./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/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_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF --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 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:12:54,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:12:54,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:12:54,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:12:54,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:12:54,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:12:54,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:12:54,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:12:54,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:12:54,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:12:54,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:12:54,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:12:54,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:12:54,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:12:54,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:12:54,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:12:54,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:12:54,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:12:54,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:12:54,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:12:54,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:12:54,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:12:54,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:12:54,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:12:54,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:12:54,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:12:54,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:12:54,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:12:54,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:12:54,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:12:54,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:12:54,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:12:54,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:12:54,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:12:54,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:12:54,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:12:54,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:12:54,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:12:54,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:12:54,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:12:54,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:12:54,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:12:54,956 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:12:54,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:12:54,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:12:54,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:12:54,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:12:54,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:12:54,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:12:54,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:12:54,963 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:12:54,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:12:54,965 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:12:54,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:12:54,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:12:54,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:12:54,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:12:54,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:12:54,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:12:54,967 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:12:54,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:12:54,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:12:54,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:12:54,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:12:54,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:12:54,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:12:54,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:12:54,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:12:54,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:12:54,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:12:54,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:12:54,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:12:54,972 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:12:54,973 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:12:54,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:12:54,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:12:54,974 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_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4018a1168c08743b2a9b9283b6137e1dcc53bdf8ab8362348f4bbe02762305c3 [2021-11-20 06:12:55,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:12:55,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:12:55,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:12:55,315 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:12:55,316 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:12:55,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2021-11-20 06:12:55,410 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/data/10503b5e5/ca936791bae542b48ab4935d5964bb7a/FLAGbe1dbd8af [2021-11-20 06:12:55,875 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:12:55,876 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2021-11-20 06:12:55,885 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/data/10503b5e5/ca936791bae542b48ab4935d5964bb7a/FLAGbe1dbd8af [2021-11-20 06:12:56,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/data/10503b5e5/ca936791bae542b48ab4935d5964bb7a [2021-11-20 06:12:56,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:12:56,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:12:56,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:12:56,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:12:56,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:12:56,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:12:56" (1/1) ... [2021-11-20 06:12:56,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39432981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:56, skipping insertion in model container [2021-11-20 06:12:56,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:12:56" (1/1) ... [2021-11-20 06:12:56,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:12:56,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:12:56,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c[2525,2538] [2021-11-20 06:12:56,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:12:56,558 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:12:56,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c[2525,2538] [2021-11-20 06:12:56,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:12:56,604 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:12:56,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:56 WrapperNode [2021-11-20 06:12:56,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:12:56,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:12:56,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:12:56,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:12:56,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:56" (1/1) ... [2021-11-20 06:12:56,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:56" (1/1) ... [2021-11-20 06:12:56,679 INFO L137 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 191 [2021-11-20 06:12:56,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:12:56,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:12:56,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:12:56,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:12:56,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:56" (1/1) ... [2021-11-20 06:12:56,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:56" (1/1) ... [2021-11-20 06:12:56,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:56" (1/1) ... [2021-11-20 06:12:56,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:56" (1/1) ... [2021-11-20 06:12:56,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:56" (1/1) ... [2021-11-20 06:12:56,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:56" (1/1) ... [2021-11-20 06:12:56,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:56" (1/1) ... [2021-11-20 06:12:56,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:12:56,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:12:56,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:12:56,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:12:56,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:56" (1/1) ... [2021-11-20 06:12:56,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:12:56,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:12:56,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:12:56,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:12:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:12:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:12:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:12:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:12:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-20 06:12:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-20 06:12:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-20 06:12:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-20 06:12:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-20 06:12:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-20 06:12:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:12:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-20 06:12:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-20 06:12:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:12:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:12:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:12:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:12:56,897 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 06:12:57,004 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:12:57,006 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:12:57,408 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:12:57,615 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:12:57,615 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 06:12:57,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:12:57 BoogieIcfgContainer [2021-11-20 06:12:57,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:12:57,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:12:57,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:12:57,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:12:57,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:12:56" (1/3) ... [2021-11-20 06:12:57,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523a22f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:12:57, skipping insertion in model container [2021-11-20 06:12:57,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:12:56" (2/3) ... [2021-11-20 06:12:57,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523a22f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:12:57, skipping insertion in model container [2021-11-20 06:12:57,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:12:57" (3/3) ... [2021-11-20 06:12:57,631 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2021-11-20 06:12:57,638 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 06:12:57,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:12:57,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:12:57,639 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 06:12:57,723 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,724 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,724 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,724 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,727 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,727 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,727 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,727 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,728 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,728 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,729 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,730 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,731 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,731 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,731 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,732 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,732 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,732 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,732 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,733 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,733 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,733 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,733 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,734 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,734 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,734 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,734 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,734 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,735 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,735 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,735 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,735 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,736 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,736 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,739 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,739 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,739 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,739 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,740 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,740 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,741 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,741 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,741 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,742 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,742 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,742 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,742 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,743 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,743 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,743 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,744 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,744 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,744 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,744 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,745 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,745 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,745 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,745 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,745 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,748 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,748 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,752 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,752 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,753 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,755 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,761 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,761 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,761 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,761 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,762 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,762 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,762 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,762 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,762 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,762 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,762 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,763 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,763 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,763 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,763 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,764 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,764 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,764 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,764 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,764 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,764 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,764 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,765 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,765 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,765 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,765 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,766 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,766 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,766 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,766 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,766 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,766 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,767 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,770 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,771 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,771 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,771 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,771 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,771 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,772 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,778 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,778 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,778 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,778 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,778 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,779 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,779 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,779 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,779 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,779 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,780 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,780 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,780 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:12:57,792 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-20 06:12:57,874 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:12:57,881 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 [2021-11-20 06:12:57,881 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-20 06:12:57,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 151 places, 153 transitions, 330 flow [2021-11-20 06:12:58,019 INFO L129 PetriNetUnfolder]: 12/150 cut-off events. [2021-11-20 06:12:58,028 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-20 06:12:58,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 12/150 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. 0/137 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2021-11-20 06:12:58,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 153 transitions, 330 flow [2021-11-20 06:12:58,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 139 transitions, 296 flow [2021-11-20 06:12:58,139 INFO L129 PetriNetUnfolder]: 12/138 cut-off events. [2021-11-20 06:12:58,140 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-20 06:12:58,140 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:12:58,141 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] [2021-11-20 06:12:58,141 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:12:58,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:12:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash -242833221, now seen corresponding path program 1 times [2021-11-20 06:12:58,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:12:58,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179138731] [2021-11-20 06:12:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:12:58,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:12:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:12:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:12:58,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:12:58,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179138731] [2021-11-20 06:12:58,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179138731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:12:58,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:12:58,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:12:58,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427850185] [2021-11-20 06:12:58,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:12:58,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:12:58,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:12:58,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:12:58,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:12:58,590 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 153 [2021-11-20 06:12:58,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 139 transitions, 296 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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) [2021-11-20 06:12:58,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:12:58,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 153 [2021-11-20 06:12:58,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:12:58,750 INFO L129 PetriNetUnfolder]: 41/264 cut-off events. [2021-11-20 06:12:58,750 INFO L130 PetriNetUnfolder]: For 50/51 co-relation queries the response was YES. [2021-11-20 06:12:58,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 264 events. 41/264 cut-off events. For 50/51 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 706 event pairs, 15 based on Foata normal form. 42/275 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2021-11-20 06:12:58,756 INFO L132 encePairwiseOnDemand]: 145/153 looper letters, 9 selfloop transitions, 0 changer transitions 4/131 dead transitions. [2021-11-20 06:12:58,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 131 transitions, 298 flow [2021-11-20 06:12:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:12:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-20 06:12:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 287 transitions. [2021-11-20 06:12:58,779 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9379084967320261 [2021-11-20 06:12:58,780 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 287 transitions. [2021-11-20 06:12:58,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 287 transitions. [2021-11-20 06:12:58,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:12:58,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 287 transitions. [2021-11-20 06:12:58,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 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) [2021-11-20 06:12:58,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2021-11-20 06:12:58,812 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2021-11-20 06:12:58,814 INFO L186 Difference]: Start difference. First operand has 137 places, 139 transitions, 296 flow. Second operand 2 states and 287 transitions. [2021-11-20 06:12:58,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 131 transitions, 298 flow [2021-11-20 06:12:58,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 131 transitions, 286 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-20 06:12:58,826 INFO L242 Difference]: Finished difference. Result has 132 places, 127 transitions, 260 flow [2021-11-20 06:12:58,828 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=260, PETRI_PLACES=132, PETRI_TRANSITIONS=127} [2021-11-20 06:12:58,835 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, -5 predicate places. [2021-11-20 06:12:58,835 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 127 transitions, 260 flow [2021-11-20 06:12:58,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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) [2021-11-20 06:12:58,836 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:12:58,836 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] [2021-11-20 06:12:58,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:12:58,837 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:12:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:12:58,838 INFO L85 PathProgramCache]: Analyzing trace with hash 740750995, now seen corresponding path program 1 times [2021-11-20 06:12:58,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:12:58,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197280798] [2021-11-20 06:12:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:12:58,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:12:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:12:59,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:12:59,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:12:59,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197280798] [2021-11-20 06:12:59,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197280798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:12:59,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:12:59,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:12:59,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320141619] [2021-11-20 06:12:59,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:12:59,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:12:59,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:12:59,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:12:59,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:12:59,180 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 153 [2021-11-20 06:12:59,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 127 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:12:59,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:12:59,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 153 [2021-11-20 06:12:59,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:12:59,440 INFO L129 PetriNetUnfolder]: 54/344 cut-off events. [2021-11-20 06:12:59,440 INFO L130 PetriNetUnfolder]: For 21/22 co-relation queries the response was YES. [2021-11-20 06:12:59,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 344 events. 54/344 cut-off events. For 21/22 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1185 event pairs, 6 based on Foata normal form. 2/311 useless extension candidates. Maximal degree in co-relation 459. Up to 52 conditions per place. [2021-11-20 06:12:59,446 INFO L132 encePairwiseOnDemand]: 145/153 looper letters, 39 selfloop transitions, 6 changer transitions 4/149 dead transitions. [2021-11-20 06:12:59,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 149 transitions, 411 flow [2021-11-20 06:12:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:12:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-20 06:12:59,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 728 transitions. [2021-11-20 06:12:59,459 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7930283224400871 [2021-11-20 06:12:59,459 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 728 transitions. [2021-11-20 06:12:59,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 728 transitions. [2021-11-20 06:12:59,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:12:59,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 728 transitions. [2021-11-20 06:12:59,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 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) [2021-11-20 06:12:59,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 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) [2021-11-20 06:12:59,472 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 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) [2021-11-20 06:12:59,473 INFO L186 Difference]: Start difference. First operand has 132 places, 127 transitions, 260 flow. Second operand 6 states and 728 transitions. [2021-11-20 06:12:59,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 149 transitions, 411 flow [2021-11-20 06:12:59,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 149 transitions, 411 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-20 06:12:59,483 INFO L242 Difference]: Finished difference. Result has 136 places, 131 transitions, 296 flow [2021-11-20 06:12:59,483 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=136, PETRI_TRANSITIONS=131} [2021-11-20 06:12:59,484 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, -1 predicate places. [2021-11-20 06:12:59,485 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 131 transitions, 296 flow [2021-11-20 06:12:59,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:12:59,486 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:12:59,486 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, 1] [2021-11-20 06:12:59,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:12:59,488 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:12:59,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:12:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1783469737, now seen corresponding path program 1 times [2021-11-20 06:12:59,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:12:59,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188439096] [2021-11-20 06:12:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:12:59,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:12:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:12:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:12:59,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:12:59,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188439096] [2021-11-20 06:12:59,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188439096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:12:59,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:12:59,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:12:59,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835889523] [2021-11-20 06:12:59,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:12:59,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:12:59,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:12:59,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:12:59,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:12:59,707 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 153 [2021-11-20 06:12:59,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 131 transitions, 296 flow. Second operand has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 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) [2021-11-20 06:12:59,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:12:59,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 153 [2021-11-20 06:12:59,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:13:00,195 INFO L129 PetriNetUnfolder]: 378/1242 cut-off events. [2021-11-20 06:13:00,195 INFO L130 PetriNetUnfolder]: For 239/267 co-relation queries the response was YES. [2021-11-20 06:13:00,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2173 conditions, 1242 events. 378/1242 cut-off events. For 239/267 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7881 event pairs, 144 based on Foata normal form. 0/1054 useless extension candidates. Maximal degree in co-relation 2166. Up to 429 conditions per place. [2021-11-20 06:13:00,212 INFO L132 encePairwiseOnDemand]: 144/153 looper letters, 55 selfloop transitions, 8 changer transitions 0/159 dead transitions. [2021-11-20 06:13:00,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 159 transitions, 506 flow [2021-11-20 06:13:00,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:13:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-20 06:13:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 960 transitions. [2021-11-20 06:13:00,219 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7843137254901961 [2021-11-20 06:13:00,219 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 960 transitions. [2021-11-20 06:13:00,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 960 transitions. [2021-11-20 06:13:00,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:13:00,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 960 transitions. [2021-11-20 06:13:00,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 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) [2021-11-20 06:13:00,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 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) [2021-11-20 06:13:00,230 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 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) [2021-11-20 06:13:00,230 INFO L186 Difference]: Start difference. First operand has 136 places, 131 transitions, 296 flow. Second operand 8 states and 960 transitions. [2021-11-20 06:13:00,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 159 transitions, 506 flow [2021-11-20 06:13:00,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 159 transitions, 502 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-11-20 06:13:00,240 INFO L242 Difference]: Finished difference. Result has 142 places, 134 transitions, 328 flow [2021-11-20 06:13:00,240 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=328, PETRI_PLACES=142, PETRI_TRANSITIONS=134} [2021-11-20 06:13:00,243 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 5 predicate places. [2021-11-20 06:13:00,243 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 134 transitions, 328 flow [2021-11-20 06:13:00,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 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) [2021-11-20 06:13:00,244 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:13:00,245 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, 1] [2021-11-20 06:13:00,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:13:00,245 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:13:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash -507586615, now seen corresponding path program 1 times [2021-11-20 06:13:00,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:00,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235101978] [2021-11-20 06:13:00,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:00,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:00,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:00,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235101978] [2021-11-20 06:13:00,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235101978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:00,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:00,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:13:00,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133156461] [2021-11-20 06:13:00,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:00,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:13:00,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:00,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:13:00,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:13:00,466 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 153 [2021-11-20 06:13:00,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 134 transitions, 328 flow. Second operand has 10 states, 10 states have (on average 95.1) internal successors, (951), 10 states have internal predecessors, (951), 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) [2021-11-20 06:13:00,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:13:00,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 153 [2021-11-20 06:13:00,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:13:01,223 INFO L129 PetriNetUnfolder]: 870/1937 cut-off events. [2021-11-20 06:13:01,223 INFO L130 PetriNetUnfolder]: For 377/401 co-relation queries the response was YES. [2021-11-20 06:13:01,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3794 conditions, 1937 events. 870/1937 cut-off events. For 377/401 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13127 event pairs, 583 based on Foata normal form. 24/1735 useless extension candidates. Maximal degree in co-relation 3785. Up to 1139 conditions per place. [2021-11-20 06:13:01,246 INFO L132 encePairwiseOnDemand]: 139/153 looper letters, 75 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2021-11-20 06:13:01,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 167 transitions, 590 flow [2021-11-20 06:13:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:13:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-20 06:13:01,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1266 transitions. [2021-11-20 06:13:01,252 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6365007541478129 [2021-11-20 06:13:01,252 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1266 transitions. [2021-11-20 06:13:01,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1266 transitions. [2021-11-20 06:13:01,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:13:01,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1266 transitions. [2021-11-20 06:13:01,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 97.38461538461539) internal successors, (1266), 13 states have internal predecessors, (1266), 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) [2021-11-20 06:13:01,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 153.0) internal successors, (2142), 14 states have internal predecessors, (2142), 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) [2021-11-20 06:13:01,266 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 153.0) internal successors, (2142), 14 states have internal predecessors, (2142), 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) [2021-11-20 06:13:01,267 INFO L186 Difference]: Start difference. First operand has 142 places, 134 transitions, 328 flow. Second operand 13 states and 1266 transitions. [2021-11-20 06:13:01,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 167 transitions, 590 flow [2021-11-20 06:13:01,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 167 transitions, 580 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 06:13:01,275 INFO L242 Difference]: Finished difference. Result has 155 places, 138 transitions, 371 flow [2021-11-20 06:13:01,276 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=371, PETRI_PLACES=155, PETRI_TRANSITIONS=138} [2021-11-20 06:13:01,277 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 18 predicate places. [2021-11-20 06:13:01,278 INFO L470 AbstractCegarLoop]: Abstraction has has 155 places, 138 transitions, 371 flow [2021-11-20 06:13:01,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.1) internal successors, (951), 10 states have internal predecessors, (951), 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) [2021-11-20 06:13:01,279 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:13:01,279 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, 1] [2021-11-20 06:13:01,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:13:01,279 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:13:01,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:01,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1248427851, now seen corresponding path program 1 times [2021-11-20 06:13:01,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:01,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175702436] [2021-11-20 06:13:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:01,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:01,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:01,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175702436] [2021-11-20 06:13:01,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175702436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:01,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:01,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:13:01,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434380148] [2021-11-20 06:13:01,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:01,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:13:01,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:01,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:13:01,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:13:01,454 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 153 [2021-11-20 06:13:01,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 138 transitions, 371 flow. Second operand has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2021-11-20 06:13:01,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:13:01,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 153 [2021-11-20 06:13:01,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:13:02,107 INFO L129 PetriNetUnfolder]: 688/1433 cut-off events. [2021-11-20 06:13:02,107 INFO L130 PetriNetUnfolder]: For 445/463 co-relation queries the response was YES. [2021-11-20 06:13:02,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3038 conditions, 1433 events. 688/1433 cut-off events. For 445/463 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8485 event pairs, 365 based on Foata normal form. 18/1340 useless extension candidates. Maximal degree in co-relation 3024. Up to 826 conditions per place. [2021-11-20 06:13:02,127 INFO L132 encePairwiseOnDemand]: 140/153 looper letters, 60 selfloop transitions, 7 changer transitions 21/167 dead transitions. [2021-11-20 06:13:02,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 167 transitions, 627 flow [2021-11-20 06:13:02,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:13:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-20 06:13:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1184 transitions. [2021-11-20 06:13:02,133 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.644880174291939 [2021-11-20 06:13:02,133 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1184 transitions. [2021-11-20 06:13:02,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1184 transitions. [2021-11-20 06:13:02,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:13:02,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1184 transitions. [2021-11-20 06:13:02,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 98.66666666666667) internal successors, (1184), 12 states have internal predecessors, (1184), 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) [2021-11-20 06:13:02,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 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) [2021-11-20 06:13:02,145 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 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) [2021-11-20 06:13:02,145 INFO L186 Difference]: Start difference. First operand has 155 places, 138 transitions, 371 flow. Second operand 12 states and 1184 transitions. [2021-11-20 06:13:02,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 167 transitions, 627 flow [2021-11-20 06:13:02,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 167 transitions, 610 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-11-20 06:13:02,152 INFO L242 Difference]: Finished difference. Result has 161 places, 132 transitions, 334 flow [2021-11-20 06:13:02,152 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=334, PETRI_PLACES=161, PETRI_TRANSITIONS=132} [2021-11-20 06:13:02,153 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 24 predicate places. [2021-11-20 06:13:02,154 INFO L470 AbstractCegarLoop]: Abstraction has has 161 places, 132 transitions, 334 flow [2021-11-20 06:13:02,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2021-11-20 06:13:02,155 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:13:02,155 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:02,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:13:02,155 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:13:02,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:02,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1544431852, now seen corresponding path program 1 times [2021-11-20 06:13:02,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:02,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236209533] [2021-11-20 06:13:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:02,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:02,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:02,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236209533] [2021-11-20 06:13:02,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236209533] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:02,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836523611] [2021-11-20 06:13:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:02,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:02,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:02,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:02,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:13:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:02,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:13:02,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:02,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:13:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:03,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836523611] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:13:03,384 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:13:03,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2021-11-20 06:13:03,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228653855] [2021-11-20 06:13:03,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:13:03,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:13:03,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:03,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:13:03,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:13:03,392 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 153 [2021-11-20 06:13:03,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 132 transitions, 334 flow. Second operand has 18 states, 18 states have (on average 108.94444444444444) internal successors, (1961), 18 states have internal predecessors, (1961), 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) [2021-11-20 06:13:03,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:13:03,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 153 [2021-11-20 06:13:03,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:13:04,363 INFO L129 PetriNetUnfolder]: 1477/2667 cut-off events. [2021-11-20 06:13:04,364 INFO L130 PetriNetUnfolder]: For 1058/1058 co-relation queries the response was YES. [2021-11-20 06:13:04,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6247 conditions, 2667 events. 1477/2667 cut-off events. For 1058/1058 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 17889 event pairs, 335 based on Foata normal form. 10/2642 useless extension candidates. Maximal degree in co-relation 6231. Up to 680 conditions per place. [2021-11-20 06:13:04,401 INFO L132 encePairwiseOnDemand]: 141/153 looper letters, 106 selfloop transitions, 19 changer transitions 0/214 dead transitions. [2021-11-20 06:13:04,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 214 transitions, 861 flow [2021-11-20 06:13:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:13:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-20 06:13:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1484 transitions. [2021-11-20 06:13:04,408 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7461035696329814 [2021-11-20 06:13:04,408 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1484 transitions. [2021-11-20 06:13:04,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1484 transitions. [2021-11-20 06:13:04,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:13:04,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1484 transitions. [2021-11-20 06:13:04,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.15384615384616) internal successors, (1484), 13 states have internal predecessors, (1484), 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) [2021-11-20 06:13:04,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 153.0) internal successors, (2142), 14 states have internal predecessors, (2142), 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) [2021-11-20 06:13:04,422 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 153.0) internal successors, (2142), 14 states have internal predecessors, (2142), 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) [2021-11-20 06:13:04,422 INFO L186 Difference]: Start difference. First operand has 161 places, 132 transitions, 334 flow. Second operand 13 states and 1484 transitions. [2021-11-20 06:13:04,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 214 transitions, 861 flow [2021-11-20 06:13:04,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 214 transitions, 798 flow, removed 24 selfloop flow, removed 14 redundant places. [2021-11-20 06:13:04,437 INFO L242 Difference]: Finished difference. Result has 152 places, 145 transitions, 402 flow [2021-11-20 06:13:04,438 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=402, PETRI_PLACES=152, PETRI_TRANSITIONS=145} [2021-11-20 06:13:04,439 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 15 predicate places. [2021-11-20 06:13:04,439 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 145 transitions, 402 flow [2021-11-20 06:13:04,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 108.94444444444444) internal successors, (1961), 18 states have internal predecessors, (1961), 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) [2021-11-20 06:13:04,441 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:13:04,441 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:04,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:04,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:04,664 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:13:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash 938398054, now seen corresponding path program 2 times [2021-11-20 06:13:04,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:04,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800838770] [2021-11-20 06:13:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:04,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:04,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:04,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800838770] [2021-11-20 06:13:04,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800838770] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:04,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597395753] [2021-11-20 06:13:04,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:13:04,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:04,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:04,851 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:04,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:13:04,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:13:04,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:13:04,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:13:04,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:05,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:05,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:13:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:05,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597395753] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:13:05,402 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:13:05,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 15 [2021-11-20 06:13:05,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097087769] [2021-11-20 06:13:05,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:13:05,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:13:05,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:05,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:13:05,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:13:05,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 153 [2021-11-20 06:13:05,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 145 transitions, 402 flow. Second operand has 15 states, 15 states have (on average 106.93333333333334) internal successors, (1604), 15 states have internal predecessors, (1604), 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) [2021-11-20 06:13:05,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:13:05,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 153 [2021-11-20 06:13:05,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:13:07,492 INFO L129 PetriNetUnfolder]: 3557/6411 cut-off events. [2021-11-20 06:13:07,493 INFO L130 PetriNetUnfolder]: For 3000/3048 co-relation queries the response was YES. [2021-11-20 06:13:07,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16048 conditions, 6411 events. 3557/6411 cut-off events. For 3000/3048 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 45480 event pairs, 315 based on Foata normal form. 14/6080 useless extension candidates. Maximal degree in co-relation 16036. Up to 663 conditions per place. [2021-11-20 06:13:07,579 INFO L132 encePairwiseOnDemand]: 137/153 looper letters, 209 selfloop transitions, 104 changer transitions 0/399 dead transitions. [2021-11-20 06:13:07,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 399 transitions, 1942 flow [2021-11-20 06:13:07,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 06:13:07,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 06:13:07,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2716 transitions. [2021-11-20 06:13:07,590 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7396514161220044 [2021-11-20 06:13:07,591 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2716 transitions. [2021-11-20 06:13:07,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2716 transitions. [2021-11-20 06:13:07,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:13:07,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2716 transitions. [2021-11-20 06:13:07,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 113.16666666666667) internal successors, (2716), 24 states have internal predecessors, (2716), 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) [2021-11-20 06:13:07,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 153.0) internal successors, (3825), 25 states have internal predecessors, (3825), 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) [2021-11-20 06:13:07,686 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 153.0) internal successors, (3825), 25 states have internal predecessors, (3825), 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) [2021-11-20 06:13:07,686 INFO L186 Difference]: Start difference. First operand has 152 places, 145 transitions, 402 flow. Second operand 24 states and 2716 transitions. [2021-11-20 06:13:07,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 399 transitions, 1942 flow [2021-11-20 06:13:07,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 399 transitions, 1935 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 06:13:07,717 INFO L242 Difference]: Finished difference. Result has 189 places, 235 transitions, 1229 flow [2021-11-20 06:13:07,717 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1229, PETRI_PLACES=189, PETRI_TRANSITIONS=235} [2021-11-20 06:13:07,718 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 52 predicate places. [2021-11-20 06:13:07,718 INFO L470 AbstractCegarLoop]: Abstraction has has 189 places, 235 transitions, 1229 flow [2021-11-20 06:13:07,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 106.93333333333334) internal successors, (1604), 15 states have internal predecessors, (1604), 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) [2021-11-20 06:13:07,720 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:13:07,720 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:07,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:07,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:07,948 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:13:07,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:07,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1306064334, now seen corresponding path program 3 times [2021-11-20 06:13:07,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:07,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310775063] [2021-11-20 06:13:07,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:07,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:08,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:08,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310775063] [2021-11-20 06:13:08,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310775063] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:08,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433406238] [2021-11-20 06:13:08,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:13:08,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:08,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:08,075 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:08,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:13:08,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 06:13:08,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:13:08,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:13:08,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:08,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:13:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:08,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433406238] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:13:08,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:13:08,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2021-11-20 06:13:08,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085462455] [2021-11-20 06:13:08,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:13:08,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:13:08,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:08,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:13:08,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:13:08,817 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 153 [2021-11-20 06:13:08,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 235 transitions, 1229 flow. Second operand has 16 states, 16 states have (on average 106.6875) internal successors, (1707), 16 states have internal predecessors, (1707), 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) [2021-11-20 06:13:08,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:13:08,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 153 [2021-11-20 06:13:08,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:13:12,264 INFO L129 PetriNetUnfolder]: 5294/9437 cut-off events. [2021-11-20 06:13:12,265 INFO L130 PetriNetUnfolder]: For 37925/37964 co-relation queries the response was YES. [2021-11-20 06:13:12,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35282 conditions, 9437 events. 5294/9437 cut-off events. For 37925/37964 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 71285 event pairs, 345 based on Foata normal form. 54/9447 useless extension candidates. Maximal degree in co-relation 35252. Up to 1067 conditions per place. [2021-11-20 06:13:12,427 INFO L132 encePairwiseOnDemand]: 136/153 looper letters, 266 selfloop transitions, 245 changer transitions 0/597 dead transitions. [2021-11-20 06:13:12,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 597 transitions, 4509 flow [2021-11-20 06:13:12,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 06:13:12,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-20 06:13:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2984 transitions. [2021-11-20 06:13:12,438 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7501256913021619 [2021-11-20 06:13:12,438 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2984 transitions. [2021-11-20 06:13:12,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2984 transitions. [2021-11-20 06:13:12,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:13:12,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2984 transitions. [2021-11-20 06:13:12,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 114.76923076923077) internal successors, (2984), 26 states have internal predecessors, (2984), 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) [2021-11-20 06:13:12,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 153.0) internal successors, (4131), 27 states have internal predecessors, (4131), 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) [2021-11-20 06:13:12,463 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 153.0) internal successors, (4131), 27 states have internal predecessors, (4131), 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) [2021-11-20 06:13:12,463 INFO L186 Difference]: Start difference. First operand has 189 places, 235 transitions, 1229 flow. Second operand 26 states and 2984 transitions. [2021-11-20 06:13:12,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 597 transitions, 4509 flow [2021-11-20 06:13:12,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 597 transitions, 4448 flow, removed 26 selfloop flow, removed 5 redundant places. [2021-11-20 06:13:12,741 INFO L242 Difference]: Finished difference. Result has 225 places, 391 transitions, 3257 flow [2021-11-20 06:13:12,742 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3257, PETRI_PLACES=225, PETRI_TRANSITIONS=391} [2021-11-20 06:13:12,743 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 88 predicate places. [2021-11-20 06:13:12,743 INFO L470 AbstractCegarLoop]: Abstraction has has 225 places, 391 transitions, 3257 flow [2021-11-20 06:13:12,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 106.6875) internal successors, (1707), 16 states have internal predecessors, (1707), 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) [2021-11-20 06:13:12,745 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:13:12,745 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:12,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:12,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-20 06:13:12,960 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:13:12,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:12,961 INFO L85 PathProgramCache]: Analyzing trace with hash -89612040, now seen corresponding path program 4 times [2021-11-20 06:13:12,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:12,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633726992] [2021-11-20 06:13:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:12,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:13,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:13,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:13,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633726992] [2021-11-20 06:13:13,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633726992] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:13,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97469231] [2021-11-20 06:13:13,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:13:13,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:13,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:13,084 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:13,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:13:13,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:13:13,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:13:13,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:13:13,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:13,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:13:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:14,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97469231] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:14,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:13:14,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2021-11-20 06:13:14,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768065544] [2021-11-20 06:13:14,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:14,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:13:14,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:13:14,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:13:14,146 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 153 [2021-11-20 06:13:14,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 391 transitions, 3257 flow. Second operand has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 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) [2021-11-20 06:13:14,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:13:14,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 153 [2021-11-20 06:13:14,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:13:16,570 INFO L129 PetriNetUnfolder]: 4186/7877 cut-off events. [2021-11-20 06:13:16,571 INFO L130 PetriNetUnfolder]: For 42211/42430 co-relation queries the response was YES. [2021-11-20 06:13:16,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33131 conditions, 7877 events. 4186/7877 cut-off events. For 42211/42430 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 62050 event pairs, 480 based on Foata normal form. 30/7855 useless extension candidates. Maximal degree in co-relation 33085. Up to 3209 conditions per place. [2021-11-20 06:13:16,727 INFO L132 encePairwiseOnDemand]: 140/153 looper letters, 178 selfloop transitions, 118 changer transitions 0/456 dead transitions. [2021-11-20 06:13:16,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 456 transitions, 4344 flow [2021-11-20 06:13:16,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:13:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 06:13:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1149 transitions. [2021-11-20 06:13:16,730 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7509803921568627 [2021-11-20 06:13:16,730 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1149 transitions. [2021-11-20 06:13:16,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1149 transitions. [2021-11-20 06:13:16,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:13:16,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1149 transitions. [2021-11-20 06:13:16,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.9) internal successors, (1149), 10 states have internal predecessors, (1149), 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) [2021-11-20 06:13:16,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 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) [2021-11-20 06:13:16,739 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 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) [2021-11-20 06:13:16,740 INFO L186 Difference]: Start difference. First operand has 225 places, 391 transitions, 3257 flow. Second operand 10 states and 1149 transitions. [2021-11-20 06:13:16,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 456 transitions, 4344 flow [2021-11-20 06:13:17,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 456 transitions, 4218 flow, removed 22 selfloop flow, removed 7 redundant places. [2021-11-20 06:13:17,092 INFO L242 Difference]: Finished difference. Result has 230 places, 402 transitions, 3685 flow [2021-11-20 06:13:17,093 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=3145, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3685, PETRI_PLACES=230, PETRI_TRANSITIONS=402} [2021-11-20 06:13:17,094 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 93 predicate places. [2021-11-20 06:13:17,094 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 402 transitions, 3685 flow [2021-11-20 06:13:17,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 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) [2021-11-20 06:13:17,095 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:13:17,095 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:17,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:17,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:17,320 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:13:17,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash -100937118, now seen corresponding path program 5 times [2021-11-20 06:13:17,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:17,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557548745] [2021-11-20 06:13:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:17,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:17,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:17,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557548745] [2021-11-20 06:13:17,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557548745] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:17,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243240152] [2021-11-20 06:13:17,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 06:13:17,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:17,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:17,436 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:17,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 06:13:17,525 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:13:17,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:13:17,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:13:17,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:17,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:13:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:18,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243240152] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:13:18,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:13:18,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2021-11-20 06:13:18,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347121601] [2021-11-20 06:13:18,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:13:18,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 06:13:18,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:18,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 06:13:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:13:18,047 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 153 [2021-11-20 06:13:18,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 402 transitions, 3685 flow. Second operand has 17 states, 17 states have (on average 106.47058823529412) internal successors, (1810), 17 states have internal predecessors, (1810), 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) [2021-11-20 06:13:18,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:13:18,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 153 [2021-11-20 06:13:18,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:13:21,978 INFO L129 PetriNetUnfolder]: 6070/10986 cut-off events. [2021-11-20 06:13:21,978 INFO L130 PetriNetUnfolder]: For 70712/71033 co-relation queries the response was YES. [2021-11-20 06:13:22,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48506 conditions, 10986 events. 6070/10986 cut-off events. For 70712/71033 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 86469 event pairs, 720 based on Foata normal form. 44/10959 useless extension candidates. Maximal degree in co-relation 48457. Up to 1214 conditions per place. [2021-11-20 06:13:22,263 INFO L132 encePairwiseOnDemand]: 137/153 looper letters, 275 selfloop transitions, 258 changer transitions 0/619 dead transitions. [2021-11-20 06:13:22,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 619 transitions, 6254 flow [2021-11-20 06:13:22,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 06:13:22,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 06:13:22,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2757 transitions. [2021-11-20 06:13:22,270 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7508169934640523 [2021-11-20 06:13:22,270 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2757 transitions. [2021-11-20 06:13:22,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2757 transitions. [2021-11-20 06:13:22,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:13:22,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2757 transitions. [2021-11-20 06:13:22,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 114.875) internal successors, (2757), 24 states have internal predecessors, (2757), 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) [2021-11-20 06:13:22,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 153.0) internal successors, (3825), 25 states have internal predecessors, (3825), 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) [2021-11-20 06:13:22,287 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 153.0) internal successors, (3825), 25 states have internal predecessors, (3825), 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) [2021-11-20 06:13:22,287 INFO L186 Difference]: Start difference. First operand has 230 places, 402 transitions, 3685 flow. Second operand 24 states and 2757 transitions. [2021-11-20 06:13:22,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 619 transitions, 6254 flow [2021-11-20 06:13:22,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 619 transitions, 6151 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-11-20 06:13:22,918 INFO L242 Difference]: Finished difference. Result has 258 places, 437 transitions, 4803 flow [2021-11-20 06:13:22,919 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=3574, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4803, PETRI_PLACES=258, PETRI_TRANSITIONS=437} [2021-11-20 06:13:22,920 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 121 predicate places. [2021-11-20 06:13:22,921 INFO L470 AbstractCegarLoop]: Abstraction has has 258 places, 437 transitions, 4803 flow [2021-11-20 06:13:22,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 106.47058823529412) internal successors, (1810), 17 states have internal predecessors, (1810), 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) [2021-11-20 06:13:22,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:13:22,922 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:22,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:23,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 06:13:23,136 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:13:23,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash 341809990, now seen corresponding path program 6 times [2021-11-20 06:13:23,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:23,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117994775] [2021-11-20 06:13:23,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:23,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:23,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:23,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117994775] [2021-11-20 06:13:23,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117994775] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:23,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360123627] [2021-11-20 06:13:23,259 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 06:13:23,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:23,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:23,264 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:23,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 06:13:23,367 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-20 06:13:23,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:13:23,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:13:23,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:23,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:23,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:13:24,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:24,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360123627] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:24,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:13:24,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 20 [2021-11-20 06:13:24,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969951974] [2021-11-20 06:13:24,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:24,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:13:24,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:24,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:13:24,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:13:24,286 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 153 [2021-11-20 06:13:24,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 437 transitions, 4803 flow. Second operand has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 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) [2021-11-20 06:13:24,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:13:24,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 153 [2021-11-20 06:13:24,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:13:26,488 INFO L129 PetriNetUnfolder]: 4665/8660 cut-off events. [2021-11-20 06:13:26,488 INFO L130 PetriNetUnfolder]: For 65877/66133 co-relation queries the response was YES. [2021-11-20 06:13:26,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40742 conditions, 8660 events. 4665/8660 cut-off events. For 65877/66133 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 68757 event pairs, 478 based on Foata normal form. 19/8612 useless extension candidates. Maximal degree in co-relation 40683. Up to 2921 conditions per place. [2021-11-20 06:13:26,638 INFO L132 encePairwiseOnDemand]: 141/153 looper letters, 149 selfloop transitions, 165 changer transitions 0/480 dead transitions. [2021-11-20 06:13:26,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 480 transitions, 5723 flow [2021-11-20 06:13:26,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:13:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 06:13:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1145 transitions. [2021-11-20 06:13:26,641 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7483660130718954 [2021-11-20 06:13:26,641 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1145 transitions. [2021-11-20 06:13:26,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1145 transitions. [2021-11-20 06:13:26,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:13:26,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1145 transitions. [2021-11-20 06:13:26,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.5) internal successors, (1145), 10 states have internal predecessors, (1145), 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) [2021-11-20 06:13:26,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 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) [2021-11-20 06:13:26,647 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 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) [2021-11-20 06:13:26,648 INFO L186 Difference]: Start difference. First operand has 258 places, 437 transitions, 4803 flow. Second operand 10 states and 1145 transitions. [2021-11-20 06:13:26,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 480 transitions, 5723 flow [2021-11-20 06:13:27,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 480 transitions, 5548 flow, removed 41 selfloop flow, removed 7 redundant places. [2021-11-20 06:13:27,153 INFO L242 Difference]: Finished difference. Result has 263 places, 441 transitions, 5258 flow [2021-11-20 06:13:27,154 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=4632, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5258, PETRI_PLACES=263, PETRI_TRANSITIONS=441} [2021-11-20 06:13:27,155 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 126 predicate places. [2021-11-20 06:13:27,155 INFO L470 AbstractCegarLoop]: Abstraction has has 263 places, 441 transitions, 5258 flow [2021-11-20 06:13:27,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 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) [2021-11-20 06:13:27,156 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:13:27,156 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:27,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:27,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 06:13:27,384 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:13:27,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:27,385 INFO L85 PathProgramCache]: Analyzing trace with hash 603612820, now seen corresponding path program 1 times [2021-11-20 06:13:27,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:27,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915331398] [2021-11-20 06:13:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:27,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:27,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:27,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915331398] [2021-11-20 06:13:27,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915331398] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:27,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525079807] [2021-11-20 06:13:27,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:27,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:27,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:27,465 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:27,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 06:13:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:27,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:13:27,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:27,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:13:28,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:28,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525079807] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:28,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:13:28,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2021-11-20 06:13:28,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789182508] [2021-11-20 06:13:28,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:28,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:13:28,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:28,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:13:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:13:28,366 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 153 [2021-11-20 06:13:28,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 441 transitions, 5258 flow. Second operand has 7 states, 7 states have (on average 116.71428571428571) internal successors, (817), 7 states have internal predecessors, (817), 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) [2021-11-20 06:13:28,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:13:28,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 153 [2021-11-20 06:13:28,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:13:29,793 INFO L129 PetriNetUnfolder]: 2244/5023 cut-off events. [2021-11-20 06:13:29,793 INFO L130 PetriNetUnfolder]: For 55275/56346 co-relation queries the response was YES. [2021-11-20 06:13:29,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24173 conditions, 5023 events. 2244/5023 cut-off events. For 55275/56346 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 40992 event pairs, 624 based on Foata normal form. 318/5157 useless extension candidates. Maximal degree in co-relation 24113. Up to 1581 conditions per place. [2021-11-20 06:13:30,124 INFO L132 encePairwiseOnDemand]: 145/153 looper letters, 169 selfloop transitions, 84 changer transitions 0/495 dead transitions. [2021-11-20 06:13:30,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 495 transitions, 6573 flow [2021-11-20 06:13:30,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:13:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 06:13:30,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2021-11-20 06:13:30,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7759103641456583 [2021-11-20 06:13:30,127 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2021-11-20 06:13:30,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2021-11-20 06:13:30,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:13:30,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2021-11-20 06:13:30,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:13:30,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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) [2021-11-20 06:13:30,137 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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) [2021-11-20 06:13:30,137 INFO L186 Difference]: Start difference. First operand has 263 places, 441 transitions, 5258 flow. Second operand 7 states and 831 transitions. [2021-11-20 06:13:30,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 495 transitions, 6573 flow [2021-11-20 06:13:30,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 495 transitions, 6190 flow, removed 59 selfloop flow, removed 12 redundant places. [2021-11-20 06:13:30,443 INFO L242 Difference]: Finished difference. Result has 258 places, 441 transitions, 5186 flow [2021-11-20 06:13:30,444 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=4933, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5186, PETRI_PLACES=258, PETRI_TRANSITIONS=441} [2021-11-20 06:13:30,444 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 121 predicate places. [2021-11-20 06:13:30,445 INFO L470 AbstractCegarLoop]: Abstraction has has 258 places, 441 transitions, 5186 flow [2021-11-20 06:13:30,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.71428571428571) internal successors, (817), 7 states have internal predecessors, (817), 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) [2021-11-20 06:13:30,445 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:13:30,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:30,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:30,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:30,649 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:13:30,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:30,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1712583142, now seen corresponding path program 1 times [2021-11-20 06:13:30,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:30,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468041514] [2021-11-20 06:13:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:30,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:31,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:31,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468041514] [2021-11-20 06:13:31,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468041514] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:31,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312489700] [2021-11-20 06:13:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:31,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:31,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:31,047 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:31,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 06:13:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:31,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-20 06:13:31,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:32,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:13:32,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-20 06:13:32,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-20 06:13:32,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-20 06:13:32,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 06:13:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:33,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:13:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:13:34,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312489700] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:13:34,111 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:13:34,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21, 9] total 34 [2021-11-20 06:13:34,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629583413] [2021-11-20 06:13:34,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:13:34,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-20 06:13:34,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:34,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-20 06:13:34,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 06:13:34,118 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 153 [2021-11-20 06:13:34,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 441 transitions, 5186 flow. Second operand has 34 states, 34 states have (on average 72.58823529411765) internal successors, (2468), 34 states have internal predecessors, (2468), 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) [2021-11-20 06:13:34,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:13:34,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 153 [2021-11-20 06:13:34,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:13:39,536 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([581] L68-->L70: Formula: (let ((.cse0 (+ |v_thread3Thread1of1ForFork1_plus_~a#1_1| |v_thread3Thread1of1ForFork1_plus_~b#1_1|))) (and (= .cse0 |v_thread3Thread1of1ForFork1_plus_#res#1_1|) (not (= |v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1| 0)) (= |v_thread3Thread1of1ForFork1_plus_#res#1_1| v_~res2~0_57) (not (= 0 (ite (or (<= 0 (+ |v_thread3Thread1of1ForFork1_plus_~a#1_1| |v_thread3Thread1of1ForFork1_plus_~b#1_1| 2147483648)) (<= 0 |v_thread3Thread1of1ForFork1_plus_~b#1_1|)) 1 0))) (= |v_thread3Thread1of1ForFork1_plus_#in~b#1_1| |v_thread3Thread1of1ForFork1_plus_~b#1_1|) (<= 0 (+ |v_thread3Thread1of1ForFork1_plus_#res#1_1| 2147483648)) (= |v_thread3Thread1of1ForFork1_plus_#in~a#1_1| v_~res2~0_58) (= (select (select |v_#memory_int_51| v_~A~0.base_40) (+ (* |v_thread3Thread1of1ForFork1_~i~2#1_7| 4) v_~A~0.offset_40)) |v_thread3Thread1of1ForFork1_plus_#in~b#1_1|) (= |v_thread3Thread1of1ForFork1_plus_#in~a#1_1| |v_thread3Thread1of1ForFork1_plus_~a#1_1|) (= |v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1| |v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|) (<= |v_thread3Thread1of1ForFork1_plus_#res#1_1| 2147483647) (= |v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1| (ite (or (<= |v_thread3Thread1of1ForFork1_plus_~b#1_1| 0) (<= .cse0 2147483647)) 1 0)))) InVars {#memory_int=|v_#memory_int_51|, ~A~0.base=v_~A~0.base_40, ~A~0.offset=v_~A~0.offset_40, thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_7|, ~res2~0=v_~res2~0_58} OutVars{thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, ~A~0.base=v_~A~0.base_40, thread3Thread1of1ForFork1_#t~ret9#1=|v_thread3Thread1of1ForFork1_#t~ret9#1_1|, thread3Thread1of1ForFork1_plus_#res#1=|v_thread3Thread1of1ForFork1_plus_#res#1_1|, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread3Thread1of1ForFork1_plus_#in~a#1=|v_thread3Thread1of1ForFork1_plus_#in~a#1_1|, thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_7|, thread3Thread1of1ForFork1_plus_~a#1=|v_thread3Thread1of1ForFork1_plus_~a#1_1|, ~A~0.offset=v_~A~0.offset_40, thread3Thread1of1ForFork1_plus_#in~b#1=|v_thread3Thread1of1ForFork1_plus_#in~b#1_1|, #memory_int=|v_#memory_int_51|, thread3Thread1of1ForFork1_plus_~b#1=|v_thread3Thread1of1ForFork1_plus_~b#1_1|, thread3Thread1of1ForFork1_#t~mem8#1=|v_thread3Thread1of1ForFork1_#t~mem8#1_1|, ~res2~0=v_~res2~0_57} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread3Thread1of1ForFork1_plus_~a#1, thread3Thread1of1ForFork1_#t~ret9#1, thread3Thread1of1ForFork1_plus_#res#1, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1, thread3Thread1of1ForFork1_plus_#in~b#1, thread3Thread1of1ForFork1_plus_#in~a#1, thread3Thread1of1ForFork1_plus_~b#1, thread3Thread1of1ForFork1_#t~mem8#1, ~res2~0][369], [154#true, 18#L57-2true, 984#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 164#(and (= ~res2~0 ~res1~0) (= ~res1~0 0)), 4777#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (< 0 ~M~0))), Black: 4775#(and (<= 1 ~N~0) (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (< 0 ~M~0)) (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0))), Black: 4773#(and (<= 1 ~N~0) (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (< 0 ~M~0))), 97#L70true, 4038#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) (+ ~N~0 ~M~0)) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 183#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), Black: 4030#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0))), 157#true, Black: 3267#(and (or (< 0 ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (<= 1 ~N~0)), Black: 4018#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 3269#(and (or (< 0 ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (<= 1 ~N~0)), Black: 3998#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 4034#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0))), Black: 3996#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 4032#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 4028#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 4023#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1733#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 1725#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), 2519#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1713#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1719#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 982#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 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tUnfolder$Statistics]: this new event has 112 ancestors and is cut-off event [2021-11-20 06:13:39,538 INFO L387 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2021-11-20 06:13:39,538 INFO L387 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2021-11-20 06:13:39,538 INFO L387 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2021-11-20 06:13:39,539 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([574] L57-2-->L57-3: Formula: (= |v_thread2Thread1of1ForFork0_~i~1#1_11| (+ |v_thread2Thread1of1ForFork0_#t~post4#1_3| 1)) InVars {thread2Thread1of1ForFork0_#t~post4#1=|v_thread2Thread1of1ForFork0_#t~post4#1_3|} OutVars{thread2Thread1of1ForFork0_#t~post4#1=|v_thread2Thread1of1ForFork0_#t~post4#1_3|, thread2Thread1of1ForFork0_~i~1#1=|v_thread2Thread1of1ForFork0_~i~1#1_11|} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_~i~1#1][856], [154#true, 4773#(and (<= 1 ~N~0) 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|ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1713#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1719#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 982#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= ~M~0 0)), Black: 978#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= ~M~0 0)), Black: 1731#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 984#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), 23#L68true, Black: 1741#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 970#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 976#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1737#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 1729#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 2501#(and (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1723#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2503#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2505#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), 37#L90-2true, Black: 1727#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 2521#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1711#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2517#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |thread3Thread1of1ForFork1_~i~2#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1735#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2509#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2488#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2493#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2495#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2523#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |thread3Thread1of1ForFork1_~i~2#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2499#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2497#(and (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2515#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2490#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), 5500#true, 4788#(<= 1 ~N~0), 2511#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0))]) [2021-11-20 06:13:39,540 INFO L384 tUnfolder$Statistics]: this new event has 112 ancestors and is cut-off event [2021-11-20 06:13:39,540 INFO L387 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2021-11-20 06:13:39,541 INFO L387 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2021-11-20 06:13:39,541 INFO L387 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2021-11-20 06:13:39,591 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([581] L68-->L70: Formula: (let ((.cse0 (+ |v_thread3Thread1of1ForFork1_plus_~a#1_1| |v_thread3Thread1of1ForFork1_plus_~b#1_1|))) (and (= .cse0 |v_thread3Thread1of1ForFork1_plus_#res#1_1|) (not (= |v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1| 0)) (= |v_thread3Thread1of1ForFork1_plus_#res#1_1| v_~res2~0_57) (not (= 0 (ite (or (<= 0 (+ |v_thread3Thread1of1ForFork1_plus_~a#1_1| |v_thread3Thread1of1ForFork1_plus_~b#1_1| 2147483648)) (<= 0 |v_thread3Thread1of1ForFork1_plus_~b#1_1|)) 1 0))) (= |v_thread3Thread1of1ForFork1_plus_#in~b#1_1| |v_thread3Thread1of1ForFork1_plus_~b#1_1|) (<= 0 (+ |v_thread3Thread1of1ForFork1_plus_#res#1_1| 2147483648)) (= |v_thread3Thread1of1ForFork1_plus_#in~a#1_1| v_~res2~0_58) (= (select (select |v_#memory_int_51| v_~A~0.base_40) (+ (* |v_thread3Thread1of1ForFork1_~i~2#1_7| 4) v_~A~0.offset_40)) |v_thread3Thread1of1ForFork1_plus_#in~b#1_1|) (= |v_thread3Thread1of1ForFork1_plus_#in~a#1_1| |v_thread3Thread1of1ForFork1_plus_~a#1_1|) (= |v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1| |v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|) (<= |v_thread3Thread1of1ForFork1_plus_#res#1_1| 2147483647) (= |v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1| (ite (or (<= |v_thread3Thread1of1ForFork1_plus_~b#1_1| 0) (<= .cse0 2147483647)) 1 0)))) InVars {#memory_int=|v_#memory_int_51|, ~A~0.base=v_~A~0.base_40, ~A~0.offset=v_~A~0.offset_40, thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_7|, ~res2~0=v_~res2~0_58} OutVars{thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, ~A~0.base=v_~A~0.base_40, thread3Thread1of1ForFork1_#t~ret9#1=|v_thread3Thread1of1ForFork1_#t~ret9#1_1|, thread3Thread1of1ForFork1_plus_#res#1=|v_thread3Thread1of1ForFork1_plus_#res#1_1|, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread3Thread1of1ForFork1_plus_#in~a#1=|v_thread3Thread1of1ForFork1_plus_#in~a#1_1|, thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_7|, thread3Thread1of1ForFork1_plus_~a#1=|v_thread3Thread1of1ForFork1_plus_~a#1_1|, ~A~0.offset=v_~A~0.offset_40, thread3Thread1of1ForFork1_plus_#in~b#1=|v_thread3Thread1of1ForFork1_plus_#in~b#1_1|, #memory_int=|v_#memory_int_51|, thread3Thread1of1ForFork1_plus_~b#1=|v_thread3Thread1of1ForFork1_plus_~b#1_1|, thread3Thread1of1ForFork1_#t~mem8#1=|v_thread3Thread1of1ForFork1_#t~mem8#1_1|, ~res2~0=v_~res2~0_57} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread3Thread1of1ForFork1_plus_~a#1, thread3Thread1of1ForFork1_#t~ret9#1, thread3Thread1of1ForFork1_plus_#res#1, thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1, thread3Thread1of1ForFork1_plus_#in~b#1, thread3Thread1of1ForFork1_plus_#in~a#1, thread3Thread1of1ForFork1_plus_~b#1, thread3Thread1of1ForFork1_#t~mem8#1, ~res2~0][369], [18#L57-2true, 154#true, 984#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 164#(and (= ~res2~0 ~res1~0) (= ~res1~0 0)), Black: 4775#(and (<= 1 ~N~0) (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (< 0 ~M~0)) (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0))), 4777#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (< 0 ~M~0))), 97#L70true, Black: 4773#(and (<= 1 ~N~0) (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (< 0 ~M~0))), 4038#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) (+ ~N~0 ~M~0)) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), 40#L91-1true, Black: 183#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), Black: 4030#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0))), 157#true, Black: 3267#(and (or (< 0 ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (<= 1 ~N~0)), Black: 4018#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 3269#(and (or (< 0 ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (<= 1 ~N~0)), Black: 3998#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 4034#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0))), Black: 3996#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 4032#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 4028#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 4023#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1733#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 1725#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), 2519#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1713#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1719#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 982#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= 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tUnfolder$Statistics]: this new event has 114 ancestors and is cut-off event [2021-11-20 06:13:39,591 INFO L387 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2021-11-20 06:13:39,592 INFO L387 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2021-11-20 06:13:39,592 INFO L387 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2021-11-20 06:13:39,592 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([574] L57-2-->L57-3: Formula: (= |v_thread2Thread1of1ForFork0_~i~1#1_11| (+ |v_thread2Thread1of1ForFork0_#t~post4#1_3| 1)) InVars {thread2Thread1of1ForFork0_#t~post4#1=|v_thread2Thread1of1ForFork0_#t~post4#1_3|} OutVars{thread2Thread1of1ForFork0_#t~post4#1=|v_thread2Thread1of1ForFork0_#t~post4#1_3|, thread2Thread1of1ForFork0_~i~1#1=|v_thread2Thread1of1ForFork0_~i~1#1_11|} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_~i~1#1][856], [154#true, 4773#(and (<= 1 ~N~0) 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|ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1713#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1719#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 982#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= ~M~0 0)), Black: 978#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= ~M~0 0)), Black: 1731#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 984#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), 23#L68true, Black: 1741#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 970#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 976#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1737#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 1729#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 2501#(and (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1723#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2503#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2505#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1727#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 1 ~M~0)), Black: 2521#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1711#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2517#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |thread3Thread1of1ForFork1_~i~2#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 1735#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2509#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2488#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2493#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2495#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2523#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |thread3Thread1of1ForFork1_~i~2#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2499#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2497#(and (or (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0)) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2515#(and (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0) (<= |thread3Thread1of1ForFork1_~i~2#1| ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), Black: 2490#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0)), 5500#true, 4788#(<= 1 ~N~0), 2511#(and (<= 0 |thread1Thread1of1ForFork2_~i~0#1|) (<= 1 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= (+ |thread3Thread1of1ForFork1_~i~2#1| 1) ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0))]) [2021-11-20 06:13:39,593 INFO L384 tUnfolder$Statistics]: this new event has 114 ancestors and is cut-off event [2021-11-20 06:13:39,593 INFO L387 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2021-11-20 06:13:39,593 INFO L387 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2021-11-20 06:13:39,593 INFO L387 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2021-11-20 06:13:39,894 INFO L129 PetriNetUnfolder]: 9699/17891 cut-off events. [2021-11-20 06:13:39,894 INFO L130 PetriNetUnfolder]: For 159382/160625 co-relation queries the response was YES. [2021-11-20 06:13:40,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81969 conditions, 17891 events. 9699/17891 cut-off events. For 159382/160625 co-relation queries the response was YES. Maximal size of possible extension queue 1006. Compared 156536 event pairs, 1671 based on Foata normal form. 252/17732 useless extension candidates. Maximal degree in co-relation 81914. Up to 8459 conditions per place. [2021-11-20 06:13:40,236 INFO L132 encePairwiseOnDemand]: 127/153 looper letters, 566 selfloop transitions, 173 changer transitions 4/902 dead transitions. [2021-11-20 06:13:40,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 902 transitions, 12516 flow [2021-11-20 06:13:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 06:13:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-20 06:13:40,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2115 transitions. [2021-11-20 06:13:40,241 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.49369747899159666 [2021-11-20 06:13:40,241 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2115 transitions. [2021-11-20 06:13:40,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2115 transitions. [2021-11-20 06:13:40,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:13:40,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2115 transitions. [2021-11-20 06:13:40,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 75.53571428571429) internal successors, (2115), 28 states have internal predecessors, (2115), 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) [2021-11-20 06:13:40,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 153.0) internal successors, (4437), 29 states have internal predecessors, (4437), 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) [2021-11-20 06:13:40,256 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 153.0) internal successors, (4437), 29 states have internal predecessors, (4437), 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) [2021-11-20 06:13:40,257 INFO L186 Difference]: Start difference. First operand has 258 places, 441 transitions, 5186 flow. Second operand 28 states and 2115 transitions. [2021-11-20 06:13:40,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 902 transitions, 12516 flow [2021-11-20 06:13:41,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 902 transitions, 12331 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-11-20 06:13:41,830 INFO L242 Difference]: Finished difference. Result has 292 places, 595 transitions, 8075 flow [2021-11-20 06:13:41,831 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=5097, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8075, PETRI_PLACES=292, PETRI_TRANSITIONS=595} [2021-11-20 06:13:41,832 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 155 predicate places. [2021-11-20 06:13:41,832 INFO L470 AbstractCegarLoop]: Abstraction has has 292 places, 595 transitions, 8075 flow [2021-11-20 06:13:41,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 72.58823529411765) internal successors, (2468), 34 states have internal predecessors, (2468), 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) [2021-11-20 06:13:41,833 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:13:41,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:41,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:42,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 06:13:42,034 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:13:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:42,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1343336622, now seen corresponding path program 1 times [2021-11-20 06:13:42,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:42,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778867000] [2021-11-20 06:13:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:42,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:42,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:42,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778867000] [2021-11-20 06:13:42,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778867000] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:42,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93083611] [2021-11-20 06:13:42,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:42,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:42,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:42,944 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:42,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 06:13:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:43,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-20 06:13:43,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:45,068 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-20 06:13:45,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2021-11-20 06:13:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:45,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:13:45,763 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:13:45,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 39 [2021-11-20 06:13:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:47,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93083611] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:13:47,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:13:47,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 19] total 58 [2021-11-20 06:13:47,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175828538] [2021-11-20 06:13:47,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:13:47,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-20 06:13:47,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:47,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-20 06:13:47,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=2841, Unknown=0, NotChecked=0, Total=3306 [2021-11-20 06:13:47,830 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 153 [2021-11-20 06:13:47,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 595 transitions, 8075 flow. Second operand has 58 states, 58 states have (on average 71.05172413793103) internal successors, (4121), 58 states have internal predecessors, (4121), 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) [2021-11-20 06:13:47,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:13:47,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 153 [2021-11-20 06:13:47,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:14:02,967 INFO L129 PetriNetUnfolder]: 20556/35590 cut-off events. [2021-11-20 06:14:02,967 INFO L130 PetriNetUnfolder]: For 290629/291459 co-relation queries the response was YES. [2021-11-20 06:14:03,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171280 conditions, 35590 events. 20556/35590 cut-off events. For 290629/291459 co-relation queries the response was YES. Maximal size of possible extension queue 1987. Compared 324020 event pairs, 3803 based on Foata normal form. 600/35743 useless extension candidates. Maximal degree in co-relation 171213. Up to 14563 conditions per place. [2021-11-20 06:14:03,672 INFO L132 encePairwiseOnDemand]: 110/153 looper letters, 1229 selfloop transitions, 517 changer transitions 12/1919 dead transitions. [2021-11-20 06:14:03,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 1919 transitions, 28700 flow [2021-11-20 06:14:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-20 06:14:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-11-20 06:14:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3964 transitions. [2021-11-20 06:14:03,680 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.49824032176973354 [2021-11-20 06:14:03,681 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3964 transitions. [2021-11-20 06:14:03,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3964 transitions. [2021-11-20 06:14:03,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:14:03,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3964 transitions. [2021-11-20 06:14:03,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 76.23076923076923) internal successors, (3964), 52 states have internal predecessors, (3964), 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) [2021-11-20 06:14:03,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 153.0) internal successors, (8109), 53 states have internal predecessors, (8109), 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) [2021-11-20 06:14:03,713 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 153.0) internal successors, (8109), 53 states have internal predecessors, (8109), 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) [2021-11-20 06:14:03,713 INFO L186 Difference]: Start difference. First operand has 292 places, 595 transitions, 8075 flow. Second operand 52 states and 3964 transitions. [2021-11-20 06:14:03,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 1919 transitions, 28700 flow [2021-11-20 06:14:10,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 1919 transitions, 28368 flow, removed 109 selfloop flow, removed 17 redundant places. [2021-11-20 06:14:10,106 INFO L242 Difference]: Finished difference. Result has 353 places, 1114 transitions, 17112 flow [2021-11-20 06:14:10,107 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=7970, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=17112, PETRI_PLACES=353, PETRI_TRANSITIONS=1114} [2021-11-20 06:14:10,108 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 216 predicate places. [2021-11-20 06:14:10,108 INFO L470 AbstractCegarLoop]: Abstraction has has 353 places, 1114 transitions, 17112 flow [2021-11-20 06:14:10,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 71.05172413793103) internal successors, (4121), 58 states have internal predecessors, (4121), 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) [2021-11-20 06:14:10,110 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:14:10,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:10,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-20 06:14:10,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:10,324 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:14:10,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:10,325 INFO L85 PathProgramCache]: Analyzing trace with hash -711719530, now seen corresponding path program 2 times [2021-11-20 06:14:10,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:10,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929801924] [2021-11-20 06:14:10,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:10,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:14:10,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:10,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929801924] [2021-11-20 06:14:10,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929801924] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:14:10,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748907351] [2021-11-20 06:14:10,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:14:10,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:10,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:10,985 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:14:10,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 06:14:11,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:14:11,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:14:11,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-20 06:14:11,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:12,234 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 06:14:12,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-20 06:14:12,378 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 06:14:12,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-20 06:14:12,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-20 06:14:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:14:12,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:14:13,798 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre17#1| Int)) (<= c_~res1~0 (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre17#1|)) c_~A~0.base) c_~A~0.offset)))) (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre17#1| Int)) (< (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre17#1|)) c_~A~0.base) c_~A~0.offset)) (+ c_~res1~0 1)))) is different from false [2021-11-20 06:14:18,235 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:14:18,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 254 treesize of output 194 [2021-11-20 06:14:18,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:14:18,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:14:18,540 INFO L354 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-11-20 06:14:18,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 13 [2021-11-20 06:14:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:14:19,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748907351] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:14:19,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:14:19,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 18] total 40 [2021-11-20 06:14:19,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321422815] [2021-11-20 06:14:19,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:14:19,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-20 06:14:19,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:19,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-20 06:14:19,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1311, Unknown=1, NotChecked=74, Total=1560 [2021-11-20 06:14:19,731 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 153 [2021-11-20 06:14:19,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 1114 transitions, 17112 flow. Second operand has 40 states, 40 states have (on average 78.1) internal successors, (3124), 40 states have internal predecessors, (3124), 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) [2021-11-20 06:14:19,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:14:19,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 153 [2021-11-20 06:14:19,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:14:35,507 INFO L129 PetriNetUnfolder]: 19822/36479 cut-off events. [2021-11-20 06:14:35,509 INFO L130 PetriNetUnfolder]: For 397399/400260 co-relation queries the response was YES. [2021-11-20 06:14:36,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 191959 conditions, 36479 events. 19822/36479 cut-off events. For 397399/400260 co-relation queries the response was YES. Maximal size of possible extension queue 2055. Compared 353061 event pairs, 1249 based on Foata normal form. 627/36309 useless extension candidates. Maximal degree in co-relation 191867. Up to 14713 conditions per place. [2021-11-20 06:14:36,758 INFO L132 encePairwiseOnDemand]: 132/153 looper letters, 634 selfloop transitions, 488 changer transitions 4/1544 dead transitions. [2021-11-20 06:14:36,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 1544 transitions, 25588 flow [2021-11-20 06:14:36,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 06:14:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-20 06:14:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2148 transitions. [2021-11-20 06:14:36,763 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5399698340874811 [2021-11-20 06:14:36,763 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2148 transitions. [2021-11-20 06:14:36,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2148 transitions. [2021-11-20 06:14:36,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:14:36,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2148 transitions. [2021-11-20 06:14:36,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 82.61538461538461) internal successors, (2148), 26 states have internal predecessors, (2148), 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) [2021-11-20 06:14:36,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 153.0) internal successors, (4131), 27 states have internal predecessors, (4131), 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) [2021-11-20 06:14:36,777 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 153.0) internal successors, (4131), 27 states have internal predecessors, (4131), 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) [2021-11-20 06:14:36,777 INFO L186 Difference]: Start difference. First operand has 353 places, 1114 transitions, 17112 flow. Second operand 26 states and 2148 transitions. [2021-11-20 06:14:36,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 1544 transitions, 25588 flow [2021-11-20 06:14:45,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 1544 transitions, 25446 flow, removed 62 selfloop flow, removed 12 redundant places. [2021-11-20 06:14:45,554 INFO L242 Difference]: Finished difference. Result has 370 places, 1249 transitions, 20817 flow [2021-11-20 06:14:45,556 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=16984, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=20817, PETRI_PLACES=370, PETRI_TRANSITIONS=1249} [2021-11-20 06:14:45,557 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 233 predicate places. [2021-11-20 06:14:45,557 INFO L470 AbstractCegarLoop]: Abstraction has has 370 places, 1249 transitions, 20817 flow [2021-11-20 06:14:45,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 78.1) internal successors, (3124), 40 states have internal predecessors, (3124), 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) [2021-11-20 06:14:45,557 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:14:45,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:45,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:45,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 06:14:45,784 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 06:14:45,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash 549050894, now seen corresponding path program 2 times [2021-11-20 06:14:45,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:45,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188156863] [2021-11-20 06:14:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:45,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:14:46,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:46,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188156863] [2021-11-20 06:14:46,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188156863] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:14:46,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768214553] [2021-11-20 06:14:46,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:14:46,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:46,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:46,782 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:14:46,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fae30e8-4476-4df4-84b7-f370ca393375/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 06:14:46,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:14:46,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:14:46,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-20 06:14:46,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:46,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:14:47,160 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:14:47,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 06:14:48,003 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 06:14:48,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 06:14:48,243 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:14:48,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-20 06:14:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:14:48,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:14:52,310 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:14:52,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 108 [2021-11-20 06:14:53,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2021-11-20 06:14:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:14:53,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768214553] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:14:53,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:14:53,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23, 22] total 58 [2021-11-20 06:14:53,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010898509] [2021-11-20 06:14:53,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:14:53,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-20 06:14:53,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:53,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-20 06:14:53,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=2956, Unknown=0, NotChecked=0, Total=3306 [2021-11-20 06:14:53,903 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 153 [2021-11-20 06:14:53,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 1249 transitions, 20817 flow. Second operand has 58 states, 58 states have (on average 57.41379310344828) internal successors, (3330), 58 states have internal predecessors, (3330), 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) [2021-11-20 06:14:53,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:14:53,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 153 [2021-11-20 06:14:53,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand