31,993 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 6 states and 837 transitions.
[2022-11-25 17:28:31,994 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:31,994 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 837 transitions.
[2022-11-25 17:28:31,997 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 7 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 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)
[2022-11-25 17:28:32,001 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 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)
[2022-11-25 17:28:32,003 INFO  L81            ComplementDD]: Finished complementDD. Result  has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 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)
[2022-11-25 17:28:32,003 INFO  L175             Difference]: Start difference. First operand has 66 places, 49 transitions, 348 flow. Second operand 6 states and 837 transitions.
[2022-11-25 17:28:32,003 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 641 flow
[2022-11-25 17:28:32,010 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 632 flow, removed 0 selfloop flow, removed 2 redundant places.
[2022-11-25 17:28:32,013 INFO  L231             Difference]: Finished difference. Result has 70 places, 49 transitions, 384 flow
[2022-11-25 17:28:32,014 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=70, PETRI_TRANSITIONS=49}
[2022-11-25 17:28:32,015 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places.
[2022-11-25 17:28:32,015 INFO  L495      AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 384 flow
[2022-11-25 17:28:32,015 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 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)
[2022-11-25 17:28:32,016 INFO  L201   CegarLoopForPetriNet]: Found error trace
[2022-11-25 17:28:32,016 INFO  L209   CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:32,016 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-11-25 17:28:32,017 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] ===
[2022-11-25 17:28:32,017 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:28:32,017 INFO  L85        PathProgramCache]: Analyzing trace with hash 1269894855, now seen corresponding path program 3 times
[2022-11-25 17:28:32,018 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:28:32,018 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039134606]
[2022-11-25 17:28:32,018 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:28:32,019 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:28:32,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:28:32,329 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-11-25 17:28:32,329 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:28:32,329 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039134606]
[2022-11-25 17:28:32,330 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039134606] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 17:28:32,330 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687423273]
[2022-11-25 17:28:32,330 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-11-25 17:28:32,330 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 17:28:32,330 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 17:28:32,332 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 17:28:32,361 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-11-25 17:28:32,560 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2022-11-25 17:28:32,560 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-25 17:28:32,563 INFO  L263         TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-11-25 17:28:32,565 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 17:28:32,617 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-11-25 17:28:32,617 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-25 17:28:32,617 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687423273] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:28:32,617 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-25 17:28:32,618 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10
[2022-11-25 17:28:32,618 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263187142]
[2022-11-25 17:28:32,618 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:28:32,618 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-25 17:28:32,619 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:28:32,619 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-25 17:28:32,619 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2022-11-25 17:28:32,659 INFO  L478   CegarLoopForPetriNet]: Number of universal loopers: 130 out of 260
[2022-11-25 17:28:32,660 INFO  L100   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 384 flow. Second operand  has 5 states, 5 states have (on average 134.8) internal successors, (674), 5 states have internal predecessors, (674), 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)
[2022-11-25 17:28:32,661 INFO  L109   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-25 17:28:32,661 INFO  L110   encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 260
[2022-11-25 17:28:32,661 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-25 17:28:32,890 INFO  L130       PetriNetUnfolder]: 307/647 cut-off events.
[2022-11-25 17:28:32,891 INFO  L131       PetriNetUnfolder]: For 1283/1283 co-relation queries the response was YES.
[2022-11-25 17:28:32,894 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 647 events. 307/647 cut-off events. For 1283/1283 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2453 event pairs, 85 based on Foata normal form. 10/655 useless extension candidates. Maximal degree in co-relation 2285. Up to 246 conditions per place. 
[2022-11-25 17:28:32,896 INFO  L137   encePairwiseOnDemand]: 254/260 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions.
[2022-11-25 17:28:32,896 INFO  L142   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 69 transitions, 564 flow
[2022-11-25 17:28:32,896 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-11-25 17:28:32,897 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2022-11-25 17:28:32,899 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 825 transitions.
[2022-11-25 17:28:32,899 INFO  L523   CegarLoopForPetriNet]: DFA transition density 0.5288461538461539
[2022-11-25 17:28:32,900 INFO  L72            ComplementDD]: Start complementDD. Operand 6 states and 825 transitions.
[2022-11-25 17:28:32,900 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 6 states and 825 transitions.
[2022-11-25 17:28:32,901 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-25 17:28:32,901 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 825 transitions.
[2022-11-25 17:28:32,903 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 7 states, 6 states have (on average 137.5) internal successors, (825), 6 states have internal predecessors, (825), 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)
[2022-11-25 17:28:32,906 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 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)
[2022-11-25 17:28:32,907 INFO  L81            ComplementDD]: Finished complementDD. Result  has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 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)
[2022-11-25 17:28:32,908 INFO  L175             Difference]: Start difference. First operand has 70 places, 49 transitions, 384 flow. Second operand 6 states and 825 transitions.
[2022-11-25 17:28:32,908 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 69 transitions, 564 flow
[2022-11-25 17:28:32,914 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 531 flow, removed 0 selfloop flow, removed 5 redundant places.
[2022-11-25 17:28:32,915 INFO  L231             Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow
[2022-11-25 17:28:32,915 INFO  L271   CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0}
[2022-11-25 17:28:32,916 INFO  L288   CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places.
[2022-11-25 17:28:32,916 INFO  L495      AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow
[2022-11-25 17:28:32,917 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 134.8) internal successors, (674), 5 states have internal predecessors, (674), 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)
[2022-11-25 17:28:32,920 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining)
[2022-11-25 17:28:32,921 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining)
[2022-11-25 17:28:32,921 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining)
[2022-11-25 17:28:32,921 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining)
[2022-11-25 17:28:32,921 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining)
[2022-11-25 17:28:32,922 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining)
[2022-11-25 17:28:32,922 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining)
[2022-11-25 17:28:32,922 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining)
[2022-11-25 17:28:32,922 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining)
[2022-11-25 17:28:32,922 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining)
[2022-11-25 17:28:32,923 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining)
[2022-11-25 17:28:32,923 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining)
[2022-11-25 17:28:32,923 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining)
[2022-11-25 17:28:32,923 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining)
[2022-11-25 17:28:32,923 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining)
[2022-11-25 17:28:32,924 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining)
[2022-11-25 17:28:32,924 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining)
[2022-11-25 17:28:32,924 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining)
[2022-11-25 17:28:32,933 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-11-25 17:28:33,133 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2022-11-25 17:28:33,133 INFO  L445         BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 17:28:33,140 INFO  L228   ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2022-11-25 17:28:33,140 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2022-11-25 17:28:33,147 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:28:33 BasicIcfg
[2022-11-25 17:28:33,147 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-11-25 17:28:33,148 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2022-11-25 17:28:33,148 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2022-11-25 17:28:33,149 INFO  L275        PluginConnector]: Witness Printer initialized
[2022-11-25 17:28:33,149 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:28:13" (3/4) ...
[2022-11-25 17:28:33,153 INFO  L137         WitnessPrinter]: Generating witness for correct program
[2022-11-25 17:28:33,161 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure thread1
[2022-11-25 17:28:33,161 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure thread2
[2022-11-25 17:28:33,169 INFO  L915   BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges
[2022-11-25 17:28:33,169 INFO  L915   BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2022-11-25 17:28:33,170 INFO  L915   BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2022-11-25 17:28:33,170 INFO  L915   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2022-11-25 17:28:33,222 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/witness.graphml
[2022-11-25 17:28:33,222 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2022-11-25 17:28:33,223 INFO  L158              Benchmark]: Toolchain (without parser) took 21693.53ms. Allocated memory was 182.5MB in the beginning and 264.2MB in the end (delta: 81.8MB). Free memory was 150.8MB in the beginning and 95.8MB in the end (delta: 55.0MB). Peak memory consumption was 138.3MB. Max. memory is 16.1GB.
[2022-11-25 17:28:33,223 INFO  L158              Benchmark]: CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB.
[2022-11-25 17:28:33,224 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1051.58ms. Allocated memory is still 182.5MB. Free memory was 150.3MB in the beginning and 124.0MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
[2022-11-25 17:28:33,224 INFO  L158              Benchmark]: Boogie Procedure Inliner took 98.77ms. Allocated memory is still 182.5MB. Free memory was 124.0MB in the beginning and 121.4MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2022-11-25 17:28:33,225 INFO  L158              Benchmark]: Boogie Preprocessor took 51.29ms. Allocated memory is still 182.5MB. Free memory was 121.4MB in the beginning and 120.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2022-11-25 17:28:33,225 INFO  L158              Benchmark]: RCFGBuilder took 850.09ms. Allocated memory is still 182.5MB. Free memory was 120.0MB in the beginning and 102.6MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB.
[2022-11-25 17:28:33,226 INFO  L158              Benchmark]: TraceAbstraction took 19558.82ms. Allocated memory was 182.5MB in the beginning and 264.2MB in the end (delta: 81.8MB). Free memory was 102.1MB in the beginning and 99.0MB in the end (delta: 3.1MB). Peak memory consumption was 85.8MB. Max. memory is 16.1GB.
[2022-11-25 17:28:33,226 INFO  L158              Benchmark]: Witness Printer took 74.27ms. Allocated memory is still 264.2MB. Free memory was 99.0MB in the beginning and 95.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2022-11-25 17:28:33,229 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 1051.58ms. Allocated memory is still 182.5MB. Free memory was 150.3MB in the beginning and 124.0MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 98.77ms. Allocated memory is still 182.5MB. Free memory was 124.0MB in the beginning and 121.4MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 51.29ms. Allocated memory is still 182.5MB. Free memory was 121.4MB in the beginning and 120.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
 * RCFGBuilder took 850.09ms. Allocated memory is still 182.5MB. Free memory was 120.0MB in the beginning and 102.6MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB.
 * TraceAbstraction took 19558.82ms. Allocated memory was 182.5MB in the beginning and 264.2MB in the end (delta: 81.8MB). Free memory was 102.1MB in the beginning and 99.0MB in the end (delta: 3.1MB). Peak memory consumption was 85.8MB. Max. memory is 16.1GB.
 * Witness Printer took 74.27ms. Allocated memory is still 264.2MB. Free memory was 99.0MB in the beginning and 95.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: PetriNetLargeBlockEncoding benchmarks
    Lipton Reduction Statistics: ReductionTime: 9.3s, 131 PlacesBefore, 38 PlacesAfterwards, 132 TransitionsBefore, 36 TransitionsAfterwards, 3074 CoEnabledTransitionPairs, 7 FixpointIterations, 53 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 110 TotalNumberOfCompositions, 6342 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3702, independent: 3503, independent conditional: 0, independent unconditional: 3503, dependent: 199, dependent conditional: 0, dependent unconditional: 199, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2005, independent: 1956, independent conditional: 0, independent unconditional: 1956, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2005, independent: 1936, independent conditional: 0, independent unconditional: 1936, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 69, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 178, independent: 53, independent conditional: 0, independent unconditional: 53, dependent: 125, dependent conditional: 0, dependent unconditional: 125, unknown: 0, unknown conditional: 0, unknown unconditional: 0]  ], Cache Queries: [ total: 3702, independent: 1547, independent conditional: 0, independent unconditional: 1547, dependent: 150, dependent conditional: 0, dependent unconditional: 150, unknown: 2005, unknown conditional: 0, unknown unconditional: 2005] , Statistics on independence cache: Total cache size (in pairs): 232, Positive cache size: 210, Positive conditional cache size: 0, Positive unconditional cache size: 210, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0
  - PositiveResult [Line: 882]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 882]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 885]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 885]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 897]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 897]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 900]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 900]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
    CFG has 5 procedures, 202 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.2s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 989 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 797 mSDsluCounter, 239 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 180 mSDsCounter, 146 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1747 IncrementalHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 146 mSolverCounterUnsat, 59 mSDtfsCounter, 1747 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=450occurred in iteration=9, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 326 NumberOfCodeBlocks, 326 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 325 ConstructedInterpolants, 0 QuantifiedInterpolants, 791 SizeOfPredicates, 9 NumberOfNonLiveVariables, 997 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 59/79 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    8 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2022-11-25 17:28:33,267 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e805f824-f0f9-4097-93c5-505c93ea7870/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE