./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.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_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/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_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/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_507856c2-ce64-47ff-919f-4adf1244ce84/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 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:36:56,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:36:56,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:36:56,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:36:56,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:36:56,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:36:56,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:36:56,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:36:56,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:36:56,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:36:56,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:36:56,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:36:56,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:36:56,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:36:56,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:36:56,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:36:56,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:36:56,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:36:56,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:36:56,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:36:56,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:36:56,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:36:56,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:36:56,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:36:56,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:36:56,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:36:56,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:36:56,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:36:56,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:36:56,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:36:56,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:36:56,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:36:56,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:36:56,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:36:56,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:36:56,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:36:56,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:36:56,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:36:56,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:36:56,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:36:56,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:36:56,179 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:36:56,211 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:36:56,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:36:56,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:36:56,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:36:56,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:36:56,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:36:56,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:36:56,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:36:56,214 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:36:56,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:36:56,215 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:36:56,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:36:56,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:36:56,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:36:56,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:36:56,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:36:56,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:36:56,216 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:36:56,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:36:56,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:36:56,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:36:56,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:36:56,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:36:56,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:36:56,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:36:56,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:36:56,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:36:56,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:36:56,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:36:56,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:36:56,219 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:36:56,219 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:36:56,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:36:56,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:36:56,220 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_507856c2-ce64-47ff-919f-4adf1244ce84/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d [2021-11-20 05:36:56,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:36:56,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:36:56,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:36:56,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:36:56,520 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:36:56,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2021-11-20 05:36:56,604 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/data/5049e5062/2da35f01a500472a81ad515a86af055a/FLAGf5beaf22c [2021-11-20 05:36:57,094 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:36:57,095 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2021-11-20 05:36:57,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/data/5049e5062/2da35f01a500472a81ad515a86af055a/FLAGf5beaf22c [2021-11-20 05:36:57,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/data/5049e5062/2da35f01a500472a81ad515a86af055a [2021-11-20 05:36:57,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:36:57,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:36:57,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:36:57,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:36:57,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:36:57,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:36:57" (1/1) ... [2021-11-20 05:36:57,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aede7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:57, skipping insertion in model container [2021-11-20 05:36:57,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:36:57" (1/1) ... [2021-11-20 05:36:57,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:36:57,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:36:57,866 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_507856c2-ce64-47ff-919f-4adf1244ce84/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2021-11-20 05:36:57,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:36:57,887 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:36:57,918 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_507856c2-ce64-47ff-919f-4adf1244ce84/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2021-11-20 05:36:57,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:36:57,935 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:36:57,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:57 WrapperNode [2021-11-20 05:36:57,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:36:57,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:36:57,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:36:57,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:36:57,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:57" (1/1) ... [2021-11-20 05:36:57,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:57" (1/1) ... [2021-11-20 05:36:57,990 INFO L137 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 317 [2021-11-20 05:36:57,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:36:57,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:36:57,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:36:57,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:36:58,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:57" (1/1) ... [2021-11-20 05:36:58,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:57" (1/1) ... [2021-11-20 05:36:58,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:57" (1/1) ... [2021-11-20 05:36:58,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:57" (1/1) ... [2021-11-20 05:36:58,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:57" (1/1) ... [2021-11-20 05:36:58,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:57" (1/1) ... [2021-11-20 05:36:58,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:57" (1/1) ... [2021-11-20 05:36:58,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:36:58,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:36:58,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:36:58,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:36:58,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:57" (1/1) ... [2021-11-20 05:36:58,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:36:58,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:36:58,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:36:58,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:36:58,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:36:58,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:36:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:36:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:36:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-20 05:36:58,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-20 05:36:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-20 05:36:58,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-20 05:36:58,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-20 05:36:58,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-20 05:36:58,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:36:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-20 05:36:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-20 05:36:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:36:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:36:58,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:36:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:36:58,131 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 05:36:58,228 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:36:58,230 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:36:58,806 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:36:58,995 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:36:58,996 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-20 05:36:58,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:36:58 BoogieIcfgContainer [2021-11-20 05:36:58,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:36:59,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:36:59,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:36:59,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:36:59,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:36:57" (1/3) ... [2021-11-20 05:36:59,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d59cbb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:36:59, skipping insertion in model container [2021-11-20 05:36:59,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:57" (2/3) ... [2021-11-20 05:36:59,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d59cbb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:36:59, skipping insertion in model container [2021-11-20 05:36:59,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:36:58" (3/3) ... [2021-11-20 05:36:59,013 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2021-11-20 05:36:59,020 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 05:36:59,020 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:36:59,020 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:36:59,020 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 05:36:59,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,091 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,098 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,098 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,099 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,099 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,099 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,100 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,103 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,103 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,103 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,103 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,103 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,103 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,112 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,112 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,113 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,113 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,113 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,114 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,115 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,121 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,121 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,121 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,121 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,122 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,127 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,130 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,130 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,130 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,130 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,130 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,130 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,130 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,131 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,131 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,131 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,131 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,133 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,133 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,133 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,133 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,133 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,134 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,134 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,134 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,134 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,134 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,134 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,134 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,135 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,135 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,135 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,135 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,135 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,135 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,136 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,136 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,137 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,137 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,137 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,137 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~short17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,137 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,138 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,138 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,138 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,138 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,139 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,139 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~short17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,139 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,139 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,140 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,140 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,141 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,141 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,141 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,141 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,143 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,143 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,144 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,150 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,150 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,151 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,151 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,151 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,151 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,151 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,151 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,153 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,153 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,153 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,153 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,155 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,155 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,155 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,155 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,155 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,155 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,157 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,157 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,157 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,157 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~short17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:36:59,162 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-20 05:36:59,259 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:36:59,266 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 05:36:59,267 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-20 05:36:59,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 264 places, 279 transitions, 582 flow [2021-11-20 05:36:59,432 INFO L129 PetriNetUnfolder]: 25/276 cut-off events. [2021-11-20 05:36:59,433 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-20 05:36:59,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 276 events. 25/276 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 236. Up to 4 conditions per place. [2021-11-20 05:36:59,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 279 transitions, 582 flow [2021-11-20 05:36:59,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 265 transitions, 548 flow [2021-11-20 05:36:59,542 INFO L129 PetriNetUnfolder]: 25/264 cut-off events. [2021-11-20 05:36:59,543 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-20 05:36:59,543 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:36:59,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:59,550 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 05:36:59,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:36:59,560 INFO L85 PathProgramCache]: Analyzing trace with hash 457812310, now seen corresponding path program 1 times [2021-11-20 05:36:59,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:36:59,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227313010] [2021-11-20 05:36:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:36:59,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:36:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:36:59,966 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 05:36:59,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:36:59,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227313010] [2021-11-20 05:36:59,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227313010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:36:59,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:36:59,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:36:59,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773332290] [2021-11-20 05:36:59,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:36:59,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 05:36:59,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:37:00,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 05:37:00,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 05:37:00,017 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 279 [2021-11-20 05:37:00,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 265 transitions, 548 flow. Second operand has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 0 states have call successors, (0), 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 05:37:00,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:37:00,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 279 [2021-11-20 05:37:00,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:37:00,236 INFO L129 PetriNetUnfolder]: 138/578 cut-off events. [2021-11-20 05:37:00,236 INFO L130 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2021-11-20 05:37:00,242 INFO L84 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 578 events. 138/578 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2010 event pairs, 55 based on Foata normal form. 106/615 useless extension candidates. Maximal degree in co-relation 561. Up to 180 conditions per place. [2021-11-20 05:37:00,247 INFO L132 encePairwiseOnDemand]: 262/279 looper letters, 13 selfloop transitions, 0 changer transitions 8/248 dead transitions. [2021-11-20 05:37:00,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 248 transitions, 540 flow [2021-11-20 05:37:00,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 05:37:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-20 05:37:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 526 transitions. [2021-11-20 05:37:00,269 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.942652329749104 [2021-11-20 05:37:00,270 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 526 transitions. [2021-11-20 05:37:00,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 526 transitions. [2021-11-20 05:37:00,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:37:00,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 526 transitions. [2021-11-20 05:37:00,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 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 05:37:00,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:37:00,307 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:37:00,309 INFO L186 Difference]: Start difference. First operand has 250 places, 265 transitions, 548 flow. Second operand 2 states and 526 transitions. [2021-11-20 05:37:00,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 248 transitions, 540 flow [2021-11-20 05:37:00,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 248 transitions, 528 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-20 05:37:00,326 INFO L242 Difference]: Finished difference. Result has 245 places, 240 transitions, 486 flow [2021-11-20 05:37:00,328 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=486, PETRI_PLACES=245, PETRI_TRANSITIONS=240} [2021-11-20 05:37:00,335 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, -5 predicate places. [2021-11-20 05:37:00,335 INFO L470 AbstractCegarLoop]: Abstraction has has 245 places, 240 transitions, 486 flow [2021-11-20 05:37:00,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 0 states have call successors, (0), 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 05:37:00,336 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:37:00,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:00,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:37:00,337 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 05:37:00,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:00,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1216024931, now seen corresponding path program 1 times [2021-11-20 05:37:00,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:37:00,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230851396] [2021-11-20 05:37:00,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:00,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:37:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:00,731 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 05:37:00,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:37:00,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230851396] [2021-11-20 05:37:00,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230851396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:37:00,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:37:00,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:37:00,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207520112] [2021-11-20 05:37:00,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:37:00,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:37:00,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:37:00,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:37:00,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:37:00,738 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 279 [2021-11-20 05:37:00,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 240 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 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 05:37:00,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:37:00,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 279 [2021-11-20 05:37:00,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:37:00,894 INFO L129 PetriNetUnfolder]: 128/521 cut-off events. [2021-11-20 05:37:00,894 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-11-20 05:37:00,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 521 events. 128/521 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1679 event pairs, 21 based on Foata normal form. 8/484 useless extension candidates. Maximal degree in co-relation 716. Up to 133 conditions per place. [2021-11-20 05:37:00,900 INFO L132 encePairwiseOnDemand]: 274/279 looper letters, 23 selfloop transitions, 4 changer transitions 0/247 dead transitions. [2021-11-20 05:37:00,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 247 transitions, 556 flow [2021-11-20 05:37:00,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:37:00,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 05:37:00,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 751 transitions. [2021-11-20 05:37:00,904 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8972520908004779 [2021-11-20 05:37:00,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 751 transitions. [2021-11-20 05:37:00,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 751 transitions. [2021-11-20 05:37:00,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:37:00,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 751 transitions. [2021-11-20 05:37:00,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 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 05:37:00,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 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 05:37:00,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 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 05:37:00,912 INFO L186 Difference]: Start difference. First operand has 245 places, 240 transitions, 486 flow. Second operand 3 states and 751 transitions. [2021-11-20 05:37:00,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 247 transitions, 556 flow [2021-11-20 05:37:00,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 247 transitions, 556 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-20 05:37:00,921 INFO L242 Difference]: Finished difference. Result has 240 places, 241 transitions, 504 flow [2021-11-20 05:37:00,922 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=240, PETRI_TRANSITIONS=241} [2021-11-20 05:37:00,922 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, -10 predicate places. [2021-11-20 05:37:00,923 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 241 transitions, 504 flow [2021-11-20 05:37:00,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 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 05:37:00,924 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:37:00,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:00,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:37:00,924 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 05:37:00,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2020456479, now seen corresponding path program 2 times [2021-11-20 05:37:00,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:37:00,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771791434] [2021-11-20 05:37:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:00,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:37:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:01,089 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 05:37:01,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:37:01,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771791434] [2021-11-20 05:37:01,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771791434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:37:01,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:37:01,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:37:01,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211798521] [2021-11-20 05:37:01,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:37:01,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:37:01,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:37:01,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:37:01,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:37:01,095 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 279 [2021-11-20 05:37:01,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 241 transitions, 504 flow. Second operand has 6 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 0 states have call successors, (0), 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 05:37:01,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:37:01,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 279 [2021-11-20 05:37:01,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:37:01,411 INFO L129 PetriNetUnfolder]: 150/749 cut-off events. [2021-11-20 05:37:01,412 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2021-11-20 05:37:01,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1121 conditions, 749 events. 150/749 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2781 event pairs, 69 based on Foata normal form. 11/716 useless extension candidates. Maximal degree in co-relation 1116. Up to 220 conditions per place. [2021-11-20 05:37:01,419 INFO L132 encePairwiseOnDemand]: 268/279 looper letters, 49 selfloop transitions, 8 changer transitions 31/276 dead transitions. [2021-11-20 05:37:01,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 276 transitions, 753 flow [2021-11-20 05:37:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:37:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-20 05:37:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1970 transitions. [2021-11-20 05:37:01,426 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7845479888490641 [2021-11-20 05:37:01,427 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1970 transitions. [2021-11-20 05:37:01,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1970 transitions. [2021-11-20 05:37:01,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:37:01,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1970 transitions. [2021-11-20 05:37:01,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 218.88888888888889) internal successors, (1970), 9 states have internal predecessors, (1970), 0 states have call successors, (0), 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 05:37:01,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 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 05:37:01,445 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 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 05:37:01,445 INFO L186 Difference]: Start difference. First operand has 240 places, 241 transitions, 504 flow. Second operand 9 states and 1970 transitions. [2021-11-20 05:37:01,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 276 transitions, 753 flow [2021-11-20 05:37:01,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 276 transitions, 749 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-20 05:37:01,453 INFO L242 Difference]: Finished difference. Result has 249 places, 242 transitions, 530 flow [2021-11-20 05:37:01,454 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=530, PETRI_PLACES=249, PETRI_TRANSITIONS=242} [2021-11-20 05:37:01,455 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, -1 predicate places. [2021-11-20 05:37:01,455 INFO L470 AbstractCegarLoop]: Abstraction has has 249 places, 242 transitions, 530 flow [2021-11-20 05:37:01,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 0 states have call successors, (0), 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 05:37:01,457 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:37:01,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:01,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:37:01,458 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 05:37:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1682521090, now seen corresponding path program 1 times [2021-11-20 05:37:01,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:37:01,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398273453] [2021-11-20 05:37:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:01,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:37:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:37:01,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:37:01,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398273453] [2021-11-20 05:37:01,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398273453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:37:01,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:37:01,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:37:01,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166184363] [2021-11-20 05:37:01,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:37:01,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:37:01,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:37:01,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:37:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:37:01,685 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 279 [2021-11-20 05:37:01,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 242 transitions, 530 flow. Second operand has 6 states, 6 states have (on average 216.83333333333334) internal successors, (1301), 6 states have internal predecessors, (1301), 0 states have call successors, (0), 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 05:37:01,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:37:01,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 279 [2021-11-20 05:37:01,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:37:02,065 INFO L129 PetriNetUnfolder]: 200/800 cut-off events. [2021-11-20 05:37:02,066 INFO L130 PetriNetUnfolder]: For 127/127 co-relation queries the response was YES. [2021-11-20 05:37:02,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 800 events. 200/800 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3391 event pairs, 87 based on Foata normal form. 20/746 useless extension candidates. Maximal degree in co-relation 1325. Up to 181 conditions per place. [2021-11-20 05:37:02,075 INFO L132 encePairwiseOnDemand]: 270/279 looper letters, 51 selfloop transitions, 6 changer transitions 12/258 dead transitions. [2021-11-20 05:37:02,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 258 transitions, 715 flow [2021-11-20 05:37:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:37:02,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 05:37:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1538 transitions. [2021-11-20 05:37:02,080 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7875064004096262 [2021-11-20 05:37:02,081 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1538 transitions. [2021-11-20 05:37:02,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1538 transitions. [2021-11-20 05:37:02,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:37:02,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1538 transitions. [2021-11-20 05:37:02,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 219.71428571428572) internal successors, (1538), 7 states have internal predecessors, (1538), 0 states have call successors, (0), 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 05:37:02,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 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 05:37:02,095 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 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 05:37:02,095 INFO L186 Difference]: Start difference. First operand has 249 places, 242 transitions, 530 flow. Second operand 7 states and 1538 transitions. [2021-11-20 05:37:02,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 258 transitions, 715 flow [2021-11-20 05:37:02,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 258 transitions, 701 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-20 05:37:02,104 INFO L242 Difference]: Finished difference. Result has 250 places, 243 transitions, 540 flow [2021-11-20 05:37:02,105 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=250, PETRI_TRANSITIONS=243} [2021-11-20 05:37:02,106 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 0 predicate places. [2021-11-20 05:37:02,107 INFO L470 AbstractCegarLoop]: Abstraction has has 250 places, 243 transitions, 540 flow [2021-11-20 05:37:02,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 216.83333333333334) internal successors, (1301), 6 states have internal predecessors, (1301), 0 states have call successors, (0), 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 05:37:02,109 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:37:02,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:02,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:37:02,110 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 05:37:02,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:02,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1303768894, now seen corresponding path program 1 times [2021-11-20 05:37:02,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:37:02,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419286813] [2021-11-20 05:37:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:02,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:37:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:37:02,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:37:02,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419286813] [2021-11-20 05:37:02,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419286813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:37:02,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:37:02,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:37:02,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676554761] [2021-11-20 05:37:02,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:37:02,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:37:02,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:37:02,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:37:02,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:37:02,333 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 279 [2021-11-20 05:37:02,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 243 transitions, 540 flow. Second operand has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 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 05:37:02,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:37:02,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 279 [2021-11-20 05:37:02,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:37:02,638 INFO L129 PetriNetUnfolder]: 160/731 cut-off events. [2021-11-20 05:37:02,638 INFO L130 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2021-11-20 05:37:02,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 731 events. 160/731 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2595 event pairs, 60 based on Foata normal form. 7/667 useless extension candidates. Maximal degree in co-relation 1207. Up to 204 conditions per place. [2021-11-20 05:37:02,647 INFO L132 encePairwiseOnDemand]: 269/279 looper letters, 50 selfloop transitions, 8 changer transitions 22/269 dead transitions. [2021-11-20 05:37:02,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 269 transitions, 776 flow [2021-11-20 05:37:02,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:37:02,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-20 05:37:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1967 transitions. [2021-11-20 05:37:02,654 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7833532457188371 [2021-11-20 05:37:02,654 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1967 transitions. [2021-11-20 05:37:02,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1967 transitions. [2021-11-20 05:37:02,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:37:02,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1967 transitions. [2021-11-20 05:37:02,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 218.55555555555554) internal successors, (1967), 9 states have internal predecessors, (1967), 0 states have call successors, (0), 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 05:37:02,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 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 05:37:02,672 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 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 05:37:02,673 INFO L186 Difference]: Start difference. First operand has 250 places, 243 transitions, 540 flow. Second operand 9 states and 1967 transitions. [2021-11-20 05:37:02,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 269 transitions, 776 flow [2021-11-20 05:37:02,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 269 transitions, 760 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 05:37:02,681 INFO L242 Difference]: Finished difference. Result has 255 places, 244 transitions, 558 flow [2021-11-20 05:37:02,682 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=558, PETRI_PLACES=255, PETRI_TRANSITIONS=244} [2021-11-20 05:37:02,684 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 5 predicate places. [2021-11-20 05:37:02,684 INFO L470 AbstractCegarLoop]: Abstraction has has 255 places, 244 transitions, 558 flow [2021-11-20 05:37:02,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 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 05:37:02,686 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:37:02,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:02,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:37:02,687 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 05:37:02,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:02,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1256406783, now seen corresponding path program 1 times [2021-11-20 05:37:02,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:37:02,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014223770] [2021-11-20 05:37:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:02,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:37:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 05:37:02,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:37:02,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014223770] [2021-11-20 05:37:02,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014223770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:37:02,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:37:02,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:37:02,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388716279] [2021-11-20 05:37:02,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:37:02,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:37:02,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:37:02,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:37:02,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:37:02,893 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 279 [2021-11-20 05:37:02,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 244 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 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 05:37:02,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:37:02,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 279 [2021-11-20 05:37:02,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:37:03,222 INFO L129 PetriNetUnfolder]: 233/1025 cut-off events. [2021-11-20 05:37:03,222 INFO L130 PetriNetUnfolder]: For 206/226 co-relation queries the response was YES. [2021-11-20 05:37:03,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 1025 events. 233/1025 cut-off events. For 206/226 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5157 event pairs, 61 based on Foata normal form. 1/896 useless extension candidates. Maximal degree in co-relation 1644. Up to 202 conditions per place. [2021-11-20 05:37:03,235 INFO L132 encePairwiseOnDemand]: 274/279 looper letters, 55 selfloop transitions, 2 changer transitions 7/260 dead transitions. [2021-11-20 05:37:03,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 260 transitions, 739 flow [2021-11-20 05:37:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:37:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-20 05:37:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1093 transitions. [2021-11-20 05:37:03,240 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7835125448028674 [2021-11-20 05:37:03,240 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1093 transitions. [2021-11-20 05:37:03,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1093 transitions. [2021-11-20 05:37:03,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:37:03,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1093 transitions. [2021-11-20 05:37:03,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.6) internal successors, (1093), 5 states have internal predecessors, (1093), 0 states have call successors, (0), 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 05:37:03,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 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 05:37:03,249 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 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 05:37:03,249 INFO L186 Difference]: Start difference. First operand has 255 places, 244 transitions, 558 flow. Second operand 5 states and 1093 transitions. [2021-11-20 05:37:03,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 260 transitions, 739 flow [2021-11-20 05:37:03,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 260 transitions, 719 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-11-20 05:37:03,260 INFO L242 Difference]: Finished difference. Result has 254 places, 245 transitions, 558 flow [2021-11-20 05:37:03,261 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=254, PETRI_TRANSITIONS=245} [2021-11-20 05:37:03,263 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 4 predicate places. [2021-11-20 05:37:03,264 INFO L470 AbstractCegarLoop]: Abstraction has has 254 places, 245 transitions, 558 flow [2021-11-20 05:37:03,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 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 05:37:03,265 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:37:03,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:03,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:37:03,265 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 05:37:03,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:03,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1596938418, now seen corresponding path program 1 times [2021-11-20 05:37:03,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:37:03,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210661080] [2021-11-20 05:37:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:03,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:37:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 05:37:03,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:37:03,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210661080] [2021-11-20 05:37:03,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210661080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:37:03,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:37:03,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:37:03,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115601822] [2021-11-20 05:37:03,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:37:03,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:37:03,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:37:03,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:37:03,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:37:03,358 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 279 [2021-11-20 05:37:03,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 245 transitions, 558 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 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 05:37:03,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:37:03,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 279 [2021-11-20 05:37:03,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:37:03,686 INFO L129 PetriNetUnfolder]: 346/1360 cut-off events. [2021-11-20 05:37:03,686 INFO L130 PetriNetUnfolder]: For 269/269 co-relation queries the response was YES. [2021-11-20 05:37:03,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2262 conditions, 1360 events. 346/1360 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7502 event pairs, 140 based on Foata normal form. 0/1198 useless extension candidates. Maximal degree in co-relation 2249. Up to 341 conditions per place. [2021-11-20 05:37:03,699 INFO L132 encePairwiseOnDemand]: 276/279 looper letters, 27 selfloop transitions, 2 changer transitions 0/253 dead transitions. [2021-11-20 05:37:03,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 253 transitions, 644 flow [2021-11-20 05:37:03,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:37:03,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 05:37:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 753 transitions. [2021-11-20 05:37:03,703 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.899641577060932 [2021-11-20 05:37:03,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 753 transitions. [2021-11-20 05:37:03,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 753 transitions. [2021-11-20 05:37:03,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:37:03,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 753 transitions. [2021-11-20 05:37:03,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 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 05:37:03,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 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 05:37:03,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 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 05:37:03,709 INFO L186 Difference]: Start difference. First operand has 254 places, 245 transitions, 558 flow. Second operand 3 states and 753 transitions. [2021-11-20 05:37:03,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 253 transitions, 644 flow [2021-11-20 05:37:03,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 253 transitions, 638 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-11-20 05:37:03,725 INFO L242 Difference]: Finished difference. Result has 253 places, 246 transitions, 566 flow [2021-11-20 05:37:03,726 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=253, PETRI_TRANSITIONS=246} [2021-11-20 05:37:03,727 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 3 predicate places. [2021-11-20 05:37:03,728 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 246 transitions, 566 flow [2021-11-20 05:37:03,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 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 05:37:03,728 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:37:03,729 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:03,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:37:03,729 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 05:37:03,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:03,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1371245932, now seen corresponding path program 1 times [2021-11-20 05:37:03,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:37:03,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140471553] [2021-11-20 05:37:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:03,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:37:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 05:37:03,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:37:03,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140471553] [2021-11-20 05:37:03,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140471553] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:37:03,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623035130] [2021-11-20 05:37:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:03,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:37:03,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:37:03,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:37:03,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:37:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:04,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:37:04,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:37:04,587 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 24 treesize of output 8 [2021-11-20 05:37:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 05:37:04,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:37:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 05:37:05,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623035130] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:37:05,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:37:05,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-11-20 05:37:05,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465965894] [2021-11-20 05:37:05,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:37:05,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:37:05,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:37:05,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:37:05,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:37:05,152 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 279 [2021-11-20 05:37:05,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 246 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 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 05:37:05,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:37:05,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 279 [2021-11-20 05:37:05,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:37:06,405 INFO L129 PetriNetUnfolder]: 2082/4853 cut-off events. [2021-11-20 05:37:06,405 INFO L130 PetriNetUnfolder]: For 1669/1669 co-relation queries the response was YES. [2021-11-20 05:37:06,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9813 conditions, 4853 events. 2082/4853 cut-off events. For 1669/1669 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 36426 event pairs, 515 based on Foata normal form. 0/4463 useless extension candidates. Maximal degree in co-relation 9801. Up to 1468 conditions per place. [2021-11-20 05:37:06,464 INFO L132 encePairwiseOnDemand]: 272/279 looper letters, 79 selfloop transitions, 16 changer transitions 0/305 dead transitions. [2021-11-20 05:37:06,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 305 transitions, 942 flow [2021-11-20 05:37:06,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:37:06,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 05:37:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1678 transitions. [2021-11-20 05:37:06,470 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8591909882232462 [2021-11-20 05:37:06,471 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1678 transitions. [2021-11-20 05:37:06,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1678 transitions. [2021-11-20 05:37:06,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:37:06,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1678 transitions. [2021-11-20 05:37:06,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 239.71428571428572) internal successors, (1678), 7 states have internal predecessors, (1678), 0 states have call successors, (0), 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 05:37:06,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 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 05:37:06,483 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 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 05:37:06,484 INFO L186 Difference]: Start difference. First operand has 253 places, 246 transitions, 566 flow. Second operand 7 states and 1678 transitions. [2021-11-20 05:37:06,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 305 transitions, 942 flow [2021-11-20 05:37:06,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 305 transitions, 938 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 05:37:06,494 INFO L242 Difference]: Finished difference. Result has 261 places, 261 transitions, 667 flow [2021-11-20 05:37:06,495 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=667, PETRI_PLACES=261, PETRI_TRANSITIONS=261} [2021-11-20 05:37:06,496 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 11 predicate places. [2021-11-20 05:37:06,496 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 261 transitions, 667 flow [2021-11-20 05:37:06,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 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 05:37:06,497 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:37:06,498 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:06,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 05:37:06,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:37:06,726 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 05:37:06,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash -979168118, now seen corresponding path program 2 times [2021-11-20 05:37:06,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:37:06,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466995653] [2021-11-20 05:37:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:06,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:37:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 05:37:07,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:37:07,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466995653] [2021-11-20 05:37:07,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466995653] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:37:07,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399629819] [2021-11-20 05:37:07,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:37:07,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:37:07,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:37:07,014 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:37:07,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:37:07,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:37:07,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:37:07,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:37:07,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:37:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 05:37:07,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:37:07,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399629819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:37:07,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:37:07,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-11-20 05:37:07,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353918602] [2021-11-20 05:37:07,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:37:07,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:37:07,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:37:07,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:37:07,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:37:07,632 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 279 [2021-11-20 05:37:07,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 261 transitions, 667 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 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 05:37:07,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:37:07,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 279 [2021-11-20 05:37:07,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:37:08,519 INFO L129 PetriNetUnfolder]: 698/2849 cut-off events. [2021-11-20 05:37:08,519 INFO L130 PetriNetUnfolder]: For 1037/1057 co-relation queries the response was YES. [2021-11-20 05:37:08,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5334 conditions, 2849 events. 698/2849 cut-off events. For 1037/1057 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 22511 event pairs, 316 based on Foata normal form. 45/2640 useless extension candidates. Maximal degree in co-relation 5319. Up to 932 conditions per place. [2021-11-20 05:37:08,551 INFO L132 encePairwiseOnDemand]: 275/279 looper letters, 28 selfloop transitions, 2 changer transitions 1/270 dead transitions. [2021-11-20 05:37:08,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 270 transitions, 768 flow [2021-11-20 05:37:08,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:37:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 05:37:08,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 753 transitions. [2021-11-20 05:37:08,557 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.899641577060932 [2021-11-20 05:37:08,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 753 transitions. [2021-11-20 05:37:08,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 753 transitions. [2021-11-20 05:37:08,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:37:08,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 753 transitions. [2021-11-20 05:37:08,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 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 05:37:08,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 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 05:37:08,564 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 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 05:37:08,564 INFO L186 Difference]: Start difference. First operand has 261 places, 261 transitions, 667 flow. Second operand 3 states and 753 transitions. [2021-11-20 05:37:08,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 270 transitions, 768 flow [2021-11-20 05:37:08,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 270 transitions, 768 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-20 05:37:08,575 INFO L242 Difference]: Finished difference. Result has 264 places, 262 transitions, 683 flow [2021-11-20 05:37:08,576 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=683, PETRI_PLACES=264, PETRI_TRANSITIONS=262} [2021-11-20 05:37:08,577 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 14 predicate places. [2021-11-20 05:37:08,577 INFO L470 AbstractCegarLoop]: Abstraction has has 264 places, 262 transitions, 683 flow [2021-11-20 05:37:08,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 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 05:37:08,578 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:37:08,578 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:08,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:37:08,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:37:08,794 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 05:37:08,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:08,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1472672790, now seen corresponding path program 3 times [2021-11-20 05:37:08,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:37:08,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175773801] [2021-11-20 05:37:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:08,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:37:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:08,994 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 05:37:08,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:37:08,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175773801] [2021-11-20 05:37:08,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175773801] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:37:08,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510410849] [2021-11-20 05:37:08,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:37:08,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:37:08,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:37:08,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:37:09,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:37:09,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 05:37:09,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:37:09,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 05:37:09,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:37:10,081 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 23 treesize of output 15 [2021-11-20 05:37:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:37:10,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:37:10,413 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 12 treesize of output 4 [2021-11-20 05:37:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:37:11,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510410849] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:37:11,391 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:37:11,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2021-11-20 05:37:11,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168715666] [2021-11-20 05:37:11,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:37:11,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-20 05:37:11,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:37:11,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-20 05:37:11,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2021-11-20 05:37:11,399 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 279 [2021-11-20 05:37:11,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 262 transitions, 683 flow. Second operand has 29 states, 29 states have (on average 167.3793103448276) internal successors, (4854), 29 states have internal predecessors, (4854), 0 states have call successors, (0), 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 05:37:11,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:37:11,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 279 [2021-11-20 05:37:11,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:37:16,967 INFO L129 PetriNetUnfolder]: 5064/13440 cut-off events. [2021-11-20 05:37:16,968 INFO L130 PetriNetUnfolder]: For 11176/11304 co-relation queries the response was YES. [2021-11-20 05:37:17,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31248 conditions, 13440 events. 5064/13440 cut-off events. For 11176/11304 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 130878 event pairs, 1042 based on Foata normal form. 773/13303 useless extension candidates. Maximal degree in co-relation 31231. Up to 1570 conditions per place. [2021-11-20 05:37:17,095 INFO L132 encePairwiseOnDemand]: 234/279 looper letters, 216 selfloop transitions, 113 changer transitions 113/586 dead transitions. [2021-11-20 05:37:17,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 586 transitions, 2895 flow [2021-11-20 05:37:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-20 05:37:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-11-20 05:37:17,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 10475 transitions. [2021-11-20 05:37:17,135 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5959492518632303 [2021-11-20 05:37:17,135 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 10475 transitions. [2021-11-20 05:37:17,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 10475 transitions. [2021-11-20 05:37:17,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:37:17,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 10475 transitions. [2021-11-20 05:37:17,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 166.26984126984127) internal successors, (10475), 63 states have internal predecessors, (10475), 0 states have call successors, (0), 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 05:37:17,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 279.0) internal successors, (17856), 64 states have internal predecessors, (17856), 0 states have call successors, (0), 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 05:37:17,228 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 279.0) internal successors, (17856), 64 states have internal predecessors, (17856), 0 states have call successors, (0), 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 05:37:17,228 INFO L186 Difference]: Start difference. First operand has 264 places, 262 transitions, 683 flow. Second operand 63 states and 10475 transitions. [2021-11-20 05:37:17,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 586 transitions, 2895 flow [2021-11-20 05:37:17,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 586 transitions, 2891 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-20 05:37:17,269 INFO L242 Difference]: Finished difference. Result has 350 places, 331 transitions, 1388 flow [2021-11-20 05:37:17,270 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=1388, PETRI_PLACES=350, PETRI_TRANSITIONS=331} [2021-11-20 05:37:17,270 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 100 predicate places. [2021-11-20 05:37:17,271 INFO L470 AbstractCegarLoop]: Abstraction has has 350 places, 331 transitions, 1388 flow [2021-11-20 05:37:17,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 167.3793103448276) internal successors, (4854), 29 states have internal predecessors, (4854), 0 states have call successors, (0), 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 05:37:17,273 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:37:17,273 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:17,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:37:17,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 05:37:17,490 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 05:37:17,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:17,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2065999906, now seen corresponding path program 4 times [2021-11-20 05:37:17,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:37:17,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348355157] [2021-11-20 05:37:17,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:17,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:37:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 05:37:17,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:37:17,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348355157] [2021-11-20 05:37:17,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348355157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:37:17,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123050711] [2021-11-20 05:37:17,792 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 05:37:17,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:37:17,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:37:17,794 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:37:17,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:37:17,939 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 05:37:17,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:37:17,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 05:37:17,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:37:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:37:19,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:37:19,227 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 12 treesize of output 4 [2021-11-20 05:37:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:37:20,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123050711] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:37:20,371 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:37:20,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2021-11-20 05:37:20,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21846196] [2021-11-20 05:37:20,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:37:20,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-20 05:37:20,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:37:20,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-20 05:37:20,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2021-11-20 05:37:20,381 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 279 [2021-11-20 05:37:20,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 331 transitions, 1388 flow. Second operand has 30 states, 30 states have (on average 165.26666666666668) internal successors, (4958), 30 states have internal predecessors, (4958), 0 states have call successors, (0), 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 05:37:20,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:37:20,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 279 [2021-11-20 05:37:20,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:37:24,173 INFO L129 PetriNetUnfolder]: 2026/6667 cut-off events. [2021-11-20 05:37:24,173 INFO L130 PetriNetUnfolder]: For 57489/57559 co-relation queries the response was YES. [2021-11-20 05:37:24,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20238 conditions, 6667 events. 2026/6667 cut-off events. For 57489/57559 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 59431 event pairs, 588 based on Foata normal form. 218/6313 useless extension candidates. Maximal degree in co-relation 20196. Up to 1002 conditions per place. [2021-11-20 05:37:24,212 INFO L132 encePairwiseOnDemand]: 234/279 looper letters, 0 selfloop transitions, 0 changer transitions 448/448 dead transitions. [2021-11-20 05:37:24,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 448 transitions, 2560 flow [2021-11-20 05:37:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-20 05:37:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-11-20 05:37:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 9601 transitions. [2021-11-20 05:37:24,232 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5832573962699714 [2021-11-20 05:37:24,232 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 9601 transitions. [2021-11-20 05:37:24,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 9601 transitions. [2021-11-20 05:37:24,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:37:24,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 9601 transitions. [2021-11-20 05:37:24,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 162.72881355932202) internal successors, (9601), 59 states have internal predecessors, (9601), 0 states have call successors, (0), 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 05:37:24,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 279.0) internal successors, (16740), 60 states have internal predecessors, (16740), 0 states have call successors, (0), 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 05:37:24,295 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 279.0) internal successors, (16740), 60 states have internal predecessors, (16740), 0 states have call successors, (0), 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 05:37:24,295 INFO L186 Difference]: Start difference. First operand has 350 places, 331 transitions, 1388 flow. Second operand 59 states and 9601 transitions. [2021-11-20 05:37:24,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 448 transitions, 2560 flow [2021-11-20 05:37:24,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 448 transitions, 2426 flow, removed 41 selfloop flow, removed 22 redundant places. [2021-11-20 05:37:24,348 INFO L242 Difference]: Finished difference. Result has 365 places, 0 transitions, 0 flow [2021-11-20 05:37:24,348 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=0, PETRI_PLACES=365, PETRI_TRANSITIONS=0} [2021-11-20 05:37:24,349 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 115 predicate places. [2021-11-20 05:37:24,349 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 0 transitions, 0 flow [2021-11-20 05:37:24,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 165.26666666666668) internal successors, (4958), 30 states have internal predecessors, (4958), 0 states have call successors, (0), 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 05:37:24,353 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-11-20 05:37:24,354 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-11-20 05:37:24,354 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-11-20 05:37:24,354 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-11-20 05:37:24,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:37:24,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 05:37:24,573 INFO L732 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1] [2021-11-20 05:37:24,579 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-20 05:37:24,579 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:37:24,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:37:24 BasicIcfg [2021-11-20 05:37:24,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:37:24,583 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:37:24,583 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:37:24,583 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:37:24,584 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:36:58" (3/4) ... [2021-11-20 05:37:24,586 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 05:37:24,597 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-20 05:37:24,597 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-20 05:37:24,597 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-11-20 05:37:24,608 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2021-11-20 05:37:24,609 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-20 05:37:24,609 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 05:37:24,610 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 05:37:24,680 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 05:37:24,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:37:24,681 INFO L158 Benchmark]: Toolchain (without parser) took 27076.86ms. Allocated memory was 121.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 84.6MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 372.2MB. Max. memory is 16.1GB. [2021-11-20 05:37:24,681 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory was 94.9MB in the beginning and 94.9MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:37:24,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.75ms. Allocated memory is still 121.6MB. Free memory was 84.3MB in the beginning and 92.5MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:37:24,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.11ms. Allocated memory is still 121.6MB. Free memory was 92.5MB in the beginning and 89.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:37:24,684 INFO L158 Benchmark]: Boogie Preprocessor took 40.39ms. Allocated memory is still 121.6MB. Free memory was 89.7MB in the beginning and 87.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:37:24,685 INFO L158 Benchmark]: RCFGBuilder took 967.43ms. Allocated memory is still 121.6MB. Free memory was 87.6MB in the beginning and 55.5MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-11-20 05:37:24,685 INFO L158 Benchmark]: TraceAbstraction took 25581.02ms. Allocated memory was 121.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 54.8MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 628.7MB. Max. memory is 16.1GB. [2021-11-20 05:37:24,686 INFO L158 Benchmark]: Witness Printer took 97.25ms. Allocated memory is still 1.5GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 05:37:24,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory was 94.9MB in the beginning and 94.9MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.75ms. Allocated memory is still 121.6MB. Free memory was 84.3MB in the beginning and 92.5MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.11ms. Allocated memory is still 121.6MB. Free memory was 92.5MB in the beginning and 89.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.39ms. Allocated memory is still 121.6MB. Free memory was 89.7MB in the beginning and 87.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 967.43ms. Allocated memory is still 121.6MB. Free memory was 87.6MB in the beginning and 55.5MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 25581.02ms. Allocated memory was 121.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 54.8MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 628.7MB. Max. memory is 16.1GB. * Witness Printer took 97.25ms. Allocated memory is still 1.5GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 156]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 301 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.3s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2359 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2359 mSDsluCounter, 2021 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2450 mSDsCounter, 344 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4148 IncrementalHoareTripleChecker+Invalid, 4492 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 344 mSolverCounterUnsat, 278 mSDtfsCounter, 4148 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1914 GetRequests, 1697 SyntacticMatches, 1 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3731 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1388occurred in iteration=10, InterpolantAutomatonStates: 170, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 3421 NumberOfCodeBlocks, 3384 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 4138 ConstructedInterpolants, 0 QuantifiedInterpolants, 12737 SizeOfPredicates, 44 NumberOfNonLiveVariables, 2011 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 141/175 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-20 05:37:24,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507856c2-ce64-47ff-919f-4adf1244ce84/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE