./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4018a1168c08743b2a9b9283b6137e1dcc53bdf8ab8362348f4bbe02762305c3 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:03:01,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:03:01,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:03:01,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:03:01,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:03:01,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:03:01,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:03:01,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:03:01,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:03:01,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:03:01,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:03:01,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:03:01,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:03:01,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:03:01,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:03:01,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:03:01,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:03:01,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:03:01,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:03:01,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:03:01,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:03:01,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:03:01,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:03:01,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:03:01,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:03:01,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:03:01,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:03:01,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:03:01,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:03:02,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:03:02,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:03:02,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:03:02,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:03:02,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:03:02,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:03:02,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:03:02,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:03:02,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:03:02,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:03:02,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:03:02,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:03:02,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:03:02,048 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:03:02,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:03:02,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:03:02,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:03:02,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:03:02,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:03:02,052 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:03:02,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:03:02,053 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:03:02,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:03:02,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:03:02,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:03:02,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:03:02,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:03:02,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:03:02,055 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:03:02,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:03:02,055 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:03:02,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:03:02,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:03:02,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:03:02,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:03:02,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:03:02,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:03:02,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:03:02,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:03:02,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:03:02,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:03:02,059 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:03:02,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:03:02,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:03:02,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:03:02,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4018a1168c08743b2a9b9283b6137e1dcc53bdf8ab8362348f4bbe02762305c3 [2021-10-28 09:03:02,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:03:02,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:03:02,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:03:02,371 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:03:02,372 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:03:02,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2021-10-28 09:03:02,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/data/ce8ee4b42/c4eaf00fc05844cf9a017ec48dc0a7c2/FLAG9112d6bf8 [2021-10-28 09:03:03,090 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:03:03,091 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2021-10-28 09:03:03,101 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/data/ce8ee4b42/c4eaf00fc05844cf9a017ec48dc0a7c2/FLAG9112d6bf8 [2021-10-28 09:03:03,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/data/ce8ee4b42/c4eaf00fc05844cf9a017ec48dc0a7c2 [2021-10-28 09:03:03,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:03:03,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:03:03,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:03:03,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:03:03,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:03:03,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:03:03" (1/1) ... [2021-10-28 09:03:03,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3b970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:03, skipping insertion in model container [2021-10-28 09:03:03,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:03:03" (1/1) ... [2021-10-28 09:03:03,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:03:03,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:03:03,720 WARN L228 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_179f2637-9371-4e5f-9e69-67f3ce5cb554/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c[2525,2538] [2021-10-28 09:03:03,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:03:03,744 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:03:03,783 WARN L228 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_179f2637-9371-4e5f-9e69-67f3ce5cb554/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c[2525,2538] [2021-10-28 09:03:03,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:03:03,822 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:03:03,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:03 WrapperNode [2021-10-28 09:03:03,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:03:03,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:03:03,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:03:03,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:03:03,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:03" (1/1) ... [2021-10-28 09:03:03,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:03" (1/1) ... [2021-10-28 09:03:03,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:03:03,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:03:03,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:03:03,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:03:03,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:03" (1/1) ... [2021-10-28 09:03:03,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:03" (1/1) ... [2021-10-28 09:03:03,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:03" (1/1) ... [2021-10-28 09:03:03,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:03" (1/1) ... [2021-10-28 09:03:03,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:03" (1/1) ... [2021-10-28 09:03:03,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:03" (1/1) ... [2021-10-28 09:03:03,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:03" (1/1) ... [2021-10-28 09:03:03,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:03:03,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:03:03,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:03:03,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:03:03,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:03" (1/1) ... [2021-10-28 09:03:03,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:03:04,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:04,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:04,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:03:04,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 09:03:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 09:03:04,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 09:03:04,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 09:03:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-28 09:03:04,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-28 09:03:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:03:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:03:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:03:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 09:03:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 09:03:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:03:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:03:04,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:03:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:03:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:03:04,089 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:03:05,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:03:05,018 INFO L299 CfgBuilder]: Removed 36 assume(true) statements. [2021-10-28 09:03:05,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:03:05 BoogieIcfgContainer [2021-10-28 09:03:05,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:03:05,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:03:05,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:03:05,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:03:05,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:03:03" (1/3) ... [2021-10-28 09:03:05,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e544755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:03:05, skipping insertion in model container [2021-10-28 09:03:05,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:03" (2/3) ... [2021-10-28 09:03:05,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e544755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:03:05, skipping insertion in model container [2021-10-28 09:03:05,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:03:05" (3/3) ... [2021-10-28 09:03:05,036 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2021-10-28 09:03:05,042 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:03:05,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:03:05,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:03:05,043 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:03:05,081 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,081 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,082 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,082 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,082 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,082 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,083 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,083 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,083 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,083 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,083 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,084 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,084 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,084 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,084 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,084 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,084 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,085 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,085 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,085 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,085 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,085 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,086 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,086 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,086 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,086 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,086 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,086 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,087 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,087 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,087 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,087 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,088 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,088 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,088 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,088 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,088 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,089 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,089 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,089 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,089 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,090 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,090 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,090 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,090 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,091 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,091 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,091 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,091 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,091 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,091 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,092 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,092 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,092 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,092 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,092 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,092 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,093 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,093 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,093 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,093 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,093 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,094 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,094 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,094 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,094 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,094 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,094 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,095 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,095 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,095 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,095 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,096 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,096 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,096 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,096 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,096 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,096 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,097 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,097 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,097 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,098 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,098 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,098 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,098 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,098 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,099 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,099 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,099 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,099 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,099 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,100 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,100 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,100 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,100 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,100 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,100 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,100 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,101 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,101 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,101 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,101 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,102 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,102 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,102 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,102 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,102 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,102 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,102 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,103 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,103 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,103 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,103 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,104 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,104 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,104 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,104 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,104 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,104 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,105 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,108 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,108 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,108 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,109 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,110 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,110 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,110 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,110 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,110 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,112 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,113 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,114 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,115 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,115 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,116 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,117 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,117 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,117 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,117 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,117 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,118 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,118 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,118 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,118 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,118 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,119 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,119 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:03:05,127 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-28 09:03:05,196 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:03:05,206 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:03:05,206 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 09:03:05,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 137 places, 139 transitions, 302 flow [2021-10-28 09:03:05,299 INFO L129 PetriNetUnfolder]: 12/136 cut-off events. [2021-10-28 09:03:05,300 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 09:03:05,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 12/136 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 91 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2021-10-28 09:03:05,306 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 139 transitions, 302 flow [2021-10-28 09:03:05,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 126 transitions, 270 flow [2021-10-28 09:03:05,380 INFO L129 PetriNetUnfolder]: 12/125 cut-off events. [2021-10-28 09:03:05,380 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 09:03:05,380 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:03:05,381 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:05,382 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:03:05,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:05,399 INFO L85 PathProgramCache]: Analyzing trace with hash 824894670, now seen corresponding path program 1 times [2021-10-28 09:03:05,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:05,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477237411] [2021-10-28 09:03:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:05,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:05,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:05,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477237411] [2021-10-28 09:03:05,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477237411] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:05,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:05,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:03:05,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868664307] [2021-10-28 09:03:05,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:03:05,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:05,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:03:05,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:03:05,731 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 139 [2021-10-28 09:03:05,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 126 transitions, 270 flow. Second operand has 2 states, 2 states have (on average 131.0) internal successors, (262), 2 states have internal predecessors, (262), 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) [2021-10-28 09:03:05,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:03:05,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 139 [2021-10-28 09:03:05,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:03:05,812 INFO L129 PetriNetUnfolder]: 4/118 cut-off events. [2021-10-28 09:03:05,812 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 09:03:05,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 118 events. 4/118 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 84 event pairs, 0 based on Foata normal form. 8/118 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2021-10-28 09:03:05,819 INFO L132 encePairwiseOnDemand]: 131/139 looper letters, 0 selfloop transitions, 0 changer transitions 4/118 dead transitions. [2021-10-28 09:03:05,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 118 transitions, 254 flow [2021-10-28 09:03:05,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:03:05,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-28 09:03:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 268 transitions. [2021-10-28 09:03:05,845 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9640287769784173 [2021-10-28 09:03:05,846 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 268 transitions. [2021-10-28 09:03:05,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 268 transitions. [2021-10-28 09:03:05,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:05,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 268 transitions. [2021-10-28 09:03:05,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 134.0) internal successors, (268), 2 states have internal predecessors, (268), 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) [2021-10-28 09:03:05,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2021-10-28 09:03:05,880 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2021-10-28 09:03:05,887 INFO L186 Difference]: Start difference. First operand has 124 places, 126 transitions, 270 flow. Second operand 2 states and 268 transitions. [2021-10-28 09:03:05,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 118 transitions, 254 flow [2021-10-28 09:03:05,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 118 transitions, 242 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-28 09:03:05,905 INFO L242 Difference]: Finished difference. Result has 119 places, 114 transitions, 234 flow [2021-10-28 09:03:05,908 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=234, PETRI_PLACES=119, PETRI_TRANSITIONS=114} [2021-10-28 09:03:05,909 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, -5 predicate places. [2021-10-28 09:03:05,910 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 114 transitions, 234 flow [2021-10-28 09:03:05,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 131.0) internal successors, (262), 2 states have internal predecessors, (262), 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) [2021-10-28 09:03:05,911 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:03:05,918 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:05,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:03:05,920 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:03:05,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:05,921 INFO L85 PathProgramCache]: Analyzing trace with hash 404467584, now seen corresponding path program 1 times [2021-10-28 09:03:05,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:05,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080746431] [2021-10-28 09:03:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:05,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:06,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:06,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080746431] [2021-10-28 09:03:06,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080746431] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:06,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:06,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:03:06,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975811] [2021-10-28 09:03:06,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:03:06,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:06,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:03:06,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:03:06,302 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 139 [2021-10-28 09:03:06,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 114 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 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) [2021-10-28 09:03:06,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:03:06,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 139 [2021-10-28 09:03:06,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:03:06,500 INFO L129 PetriNetUnfolder]: 23/204 cut-off events. [2021-10-28 09:03:06,500 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:03:06,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 204 events. 23/204 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 458 event pairs, 1 based on Foata normal form. 1/186 useless extension candidates. Maximal degree in co-relation 256. Up to 21 conditions per place. [2021-10-28 09:03:06,505 INFO L132 encePairwiseOnDemand]: 131/139 looper letters, 25 selfloop transitions, 6 changer transitions 3/127 dead transitions. [2021-10-28 09:03:06,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 127 transitions, 328 flow [2021-10-28 09:03:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:03:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 09:03:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 665 transitions. [2021-10-28 09:03:06,510 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7973621103117506 [2021-10-28 09:03:06,510 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 665 transitions. [2021-10-28 09:03:06,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 665 transitions. [2021-10-28 09:03:06,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:06,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 665 transitions. [2021-10-28 09:03:06,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 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) [2021-10-28 09:03:06,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2021-10-28 09:03:06,523 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2021-10-28 09:03:06,523 INFO L186 Difference]: Start difference. First operand has 119 places, 114 transitions, 234 flow. Second operand 6 states and 665 transitions. [2021-10-28 09:03:06,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 127 transitions, 328 flow [2021-10-28 09:03:06,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 127 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 09:03:06,534 INFO L242 Difference]: Finished difference. Result has 123 places, 118 transitions, 270 flow [2021-10-28 09:03:06,534 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=123, PETRI_TRANSITIONS=118} [2021-10-28 09:03:06,535 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, -1 predicate places. [2021-10-28 09:03:06,535 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 118 transitions, 270 flow [2021-10-28 09:03:06,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 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) [2021-10-28 09:03:06,536 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:03:06,537 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:06,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:03:06,537 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:03:06,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash 160000904, now seen corresponding path program 1 times [2021-10-28 09:03:06,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:06,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726373225] [2021-10-28 09:03:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:06,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:06,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:06,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726373225] [2021-10-28 09:03:06,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726373225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:06,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:06,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:03:06,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787718820] [2021-10-28 09:03:06,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:03:06,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:06,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:03:06,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:03:06,780 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2021-10-28 09:03:06,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 118 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 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) [2021-10-28 09:03:06,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:03:06,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2021-10-28 09:03:06,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:03:07,049 INFO L129 PetriNetUnfolder]: 107/538 cut-off events. [2021-10-28 09:03:07,050 INFO L130 PetriNetUnfolder]: For 1/4 co-relation queries the response was YES. [2021-10-28 09:03:07,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 538 events. 107/538 cut-off events. For 1/4 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2868 event pairs, 38 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 782. Up to 138 conditions per place. [2021-10-28 09:03:07,063 INFO L132 encePairwiseOnDemand]: 130/139 looper letters, 31 selfloop transitions, 8 changer transitions 0/131 dead transitions. [2021-10-28 09:03:07,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 131 transitions, 375 flow [2021-10-28 09:03:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:03:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:03:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 886 transitions. [2021-10-28 09:03:07,067 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7967625899280576 [2021-10-28 09:03:07,067 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 886 transitions. [2021-10-28 09:03:07,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 886 transitions. [2021-10-28 09:03:07,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:07,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 886 transitions. [2021-10-28 09:03:07,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.75) internal successors, (886), 8 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) [2021-10-28 09:03:07,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 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) [2021-10-28 09:03:07,078 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 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) [2021-10-28 09:03:07,078 INFO L186 Difference]: Start difference. First operand has 123 places, 118 transitions, 270 flow. Second operand 8 states and 886 transitions. [2021-10-28 09:03:07,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 131 transitions, 375 flow [2021-10-28 09:03:07,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 131 transitions, 371 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-10-28 09:03:07,088 INFO L242 Difference]: Finished difference. Result has 129 places, 121 transitions, 302 flow [2021-10-28 09:03:07,088 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=302, PETRI_PLACES=129, PETRI_TRANSITIONS=121} [2021-10-28 09:03:07,089 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 5 predicate places. [2021-10-28 09:03:07,090 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 121 transitions, 302 flow [2021-10-28 09:03:07,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 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) [2021-10-28 09:03:07,091 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:03:07,091 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:07,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:03:07,092 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:03:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:07,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1184740810, now seen corresponding path program 1 times [2021-10-28 09:03:07,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:07,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929242723] [2021-10-28 09:03:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:07,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:07,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:07,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929242723] [2021-10-28 09:03:07,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929242723] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:07,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:07,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:03:07,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993834923] [2021-10-28 09:03:07,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:03:07,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:07,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:03:07,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:03:07,555 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 139 [2021-10-28 09:03:07,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 121 transitions, 302 flow. Second operand has 10 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 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) [2021-10-28 09:03:07,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:03:07,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 139 [2021-10-28 09:03:07,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:03:08,440 INFO L129 PetriNetUnfolder]: 425/1172 cut-off events. [2021-10-28 09:03:08,440 INFO L130 PetriNetUnfolder]: For 115/133 co-relation queries the response was YES. [2021-10-28 09:03:08,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 1172 events. 425/1172 cut-off events. For 115/133 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7546 event pairs, 280 based on Foata normal form. 18/1022 useless extension candidates. Maximal degree in co-relation 2079. Up to 548 conditions per place. [2021-10-28 09:03:08,461 INFO L132 encePairwiseOnDemand]: 127/139 looper letters, 56 selfloop transitions, 11 changer transitions 0/143 dead transitions. [2021-10-28 09:03:08,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 483 flow [2021-10-28 09:03:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:03:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:03:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 991 transitions. [2021-10-28 09:03:08,468 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6481360366252452 [2021-10-28 09:03:08,468 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 991 transitions. [2021-10-28 09:03:08,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 991 transitions. [2021-10-28 09:03:08,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:08,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 991 transitions. [2021-10-28 09:03:08,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 90.0909090909091) internal successors, (991), 11 states have internal predecessors, (991), 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) [2021-10-28 09:03:08,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 139.0) internal successors, (1668), 12 states have internal predecessors, (1668), 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) [2021-10-28 09:03:08,481 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 139.0) internal successors, (1668), 12 states have internal predecessors, (1668), 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) [2021-10-28 09:03:08,482 INFO L186 Difference]: Start difference. First operand has 129 places, 121 transitions, 302 flow. Second operand 11 states and 991 transitions. [2021-10-28 09:03:08,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 483 flow [2021-10-28 09:03:08,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 143 transitions, 473 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 09:03:08,490 INFO L242 Difference]: Finished difference. Result has 140 places, 125 transitions, 341 flow [2021-10-28 09:03:08,490 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=341, PETRI_PLACES=140, PETRI_TRANSITIONS=125} [2021-10-28 09:03:08,491 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 16 predicate places. [2021-10-28 09:03:08,491 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 125 transitions, 341 flow [2021-10-28 09:03:08,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 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) [2021-10-28 09:03:08,492 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:03:08,493 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:08,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:03:08,493 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:03:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:08,494 INFO L85 PathProgramCache]: Analyzing trace with hash -623877128, now seen corresponding path program 1 times [2021-10-28 09:03:08,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:08,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950386786] [2021-10-28 09:03:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:08,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:08,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:08,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950386786] [2021-10-28 09:03:08,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950386786] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:08,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:08,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:03:08,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125421656] [2021-10-28 09:03:08,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:03:08,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:03:08,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:03:08,824 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 139 [2021-10-28 09:03:08,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 125 transitions, 341 flow. Second operand has 11 states, 11 states have (on average 88.18181818181819) internal successors, (970), 11 states have internal predecessors, (970), 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) [2021-10-28 09:03:08,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:03:08,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 139 [2021-10-28 09:03:08,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:03:09,591 INFO L129 PetriNetUnfolder]: 403/944 cut-off events. [2021-10-28 09:03:09,591 INFO L130 PetriNetUnfolder]: For 197/210 co-relation queries the response was YES. [2021-10-28 09:03:09,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 944 events. 403/944 cut-off events. For 197/210 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5151 event pairs, 202 based on Foata normal form. 13/849 useless extension candidates. Maximal degree in co-relation 1891. Up to 473 conditions per place. [2021-10-28 09:03:09,607 INFO L132 encePairwiseOnDemand]: 126/139 looper letters, 43 selfloop transitions, 7 changer transitions 14/140 dead transitions. [2021-10-28 09:03:09,608 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 140 transitions, 500 flow [2021-10-28 09:03:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:03:09,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:03:09,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1082 transitions. [2021-10-28 09:03:09,618 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6486810551558753 [2021-10-28 09:03:09,619 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1082 transitions. [2021-10-28 09:03:09,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1082 transitions. [2021-10-28 09:03:09,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:09,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1082 transitions. [2021-10-28 09:03:09,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 90.16666666666667) internal successors, (1082), 12 states have internal predecessors, (1082), 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) [2021-10-28 09:03:09,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 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) [2021-10-28 09:03:09,631 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 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) [2021-10-28 09:03:09,631 INFO L186 Difference]: Start difference. First operand has 140 places, 125 transitions, 341 flow. Second operand 12 states and 1082 transitions. [2021-10-28 09:03:09,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 140 transitions, 500 flow [2021-10-28 09:03:09,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 140 transitions, 487 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-28 09:03:09,641 INFO L242 Difference]: Finished difference. Result has 148 places, 119 transitions, 308 flow [2021-10-28 09:03:09,641 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=308, PETRI_PLACES=148, PETRI_TRANSITIONS=119} [2021-10-28 09:03:09,642 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 24 predicate places. [2021-10-28 09:03:09,642 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 119 transitions, 308 flow [2021-10-28 09:03:09,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 88.18181818181819) internal successors, (970), 11 states have internal predecessors, (970), 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) [2021-10-28 09:03:09,643 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:03:09,643 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:09,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:03:09,644 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:03:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1815380991, now seen corresponding path program 1 times [2021-10-28 09:03:09,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:09,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667227334] [2021-10-28 09:03:09,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:09,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:09,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:09,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667227334] [2021-10-28 09:03:09,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667227334] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:09,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643742274] [2021-10-28 09:03:09,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:09,852 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:09,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:09,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:09,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:03:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:09,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:03:10,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:10,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643742274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:10,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:10,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-10-28 09:03:10,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587124239] [2021-10-28 09:03:10,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:03:10,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:10,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:03:10,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:03:10,595 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 139 [2021-10-28 09:03:10,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 119 transitions, 308 flow. Second operand has 14 states, 14 states have (on average 99.42857142857143) internal successors, (1392), 14 states have internal predecessors, (1392), 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) [2021-10-28 09:03:10,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:03:10,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 139 [2021-10-28 09:03:10,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:03:11,525 INFO L129 PetriNetUnfolder]: 952/1959 cut-off events. [2021-10-28 09:03:11,525 INFO L130 PetriNetUnfolder]: For 540/540 co-relation queries the response was YES. [2021-10-28 09:03:11,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4368 conditions, 1959 events. 952/1959 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13444 event pairs, 264 based on Foata normal form. 5/1939 useless extension candidates. Maximal degree in co-relation 4352. Up to 465 conditions per place. [2021-10-28 09:03:11,596 INFO L132 encePairwiseOnDemand]: 127/139 looper letters, 70 selfloop transitions, 19 changer transitions 0/172 dead transitions. [2021-10-28 09:03:11,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 172 transitions, 652 flow [2021-10-28 09:03:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:03:11,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:03:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1345 transitions. [2021-10-28 09:03:11,603 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7443276148312119 [2021-10-28 09:03:11,603 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1345 transitions. [2021-10-28 09:03:11,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1345 transitions. [2021-10-28 09:03:11,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:11,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1345 transitions. [2021-10-28 09:03:11,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.46153846153847) internal successors, (1345), 13 states have internal predecessors, (1345), 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) [2021-10-28 09:03:11,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 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) [2021-10-28 09:03:11,620 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 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) [2021-10-28 09:03:11,620 INFO L186 Difference]: Start difference. First operand has 148 places, 119 transitions, 308 flow. Second operand 13 states and 1345 transitions. [2021-10-28 09:03:11,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 172 transitions, 652 flow [2021-10-28 09:03:11,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 172 transitions, 589 flow, removed 24 selfloop flow, removed 14 redundant places. [2021-10-28 09:03:11,637 INFO L242 Difference]: Finished difference. Result has 139 places, 132 transitions, 376 flow [2021-10-28 09:03:11,638 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=376, PETRI_PLACES=139, PETRI_TRANSITIONS=132} [2021-10-28 09:03:11,638 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 15 predicate places. [2021-10-28 09:03:11,638 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 132 transitions, 376 flow [2021-10-28 09:03:11,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 99.42857142857143) internal successors, (1392), 14 states have internal predecessors, (1392), 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) [2021-10-28 09:03:11,640 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:03:11,640 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:11,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:11,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:11,862 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:03:11,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2071782743, now seen corresponding path program 2 times [2021-10-28 09:03:11,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:11,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629090850] [2021-10-28 09:03:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:11,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:03:12,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:12,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629090850] [2021-10-28 09:03:12,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629090850] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:12,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522614942] [2021-10-28 09:03:12,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:03:12,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:12,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:12,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:12,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:03:12,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:03:12,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:12,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:03:12,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:03:12,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522614942] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:12,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:12,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-10-28 09:03:12,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897440869] [2021-10-28 09:03:12,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:03:12,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:12,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:03:12,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:03:12,637 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 139 [2021-10-28 09:03:12,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 132 transitions, 376 flow. Second operand has 15 states, 15 states have (on average 95.46666666666667) internal successors, (1432), 15 states have internal predecessors, (1432), 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) [2021-10-28 09:03:12,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:03:12,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 139 [2021-10-28 09:03:12,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:03:14,588 INFO L129 PetriNetUnfolder]: 2758/5368 cut-off events. [2021-10-28 09:03:14,588 INFO L130 PetriNetUnfolder]: For 2095/2104 co-relation queries the response was YES. [2021-10-28 09:03:14,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12838 conditions, 5368 events. 2758/5368 cut-off events. For 2095/2104 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 39193 event pairs, 438 based on Foata normal form. 12/5079 useless extension candidates. Maximal degree in co-relation 12826. Up to 905 conditions per place. [2021-10-28 09:03:14,741 INFO L132 encePairwiseOnDemand]: 123/139 looper letters, 185 selfloop transitions, 61 changer transitions 0/322 dead transitions. [2021-10-28 09:03:14,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 322 transitions, 1565 flow [2021-10-28 09:03:14,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:03:14,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:03:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1856 transitions. [2021-10-28 09:03:14,750 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7418065547561951 [2021-10-28 09:03:14,750 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1856 transitions. [2021-10-28 09:03:14,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1856 transitions. [2021-10-28 09:03:14,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:14,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1856 transitions. [2021-10-28 09:03:14,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 103.11111111111111) internal successors, (1856), 18 states have internal predecessors, (1856), 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) [2021-10-28 09:03:14,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 139.0) internal successors, (2641), 19 states have internal predecessors, (2641), 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) [2021-10-28 09:03:14,770 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 139.0) internal successors, (2641), 19 states have internal predecessors, (2641), 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) [2021-10-28 09:03:14,770 INFO L186 Difference]: Start difference. First operand has 139 places, 132 transitions, 376 flow. Second operand 18 states and 1856 transitions. [2021-10-28 09:03:14,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 322 transitions, 1565 flow [2021-10-28 09:03:14,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 322 transitions, 1558 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 09:03:14,795 INFO L242 Difference]: Finished difference. Result has 164 places, 185 transitions, 874 flow [2021-10-28 09:03:14,795 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=874, PETRI_PLACES=164, PETRI_TRANSITIONS=185} [2021-10-28 09:03:14,795 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 40 predicate places. [2021-10-28 09:03:14,796 INFO L470 AbstractCegarLoop]: Abstraction has has 164 places, 185 transitions, 874 flow [2021-10-28 09:03:14,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 95.46666666666667) internal successors, (1432), 15 states have internal predecessors, (1432), 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) [2021-10-28 09:03:14,796 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:03:14,797 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:14,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:14,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:14,998 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:03:14,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:14,998 INFO L85 PathProgramCache]: Analyzing trace with hash -594972521, now seen corresponding path program 3 times [2021-10-28 09:03:14,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:14,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13260826] [2021-10-28 09:03:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:14,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:15,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:15,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13260826] [2021-10-28 09:03:15,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13260826] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:15,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998132314] [2021-10-28 09:03:15,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:03:15,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:15,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:15,140 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:15,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:03:15,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:03:15,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:15,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:03:15,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:15,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998132314] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:15,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:15,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-10-28 09:03:15,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174257074] [2021-10-28 09:03:15,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:03:15,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:15,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:03:15,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:03:15,807 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 139 [2021-10-28 09:03:15,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 185 transitions, 874 flow. Second operand has 13 states, 13 states have (on average 99.53846153846153) internal successors, (1294), 13 states have internal predecessors, (1294), 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) [2021-10-28 09:03:15,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:03:15,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 139 [2021-10-28 09:03:15,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:03:17,202 INFO L129 PetriNetUnfolder]: 2327/4755 cut-off events. [2021-10-28 09:03:17,203 INFO L130 PetriNetUnfolder]: For 12177/12255 co-relation queries the response was YES. [2021-10-28 09:03:17,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15939 conditions, 4755 events. 2327/4755 cut-off events. For 12177/12255 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 35085 event pairs, 769 based on Foata normal form. 74/4796 useless extension candidates. Maximal degree in co-relation 15915. Up to 1825 conditions per place. [2021-10-28 09:03:17,379 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 131 selfloop transitions, 36 changer transitions 0/261 dead transitions. [2021-10-28 09:03:17,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 261 transitions, 1739 flow [2021-10-28 09:03:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:03:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:03:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1035 transitions. [2021-10-28 09:03:17,385 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7446043165467626 [2021-10-28 09:03:17,385 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1035 transitions. [2021-10-28 09:03:17,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1035 transitions. [2021-10-28 09:03:17,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:17,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1035 transitions. [2021-10-28 09:03:17,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 103.5) internal successors, (1035), 10 states have internal predecessors, (1035), 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) [2021-10-28 09:03:17,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 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) [2021-10-28 09:03:17,397 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 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) [2021-10-28 09:03:17,397 INFO L186 Difference]: Start difference. First operand has 164 places, 185 transitions, 874 flow. Second operand 10 states and 1035 transitions. [2021-10-28 09:03:17,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 261 transitions, 1739 flow [2021-10-28 09:03:17,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 261 transitions, 1722 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-10-28 09:03:17,480 INFO L242 Difference]: Finished difference. Result has 171 places, 198 transitions, 1105 flow [2021-10-28 09:03:17,481 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1105, PETRI_PLACES=171, PETRI_TRANSITIONS=198} [2021-10-28 09:03:17,481 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 47 predicate places. [2021-10-28 09:03:17,481 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 198 transitions, 1105 flow [2021-10-28 09:03:17,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 99.53846153846153) internal successors, (1294), 13 states have internal predecessors, (1294), 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) [2021-10-28 09:03:17,482 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:03:17,482 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:17,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:17,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 09:03:17,702 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:03:17,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:17,702 INFO L85 PathProgramCache]: Analyzing trace with hash 193046455, now seen corresponding path program 1 times [2021-10-28 09:03:17,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:17,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434263050] [2021-10-28 09:03:17,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:17,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:17,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:17,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434263050] [2021-10-28 09:03:17,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434263050] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:17,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547963760] [2021-10-28 09:03:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:17,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:17,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:17,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:17,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:03:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:18,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:03:18,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:18,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547963760] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:18,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:18,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-10-28 09:03:18,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024443203] [2021-10-28 09:03:18,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:03:18,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:18,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:03:18,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:03:18,511 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2021-10-28 09:03:18,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 198 transitions, 1105 flow. Second operand has 10 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 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) [2021-10-28 09:03:18,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:03:18,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2021-10-28 09:03:18,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:03:19,079 INFO L129 PetriNetUnfolder]: 658/1961 cut-off events. [2021-10-28 09:03:19,080 INFO L130 PetriNetUnfolder]: For 6135/6377 co-relation queries the response was YES. [2021-10-28 09:03:19,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6176 conditions, 1961 events. 658/1961 cut-off events. For 6135/6377 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15354 event pairs, 193 based on Foata normal form. 71/1886 useless extension candidates. Maximal degree in co-relation 6149. Up to 433 conditions per place. [2021-10-28 09:03:19,136 INFO L132 encePairwiseOnDemand]: 131/139 looper letters, 47 selfloop transitions, 17 changer transitions 0/209 dead transitions. [2021-10-28 09:03:19,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 209 transitions, 1297 flow [2021-10-28 09:03:19,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:03:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:03:19,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 883 transitions. [2021-10-28 09:03:19,141 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7940647482014388 [2021-10-28 09:03:19,141 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 883 transitions. [2021-10-28 09:03:19,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 883 transitions. [2021-10-28 09:03:19,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:19,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 883 transitions. [2021-10-28 09:03:19,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.375) internal successors, (883), 8 states have internal predecessors, (883), 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) [2021-10-28 09:03:19,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 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) [2021-10-28 09:03:19,150 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 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) [2021-10-28 09:03:19,151 INFO L186 Difference]: Start difference. First operand has 171 places, 198 transitions, 1105 flow. Second operand 8 states and 883 transitions. [2021-10-28 09:03:19,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 209 transitions, 1297 flow [2021-10-28 09:03:19,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 209 transitions, 1237 flow, removed 3 selfloop flow, removed 8 redundant places. [2021-10-28 09:03:19,181 INFO L242 Difference]: Finished difference. Result has 170 places, 197 transitions, 1067 flow [2021-10-28 09:03:19,181 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1067, PETRI_PLACES=170, PETRI_TRANSITIONS=197} [2021-10-28 09:03:19,182 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 46 predicate places. [2021-10-28 09:03:19,182 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 197 transitions, 1067 flow [2021-10-28 09:03:19,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 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) [2021-10-28 09:03:19,183 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:03:19,183 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:19,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:19,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:19,410 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:03:19,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:19,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1943308665, now seen corresponding path program 4 times [2021-10-28 09:03:19,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:19,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268342179] [2021-10-28 09:03:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:19,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:19,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:19,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268342179] [2021-10-28 09:03:19,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268342179] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:19,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038591995] [2021-10-28 09:03:19,604 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:03:19,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:19,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:19,605 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:19,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:03:19,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:03:19,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:19,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:03:19,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:20,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038591995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:20,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:20,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-10-28 09:03:20,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831356059] [2021-10-28 09:03:20,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:03:20,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:20,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:03:20,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:03:20,506 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 139 [2021-10-28 09:03:20,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 197 transitions, 1067 flow. Second operand has 14 states, 14 states have (on average 99.5) internal successors, (1393), 14 states have internal predecessors, (1393), 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) [2021-10-28 09:03:20,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:03:20,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 139 [2021-10-28 09:03:20,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:03:22,059 INFO L129 PetriNetUnfolder]: 2283/4593 cut-off events. [2021-10-28 09:03:22,059 INFO L130 PetriNetUnfolder]: For 9902/10006 co-relation queries the response was YES. [2021-10-28 09:03:22,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15145 conditions, 4593 events. 2283/4593 cut-off events. For 9902/10006 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 33472 event pairs, 598 based on Foata normal form. 33/4569 useless extension candidates. Maximal degree in co-relation 15120. Up to 1592 conditions per place. [2021-10-28 09:03:22,151 INFO L132 encePairwiseOnDemand]: 126/139 looper letters, 131 selfloop transitions, 55 changer transitions 0/280 dead transitions. [2021-10-28 09:03:22,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 280 transitions, 1946 flow [2021-10-28 09:03:22,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:03:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:03:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1357 transitions. [2021-10-28 09:03:22,159 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7509684560044272 [2021-10-28 09:03:22,160 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1357 transitions. [2021-10-28 09:03:22,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1357 transitions. [2021-10-28 09:03:22,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:22,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1357 transitions. [2021-10-28 09:03:22,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.38461538461539) internal successors, (1357), 13 states have internal predecessors, (1357), 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) [2021-10-28 09:03:22,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 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) [2021-10-28 09:03:22,177 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 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) [2021-10-28 09:03:22,177 INFO L186 Difference]: Start difference. First operand has 170 places, 197 transitions, 1067 flow. Second operand 13 states and 1357 transitions. [2021-10-28 09:03:22,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 280 transitions, 1946 flow [2021-10-28 09:03:22,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 280 transitions, 1924 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-28 09:03:22,238 INFO L242 Difference]: Finished difference. Result has 182 places, 219 transitions, 1472 flow [2021-10-28 09:03:22,240 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1472, PETRI_PLACES=182, PETRI_TRANSITIONS=219} [2021-10-28 09:03:22,240 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 58 predicate places. [2021-10-28 09:03:22,240 INFO L470 AbstractCegarLoop]: Abstraction has has 182 places, 219 transitions, 1472 flow [2021-10-28 09:03:22,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 99.5) internal successors, (1393), 14 states have internal predecessors, (1393), 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) [2021-10-28 09:03:22,241 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:03:22,242 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:22,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:22,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 09:03:22,461 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:03:22,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:22,462 INFO L85 PathProgramCache]: Analyzing trace with hash -891636045, now seen corresponding path program 5 times [2021-10-28 09:03:22,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:22,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124002247] [2021-10-28 09:03:22,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:22,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:22,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:22,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124002247] [2021-10-28 09:03:22,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124002247] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:22,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11084844] [2021-10-28 09:03:22,621 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:03:22,621 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:22,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:22,622 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:22,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:03:22,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:03:22,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:22,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:03:22,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:03:23,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11084844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:23,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:23,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2021-10-28 09:03:23,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500031632] [2021-10-28 09:03:23,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:03:23,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:23,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:03:23,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:03:23,457 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 139 [2021-10-28 09:03:23,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 219 transitions, 1472 flow. Second operand has 14 states, 14 states have (on average 95.78571428571429) internal successors, (1341), 14 states have internal predecessors, (1341), 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) [2021-10-28 09:03:23,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:03:23,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 139 [2021-10-28 09:03:23,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:03:26,068 INFO L129 PetriNetUnfolder]: 4162/7387 cut-off events. [2021-10-28 09:03:26,069 INFO L130 PetriNetUnfolder]: For 25281/25335 co-relation queries the response was YES. [2021-10-28 09:03:26,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27243 conditions, 7387 events. 4162/7387 cut-off events. For 25281/25335 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 50327 event pairs, 478 based on Foata normal form. 10/7314 useless extension candidates. Maximal degree in co-relation 27212. Up to 895 conditions per place. [2021-10-28 09:03:26,304 INFO L132 encePairwiseOnDemand]: 123/139 looper letters, 199 selfloop transitions, 133 changer transitions 0/408 dead transitions. [2021-10-28 09:03:26,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 408 transitions, 3154 flow [2021-10-28 09:03:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:03:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-28 09:03:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2252 transitions. [2021-10-28 09:03:26,315 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.736429038587312 [2021-10-28 09:03:26,315 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2252 transitions. [2021-10-28 09:03:26,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2252 transitions. [2021-10-28 09:03:26,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:26,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2252 transitions. [2021-10-28 09:03:26,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 102.36363636363636) internal successors, (2252), 22 states have internal predecessors, (2252), 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) [2021-10-28 09:03:26,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 139.0) internal successors, (3197), 23 states have internal predecessors, (3197), 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) [2021-10-28 09:03:26,357 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 139.0) internal successors, (3197), 23 states have internal predecessors, (3197), 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) [2021-10-28 09:03:26,358 INFO L186 Difference]: Start difference. First operand has 182 places, 219 transitions, 1472 flow. Second operand 22 states and 2252 transitions. [2021-10-28 09:03:26,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 408 transitions, 3154 flow [2021-10-28 09:03:26,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 408 transitions, 3121 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-10-28 09:03:26,513 INFO L242 Difference]: Finished difference. Result has 208 places, 257 transitions, 2201 flow [2021-10-28 09:03:26,514 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2201, PETRI_PLACES=208, PETRI_TRANSITIONS=257} [2021-10-28 09:03:26,514 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 84 predicate places. [2021-10-28 09:03:26,514 INFO L470 AbstractCegarLoop]: Abstraction has has 208 places, 257 transitions, 2201 flow [2021-10-28 09:03:26,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 95.78571428571429) internal successors, (1341), 14 states have internal predecessors, (1341), 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) [2021-10-28 09:03:26,515 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:03:26,516 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:26,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:26,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-28 09:03:26,730 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:03:26,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1252209919, now seen corresponding path program 6 times [2021-10-28 09:03:26,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:26,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955147020] [2021-10-28 09:03:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:26,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:26,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:26,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955147020] [2021-10-28 09:03:26,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955147020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:26,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126189945] [2021-10-28 09:03:26,893 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:03:26,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:26,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:26,895 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:26,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:03:27,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-28 09:03:27,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:27,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:03:27,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:03:27,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126189945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:27,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:27,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2021-10-28 09:03:27,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824672730] [2021-10-28 09:03:27,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:03:27,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:27,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:03:27,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:03:27,746 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 139 [2021-10-28 09:03:27,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 257 transitions, 2201 flow. Second operand has 14 states, 14 states have (on average 95.71428571428571) internal successors, (1340), 14 states have internal predecessors, (1340), 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) [2021-10-28 09:03:27,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:03:27,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 139 [2021-10-28 09:03:27,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:03:30,372 INFO L129 PetriNetUnfolder]: 4152/7204 cut-off events. [2021-10-28 09:03:30,373 INFO L130 PetriNetUnfolder]: For 35723/35748 co-relation queries the response was YES. [2021-10-28 09:03:30,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30129 conditions, 7204 events. 4152/7204 cut-off events. For 35723/35748 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 47679 event pairs, 635 based on Foata normal form. 19/7155 useless extension candidates. Maximal degree in co-relation 30088. Up to 950 conditions per place. [2021-10-28 09:03:30,529 INFO L132 encePairwiseOnDemand]: 124/139 looper letters, 208 selfloop transitions, 151 changer transitions 0/435 dead transitions. [2021-10-28 09:03:30,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 435 transitions, 4041 flow [2021-10-28 09:03:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:03:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-28 09:03:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2046 transitions. [2021-10-28 09:03:30,534 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7359712230215827 [2021-10-28 09:03:30,535 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2046 transitions. [2021-10-28 09:03:30,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2046 transitions. [2021-10-28 09:03:30,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:30,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2046 transitions. [2021-10-28 09:03:30,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 102.3) internal successors, (2046), 20 states have internal predecessors, (2046), 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) [2021-10-28 09:03:30,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 139.0) internal successors, (2919), 21 states have internal predecessors, (2919), 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) [2021-10-28 09:03:30,549 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 139.0) internal successors, (2919), 21 states have internal predecessors, (2919), 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) [2021-10-28 09:03:30,549 INFO L186 Difference]: Start difference. First operand has 208 places, 257 transitions, 2201 flow. Second operand 20 states and 2046 transitions. [2021-10-28 09:03:30,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 435 transitions, 4041 flow [2021-10-28 09:03:30,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 435 transitions, 3943 flow, removed 18 selfloop flow, removed 7 redundant places. [2021-10-28 09:03:30,838 INFO L242 Difference]: Finished difference. Result has 228 places, 300 transitions, 3015 flow [2021-10-28 09:03:30,839 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=2109, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3015, PETRI_PLACES=228, PETRI_TRANSITIONS=300} [2021-10-28 09:03:30,839 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 104 predicate places. [2021-10-28 09:03:30,839 INFO L470 AbstractCegarLoop]: Abstraction has has 228 places, 300 transitions, 3015 flow [2021-10-28 09:03:30,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 95.71428571428571) internal successors, (1340), 14 states have internal predecessors, (1340), 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) [2021-10-28 09:03:30,840 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:03:30,840 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:30,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:31,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:31,054 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:03:31,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:31,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1386829643, now seen corresponding path program 1 times [2021-10-28 09:03:31,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:31,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287773552] [2021-10-28 09:03:31,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:31,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:03:31,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:31,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287773552] [2021-10-28 09:03:31,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287773552] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:31,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:31,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:03:31,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139194779] [2021-10-28 09:03:31,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:03:31,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:31,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:03:31,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:03:31,296 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 139 [2021-10-28 09:03:31,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 300 transitions, 3015 flow. Second operand has 6 states, 6 states have (on average 105.16666666666667) internal successors, (631), 6 states have internal predecessors, (631), 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) [2021-10-28 09:03:31,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:03:31,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 139 [2021-10-28 09:03:31,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:03:31,336 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-10-28 09:03:31,336 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-10-28 09:03:31,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 39 events. 0/39 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-10-28 09:03:31,336 INFO L132 encePairwiseOnDemand]: 134/139 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2021-10-28 09:03:31,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 39 transitions, 116 flow [2021-10-28 09:03:31,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:03:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 09:03:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 619 transitions. [2021-10-28 09:03:31,339 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7422062350119905 [2021-10-28 09:03:31,339 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 619 transitions. [2021-10-28 09:03:31,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 619 transitions. [2021-10-28 09:03:31,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:31,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 619 transitions. [2021-10-28 09:03:31,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.16666666666667) internal successors, (619), 6 states have internal predecessors, (619), 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) [2021-10-28 09:03:31,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2021-10-28 09:03:31,345 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2021-10-28 09:03:31,345 INFO L186 Difference]: Start difference. First operand has 228 places, 300 transitions, 3015 flow. Second operand 6 states and 619 transitions. [2021-10-28 09:03:31,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 39 transitions, 116 flow [2021-10-28 09:03:31,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 39 transitions, 105 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-10-28 09:03:31,347 INFO L242 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2021-10-28 09:03:31,348 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2021-10-28 09:03:31,348 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, -34 predicate places. [2021-10-28 09:03:31,348 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2021-10-28 09:03:31,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.16666666666667) internal successors, (631), 6 states have internal predecessors, (631), 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) [2021-10-28 09:03:31,353 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:03:31,354 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:03:31,354 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:03:31,354 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 09:03:31,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 09:03:31,359 INFO L731 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:31,363 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:03:31,363 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:03:31,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:03:31 BasicIcfg [2021-10-28 09:03:31,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:03:31,379 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:03:31,379 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:03:31,379 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:03:31,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:03:05" (3/4) ... [2021-10-28 09:03:31,384 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:03:31,396 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 09:03:31,396 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 09:03:31,396 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-28 09:03:31,404 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-28 09:03:31,405 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:03:31,405 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:03:31,405 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:03:31,466 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:03:31,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:03:31,469 INFO L168 Benchmark]: Toolchain (without parser) took 28038.23 ms. Allocated memory was 102.8 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 70.6 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 291.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:31,470 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:03:31,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.67 ms. Allocated memory was 102.8 MB in the beginning and 138.4 MB in the end (delta: 35.7 MB). Free memory was 70.2 MB in the beginning and 111.2 MB in the end (delta: -41.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:31,472 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.09 ms. Allocated memory is still 138.4 MB. Free memory was 111.2 MB in the beginning and 109.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:31,473 INFO L168 Benchmark]: Boogie Preprocessor took 64.73 ms. Allocated memory is still 138.4 MB. Free memory was 109.2 MB in the beginning and 107.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:31,473 INFO L168 Benchmark]: RCFGBuilder took 1038.79 ms. Allocated memory is still 138.4 MB. Free memory was 107.7 MB in the beginning and 77.5 MB in the end (delta: 30.2 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:31,474 INFO L168 Benchmark]: TraceAbstraction took 26352.52 ms. Allocated memory was 138.4 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 76.9 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 263.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:31,475 INFO L168 Benchmark]: Witness Printer took 88.44 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:31,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 392.67 ms. Allocated memory was 102.8 MB in the beginning and 138.4 MB in the end (delta: 35.7 MB). Free memory was 70.2 MB in the beginning and 111.2 MB in the end (delta: -41.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.09 ms. Allocated memory is still 138.4 MB. Free memory was 111.2 MB in the beginning and 109.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.73 ms. Allocated memory is still 138.4 MB. Free memory was 109.2 MB in the beginning and 107.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1038.79 ms. Allocated memory is still 138.4 MB. Free memory was 107.7 MB in the beginning and 77.5 MB in the end (delta: 30.2 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26352.52 ms. Allocated memory was 138.4 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 76.9 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 263.2 MB. Max. memory is 16.1 GB. * Witness Printer took 88.44 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 95]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 158 locations, 4 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: 26.1s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 16.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 321 SDtfs, 1710 SDslu, 1051 SDs, 0 SdLazy, 3101 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 943 GetRequests, 720 SyntacticMatches, 7 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3015occurred in iteration=12, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 2040 NumberOfCodeBlocks, 2031 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 2020 ConstructedInterpolants, 0 QuantifiedInterpolants, 5288 SizeOfPredicates, 43 NumberOfNonLiveVariables, 1780 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 19/34 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:03:31,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f2637-9371-4e5f-9e69-67f3ce5cb554/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...