./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be --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 672ab63d50f6d257836fb16bc257f69b3b166ee79333dc7cfe86a969c93c0f7f ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:04:35,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:04:35,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:04:35,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:04:35,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:04:35,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:04:35,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:04:35,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:04:35,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:04:35,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:04:35,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:04:35,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:04:35,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:04:35,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:04:35,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:04:35,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:04:35,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:04:35,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:04:35,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:04:35,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:04:35,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:04:35,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:04:35,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:04:35,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:04:35,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:04:35,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:04:35,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:04:35,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:04:35,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:04:35,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:04:35,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:04:35,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:04:35,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:04:35,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:04:35,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:04:35,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:04:35,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:04:35,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:04:35,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:04:35,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:04:35,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:04:35,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:04:35,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:04:35,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:04:35,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:04:35,266 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:04:35,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:04:35,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:04:35,267 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:04:35,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:04:35,267 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:04:35,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:04:35,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:04:35,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:04:35,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:04:35,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:04:35,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:04:35,269 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:04:35,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:04:35,269 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:04:35,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:04:35,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:04:35,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:04:35,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:04:35,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:04:35,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:04:35,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:04:35,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:04:35,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:04:35,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:04:35,278 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:04:35,278 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:04:35,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:04:35,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:04:35,279 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_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 672ab63d50f6d257836fb16bc257f69b3b166ee79333dc7cfe86a969c93c0f7f [2021-10-21 19:04:35,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:04:35,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:04:35,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:04:35,617 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:04:35,619 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:04:35,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/weaver/chl-sre-trans.wvr.c [2021-10-21 19:04:35,688 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/data/6f20633ae/dfdabce10d5a420ba53a8a82a8899efe/FLAG6d989a217 [2021-10-21 19:04:36,180 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:04:36,181 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/sv-benchmarks/c/weaver/chl-sre-trans.wvr.c [2021-10-21 19:04:36,206 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/data/6f20633ae/dfdabce10d5a420ba53a8a82a8899efe/FLAG6d989a217 [2021-10-21 19:04:36,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/data/6f20633ae/dfdabce10d5a420ba53a8a82a8899efe [2021-10-21 19:04:36,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:04:36,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:04:36,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:04:36,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:04:36,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:04:36,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:04:36" (1/1) ... [2021-10-21 19:04:36,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8cb210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:36, skipping insertion in model container [2021-10-21 19:04:36,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:04:36" (1/1) ... [2021-10-21 19:04:36,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:04:36,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:04:36,806 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/sv-benchmarks/c/weaver/chl-sre-trans.wvr.c[2272,2285] [2021-10-21 19:04:36,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:04:36,819 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:04:36,840 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/sv-benchmarks/c/weaver/chl-sre-trans.wvr.c[2272,2285] [2021-10-21 19:04:36,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:04:36,856 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:04:36,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:36 WrapperNode [2021-10-21 19:04:36,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:04:36,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:04:36,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:04:36,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:04:36,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:36" (1/1) ... [2021-10-21 19:04:36,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:36" (1/1) ... [2021-10-21 19:04:36,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:04:36,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:04:36,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:04:36,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:04:36,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:36" (1/1) ... [2021-10-21 19:04:36,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:36" (1/1) ... [2021-10-21 19:04:36,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:36" (1/1) ... [2021-10-21 19:04:36,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:36" (1/1) ... [2021-10-21 19:04:36,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:36" (1/1) ... [2021-10-21 19:04:36,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:36" (1/1) ... [2021-10-21 19:04:36,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:36" (1/1) ... [2021-10-21 19:04:36,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:04:36,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:04:36,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:04:36,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:04:36,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:36" (1/1) ... [2021-10-21 19:04:36,937 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:04:36,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:04:36,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:04:37,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:04:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-21 19:04:37,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-21 19:04:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-21 19:04:37,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-21 19:04:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-21 19:04:37,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-21 19:04:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:04:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:04:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:04:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:04:37,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:04:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:04:37,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:04:37,046 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 19:04:37,471 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:04:37,471 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-21 19:04:37,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:04:37 BoogieIcfgContainer [2021-10-21 19:04:37,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:04:37,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:04:37,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:04:37,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:04:37,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:04:36" (1/3) ... [2021-10-21 19:04:37,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a4cf3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:04:37, skipping insertion in model container [2021-10-21 19:04:37,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:36" (2/3) ... [2021-10-21 19:04:37,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a4cf3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:04:37, skipping insertion in model container [2021-10-21 19:04:37,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:04:37" (3/3) ... [2021-10-21 19:04:37,480 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-trans.wvr.c [2021-10-21 19:04:37,485 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 19:04:37,485 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:04:37,485 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:04:37,485 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 19:04:37,520 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,531 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,531 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,531 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,532 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,532 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,532 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,532 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,533 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,533 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,533 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,533 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,533 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,535 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,535 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,544 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,544 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,545 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,545 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,547 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:04:37,560 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-21 19:04:37,613 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:04:37,620 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:04:37,621 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 19:04:37,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 110 transitions, 244 flow [2021-10-21 19:04:37,739 INFO L129 PetriNetUnfolder]: 7/107 cut-off events. [2021-10-21 19:04:37,740 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-21 19:04:37,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 107 events. 7/107 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2021-10-21 19:04:37,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 110 transitions, 244 flow [2021-10-21 19:04:37,757 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 97 transitions, 212 flow [2021-10-21 19:04:37,830 INFO L129 PetriNetUnfolder]: 7/96 cut-off events. [2021-10-21 19:04:37,830 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-21 19:04:37,831 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:04:37,831 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] [2021-10-21 19:04:37,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:04:37,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:37,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1401870433, now seen corresponding path program 1 times [2021-10-21 19:04:37,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:37,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324077856] [2021-10-21 19:04:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:37,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:38,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:38,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324077856] [2021-10-21 19:04:38,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324077856] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:38,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:38,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:04:38,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931392584] [2021-10-21 19:04:38,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:04:38,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:38,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:04:38,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:04:38,473 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 110 [2021-10-21 19:04:38,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 98.5) internal successors, (591), 6 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:38,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:04:38,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 110 [2021-10-21 19:04:38,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:04:38,598 INFO L129 PetriNetUnfolder]: 5/110 cut-off events. [2021-10-21 19:04:38,598 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-10-21 19:04:38,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 110 events. 5/110 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 2/104 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2021-10-21 19:04:38,602 INFO L132 encePairwiseOnDemand]: 101/110 looper letters, 8 selfloop transitions, 4 changer transitions 5/102 dead transitions. [2021-10-21 19:04:38,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 102 transitions, 256 flow [2021-10-21 19:04:38,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:04:38,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 19:04:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 699 transitions. [2021-10-21 19:04:38,619 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9077922077922078 [2021-10-21 19:04:38,620 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 699 transitions. [2021-10-21 19:04:38,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 699 transitions. [2021-10-21 19:04:38,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:04:38,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 699 transitions. [2021-10-21 19:04:38,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:38,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:38,647 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:38,650 INFO L186 Difference]: Start difference. First operand has 100 places, 97 transitions, 212 flow. Second operand 7 states and 699 transitions. [2021-10-21 19:04:38,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 102 transitions, 256 flow [2021-10-21 19:04:38,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 102 transitions, 244 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-21 19:04:38,660 INFO L242 Difference]: Finished difference. Result has 104 places, 97 transitions, 224 flow [2021-10-21 19:04:38,662 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=224, PETRI_PLACES=104, PETRI_TRANSITIONS=97} [2021-10-21 19:04:38,663 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 4 predicate places. [2021-10-21 19:04:38,663 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 97 transitions, 224 flow [2021-10-21 19:04:38,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.5) internal successors, (591), 6 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:38,664 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:04:38,665 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] [2021-10-21 19:04:38,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:04:38,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:04:38,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:38,666 INFO L82 PathProgramCache]: Analyzing trace with hash -140578532, now seen corresponding path program 1 times [2021-10-21 19:04:38,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:38,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507775451] [2021-10-21 19:04:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:38,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:38,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:38,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507775451] [2021-10-21 19:04:38,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507775451] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:38,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:38,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:04:38,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368045799] [2021-10-21 19:04:38,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:04:38,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:38,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:04:38,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:04:38,884 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 110 [2021-10-21 19:04:38,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 97 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 98.5) internal successors, (591), 6 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:38,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:04:38,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 110 [2021-10-21 19:04:38,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:04:38,995 INFO L129 PetriNetUnfolder]: 4/126 cut-off events. [2021-10-21 19:04:38,995 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-21 19:04:38,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 126 events. 4/126 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 244 event pairs, 0 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 154. Up to 7 conditions per place. [2021-10-21 19:04:38,998 INFO L132 encePairwiseOnDemand]: 103/110 looper letters, 8 selfloop transitions, 4 changer transitions 3/102 dead transitions. [2021-10-21 19:04:38,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 102 transitions, 268 flow [2021-10-21 19:04:39,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:04:39,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-21 19:04:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 598 transitions. [2021-10-21 19:04:39,014 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.906060606060606 [2021-10-21 19:04:39,014 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 598 transitions. [2021-10-21 19:04:39,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 598 transitions. [2021-10-21 19:04:39,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:04:39,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 598 transitions. [2021-10-21 19:04:39,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.66666666666667) internal successors, (598), 6 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:39,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:39,022 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:39,023 INFO L186 Difference]: Start difference. First operand has 104 places, 97 transitions, 224 flow. Second operand 6 states and 598 transitions. [2021-10-21 19:04:39,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 102 transitions, 268 flow [2021-10-21 19:04:39,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 102 transitions, 260 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-10-21 19:04:39,028 INFO L242 Difference]: Finished difference. Result has 106 places, 99 transitions, 246 flow [2021-10-21 19:04:39,029 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=106, PETRI_TRANSITIONS=99} [2021-10-21 19:04:39,029 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 6 predicate places. [2021-10-21 19:04:39,029 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 99 transitions, 246 flow [2021-10-21 19:04:39,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.5) internal successors, (591), 6 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:39,030 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:04:39,031 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] [2021-10-21 19:04:39,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:04:39,031 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:04:39,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:39,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1380220221, now seen corresponding path program 1 times [2021-10-21 19:04:39,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:39,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871644259] [2021-10-21 19:04:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:39,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:39,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:39,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871644259] [2021-10-21 19:04:39,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871644259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:39,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:39,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:04:39,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345181817] [2021-10-21 19:04:39,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:04:39,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:39,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:04:39,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:04:39,204 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2021-10-21 19:04:39,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 99 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:39,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:04:39,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2021-10-21 19:04:39,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:04:39,352 INFO L129 PetriNetUnfolder]: 3/145 cut-off events. [2021-10-21 19:04:39,353 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-10-21 19:04:39,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 145 events. 3/145 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 371 event pairs, 0 based on Foata normal form. 1/135 useless extension candidates. Maximal degree in co-relation 194. Up to 16 conditions per place. [2021-10-21 19:04:39,355 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 14 selfloop transitions, 5 changer transitions 3/106 dead transitions. [2021-10-21 19:04:39,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 106 transitions, 315 flow [2021-10-21 19:04:39,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:04:39,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 19:04:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 867 transitions. [2021-10-21 19:04:39,367 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8757575757575757 [2021-10-21 19:04:39,367 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 867 transitions. [2021-10-21 19:04:39,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 867 transitions. [2021-10-21 19:04:39,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:04:39,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 867 transitions. [2021-10-21 19:04:39,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.33333333333333) internal successors, (867), 9 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:39,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:39,383 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:39,383 INFO L186 Difference]: Start difference. First operand has 106 places, 99 transitions, 246 flow. Second operand 9 states and 867 transitions. [2021-10-21 19:04:39,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 106 transitions, 315 flow [2021-10-21 19:04:39,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 106 transitions, 306 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-10-21 19:04:39,397 INFO L242 Difference]: Finished difference. Result has 116 places, 103 transitions, 285 flow [2021-10-21 19:04:39,397 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=285, PETRI_PLACES=116, PETRI_TRANSITIONS=103} [2021-10-21 19:04:39,398 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 16 predicate places. [2021-10-21 19:04:39,398 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 103 transitions, 285 flow [2021-10-21 19:04:39,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:39,400 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:04:39,401 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] [2021-10-21 19:04:39,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:04:39,402 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:04:39,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:39,405 INFO L82 PathProgramCache]: Analyzing trace with hash -976512895, now seen corresponding path program 1 times [2021-10-21 19:04:39,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:39,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360892295] [2021-10-21 19:04:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:39,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:39,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:39,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:39,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360892295] [2021-10-21 19:04:39,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360892295] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:39,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:39,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:04:39,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486811720] [2021-10-21 19:04:39,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:04:39,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:39,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:04:39,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:04:39,684 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-10-21 19:04:39,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 103 transitions, 285 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:39,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:04:39,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-10-21 19:04:39,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:04:40,003 INFO L129 PetriNetUnfolder]: 267/1197 cut-off events. [2021-10-21 19:04:40,004 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-10-21 19:04:40,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1806 conditions, 1197 events. 267/1197 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9498 event pairs, 38 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 1783. Up to 162 conditions per place. [2021-10-21 19:04:40,016 INFO L132 encePairwiseOnDemand]: 95/110 looper letters, 18 selfloop transitions, 11 changer transitions 31/134 dead transitions. [2021-10-21 19:04:40,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 134 transitions, 445 flow [2021-10-21 19:04:40,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:04:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-21 19:04:40,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 500 transitions. [2021-10-21 19:04:40,019 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9090909090909091 [2021-10-21 19:04:40,019 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 500 transitions. [2021-10-21 19:04:40,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 500 transitions. [2021-10-21 19:04:40,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:04:40,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 500 transitions. [2021-10-21 19:04:40,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,024 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,024 INFO L186 Difference]: Start difference. First operand has 116 places, 103 transitions, 285 flow. Second operand 5 states and 500 transitions. [2021-10-21 19:04:40,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 134 transitions, 445 flow [2021-10-21 19:04:40,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 134 transitions, 438 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-10-21 19:04:40,033 INFO L242 Difference]: Finished difference. Result has 119 places, 96 transitions, 284 flow [2021-10-21 19:04:40,033 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=119, PETRI_TRANSITIONS=96} [2021-10-21 19:04:40,033 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 19 predicate places. [2021-10-21 19:04:40,034 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 96 transitions, 284 flow [2021-10-21 19:04:40,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,034 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:04:40,034 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] [2021-10-21 19:04:40,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:04:40,035 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:04:40,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:40,035 INFO L82 PathProgramCache]: Analyzing trace with hash -2001907399, now seen corresponding path program 2 times [2021-10-21 19:04:40,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:40,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135987504] [2021-10-21 19:04:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:40,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:40,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:40,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135987504] [2021-10-21 19:04:40,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135987504] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:40,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:40,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:04:40,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138508061] [2021-10-21 19:04:40,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:04:40,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:40,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:04:40,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:04:40,167 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 110 [2021-10-21 19:04:40,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 96 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:04:40,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 110 [2021-10-21 19:04:40,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:04:40,354 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([291] thread3EXIT-->L73-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= v_thread3Thread1of1ForFork1_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem20_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {ULTIMATE.start_main_#t~mem20=|v_ULTIMATE.start_main_#t~mem20_5|, thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{ULTIMATE.start_main_#t~mem20=|v_ULTIMATE.start_main_#t~mem20_5|, thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][107], [Black: 123#(and (= ~result_4~0 0) (= |thread2Thread1of1ForFork0_#t~ite6| 0)), Black: 119#(= ~result_4~0 0), Black: 154#(<= (+ ~result_3~0 1) 0), Black: 162#(and (<= (+ ~result_3~0 1) 0) (<= (+ |thread1Thread1of1ForFork2_#t~ite3| 1) 0)), Black: 160#(and (<= (+ |thread1Thread1of1ForFork2_#t~ite4| 1) 0) (<= (+ ~result_3~0 1) 0) (<= (+ |thread1Thread1of1ForFork2_#t~ite3| 1) 0)), Black: 152#(<= (+ |thread1Thread1of1ForFork2_#t~ite3| 1) 0), Black: 158#(and (<= (+ |thread1Thread1of1ForFork2_#t~ite4| 1) 0) (<= (+ |thread1Thread1of1ForFork2_#t~ite3| 1) 0)), Black: 136#(= ~result_3~0 0), Black: 140#(and (= |thread1Thread1of1ForFork2_#t~ite4| 0) (= ~result_3~0 0)), Black: 177#(or (not (= ~sponsored_1~0 (* 256 (div ~sponsored_1~0 256)))) (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0) (= ~sponsored_0~0 (* 256 (div ~sponsored_0~0 256)))), Black: 179#(not (= ~sponsored_1~0 (* 256 (div ~sponsored_1~0 256)))), Black: 175#true, 31#L73-2true, 188#(not (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0)), 178#(or (not (= ~sponsored_1~0 (* 256 (div ~sponsored_1~0 256)))) (= ~sponsored_0~0 (* 256 (div ~sponsored_0~0 256))))]) [2021-10-21 19:04:40,354 INFO L384 tUnfolder$Statistics]: this new event has 75 ancestors and is not cut-off event [2021-10-21 19:04:40,355 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2021-10-21 19:04:40,355 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2021-10-21 19:04:40,355 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2021-10-21 19:04:40,365 INFO L129 PetriNetUnfolder]: 98/815 cut-off events. [2021-10-21 19:04:40,366 INFO L130 PetriNetUnfolder]: For 253/495 co-relation queries the response was YES. [2021-10-21 19:04:40,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 815 events. 98/815 cut-off events. For 253/495 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6503 event pairs, 8 based on Foata normal form. 23/811 useless extension candidates. Maximal degree in co-relation 1375. Up to 103 conditions per place. [2021-10-21 19:04:40,377 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 28 selfloop transitions, 8 changer transitions 2/114 dead transitions. [2021-10-21 19:04:40,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 114 transitions, 444 flow [2021-10-21 19:04:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:04:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 19:04:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2021-10-21 19:04:40,380 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9045454545454545 [2021-10-21 19:04:40,380 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2021-10-21 19:04:40,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2021-10-21 19:04:40,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:04:40,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2021-10-21 19:04:40,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,384 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,385 INFO L186 Difference]: Start difference. First operand has 119 places, 96 transitions, 284 flow. Second operand 4 states and 398 transitions. [2021-10-21 19:04:40,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 114 transitions, 444 flow [2021-10-21 19:04:40,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 114 transitions, 410 flow, removed 12 selfloop flow, removed 12 redundant places. [2021-10-21 19:04:40,397 INFO L242 Difference]: Finished difference. Result has 104 places, 102 transitions, 332 flow [2021-10-21 19:04:40,397 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2021-10-21 19:04:40,398 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 4 predicate places. [2021-10-21 19:04:40,398 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 332 flow [2021-10-21 19:04:40,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,400 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:04:40,403 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] [2021-10-21 19:04:40,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:04:40,404 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:04:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:40,404 INFO L82 PathProgramCache]: Analyzing trace with hash 89543633, now seen corresponding path program 1 times [2021-10-21 19:04:40,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:40,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955737344] [2021-10-21 19:04:40,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:40,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:40,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:40,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955737344] [2021-10-21 19:04:40,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955737344] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:40,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:40,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:04:40,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866000863] [2021-10-21 19:04:40,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:04:40,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:04:40,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:04:40,546 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2021-10-21 19:04:40,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:04:40,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2021-10-21 19:04:40,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:04:40,730 INFO L129 PetriNetUnfolder]: 53/627 cut-off events. [2021-10-21 19:04:40,730 INFO L130 PetriNetUnfolder]: For 161/169 co-relation queries the response was YES. [2021-10-21 19:04:40,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 627 events. 53/627 cut-off events. For 161/169 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4670 event pairs, 12 based on Foata normal form. 2/600 useless extension candidates. Maximal degree in co-relation 780. Up to 66 conditions per place. [2021-10-21 19:04:40,735 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 11 selfloop transitions, 0 changer transitions 14/109 dead transitions. [2021-10-21 19:04:40,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 109 transitions, 384 flow [2021-10-21 19:04:40,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:04:40,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 19:04:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 866 transitions. [2021-10-21 19:04:40,740 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8747474747474747 [2021-10-21 19:04:40,740 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 866 transitions. [2021-10-21 19:04:40,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 866 transitions. [2021-10-21 19:04:40,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:04:40,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 866 transitions. [2021-10-21 19:04:40,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.22222222222223) internal successors, (866), 9 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,748 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,748 INFO L186 Difference]: Start difference. First operand has 104 places, 102 transitions, 332 flow. Second operand 9 states and 866 transitions. [2021-10-21 19:04:40,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 109 transitions, 384 flow [2021-10-21 19:04:40,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 109 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-21 19:04:40,754 INFO L242 Difference]: Finished difference. Result has 116 places, 95 transitions, 290 flow [2021-10-21 19:04:40,754 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=290, PETRI_PLACES=116, PETRI_TRANSITIONS=95} [2021-10-21 19:04:40,755 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 16 predicate places. [2021-10-21 19:04:40,755 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 95 transitions, 290 flow [2021-10-21 19:04:40,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,756 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:04:40,756 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] [2021-10-21 19:04:40,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:04:40,756 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:04:40,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:40,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1367216337, now seen corresponding path program 3 times [2021-10-21 19:04:40,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:40,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185950096] [2021-10-21 19:04:40,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:40,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:40,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:40,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185950096] [2021-10-21 19:04:40,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185950096] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:40,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:40,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:04:40,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801298088] [2021-10-21 19:04:40,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:04:40,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:40,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:04:40,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:04:40,974 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-10-21 19:04:40,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 95 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:40,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:04:40,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-10-21 19:04:40,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:04:41,142 INFO L129 PetriNetUnfolder]: 39/539 cut-off events. [2021-10-21 19:04:41,142 INFO L130 PetriNetUnfolder]: For 218/322 co-relation queries the response was YES. [2021-10-21 19:04:41,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 539 events. 39/539 cut-off events. For 218/322 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3905 event pairs, 6 based on Foata normal form. 8/541 useless extension candidates. Maximal degree in co-relation 877. Up to 38 conditions per place. [2021-10-21 19:04:41,147 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 23 selfloop transitions, 8 changer transitions 13/117 dead transitions. [2021-10-21 19:04:41,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 117 transitions, 513 flow [2021-10-21 19:04:41,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:04:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 19:04:41,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 662 transitions. [2021-10-21 19:04:41,151 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8597402597402597 [2021-10-21 19:04:41,151 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 662 transitions. [2021-10-21 19:04:41,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 662 transitions. [2021-10-21 19:04:41,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:04:41,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 662 transitions. [2021-10-21 19:04:41,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.57142857142857) internal successors, (662), 7 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:41,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:41,157 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:41,157 INFO L186 Difference]: Start difference. First operand has 116 places, 95 transitions, 290 flow. Second operand 7 states and 662 transitions. [2021-10-21 19:04:41,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 117 transitions, 513 flow [2021-10-21 19:04:41,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 117 transitions, 492 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-10-21 19:04:41,162 INFO L242 Difference]: Finished difference. Result has 108 places, 96 transitions, 319 flow [2021-10-21 19:04:41,163 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=108, PETRI_TRANSITIONS=96} [2021-10-21 19:04:41,163 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, 8 predicate places. [2021-10-21 19:04:41,163 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 96 transitions, 319 flow [2021-10-21 19:04:41,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:41,165 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:04:41,165 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] [2021-10-21 19:04:41,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:04:41,166 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:04:41,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:41,166 INFO L82 PathProgramCache]: Analyzing trace with hash -2081354375, now seen corresponding path program 4 times [2021-10-21 19:04:41,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:41,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018696827] [2021-10-21 19:04:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:41,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:41,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:41,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018696827] [2021-10-21 19:04:41,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018696827] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:41,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:41,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:04:41,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923437401] [2021-10-21 19:04:41,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:04:41,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:41,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:04:41,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:04:41,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-10-21 19:04:41,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 96 transitions, 319 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:41,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:04:41,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-10-21 19:04:41,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:04:41,460 INFO L129 PetriNetUnfolder]: 27/339 cut-off events. [2021-10-21 19:04:41,460 INFO L130 PetriNetUnfolder]: For 361/473 co-relation queries the response was YES. [2021-10-21 19:04:41,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 339 events. 27/339 cut-off events. For 361/473 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2165 event pairs, 0 based on Foata normal form. 27/363 useless extension candidates. Maximal degree in co-relation 646. Up to 40 conditions per place. [2021-10-21 19:04:41,462 INFO L132 encePairwiseOnDemand]: 103/110 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2021-10-21 19:04:41,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 546 flow [2021-10-21 19:04:41,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:04:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-21 19:04:41,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2021-10-21 19:04:41,466 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8712121212121212 [2021-10-21 19:04:41,467 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2021-10-21 19:04:41,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2021-10-21 19:04:41,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:04:41,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2021-10-21 19:04:41,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:41,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:41,474 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:41,474 INFO L186 Difference]: Start difference. First operand has 108 places, 96 transitions, 319 flow. Second operand 6 states and 575 transitions. [2021-10-21 19:04:41,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 546 flow [2021-10-21 19:04:41,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 107 transitions, 501 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-10-21 19:04:41,480 INFO L242 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2021-10-21 19:04:41,481 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2021-10-21 19:04:41,481 INFO L334 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2021-10-21 19:04:41,481 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2021-10-21 19:04:41,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:04:41,484 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:04:41,485 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 19:04:41,485 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 19:04:41,485 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-21 19:04:41,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:04:41,493 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 19:04:41,494 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:04:41,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:04:41 BasicIcfg [2021-10-21 19:04:41,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:04:41,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:04:41,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:04:41,498 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:04:41,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:04:37" (3/4) ... [2021-10-21 19:04:41,502 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:04:41,509 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-21 19:04:41,509 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-21 19:04:41,509 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-21 19:04:41,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-21 19:04:41,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:04:41,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:04:41,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:04:41,583 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:04:41,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:04:41,586 INFO L168 Benchmark]: Toolchain (without parser) took 5052.10 ms. Allocated memory was 104.9 MB in the beginning and 186.6 MB in the end (delta: 81.8 MB). Free memory was 64.4 MB in the beginning and 136.5 MB in the end (delta: -72.1 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:41,586 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory is still 80.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:04:41,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.04 ms. Allocated memory is still 104.9 MB. Free memory was 64.2 MB in the beginning and 78.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:41,587 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.34 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 77.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:41,588 INFO L168 Benchmark]: Boogie Preprocessor took 27.84 ms. Allocated memory is still 104.9 MB. Free memory was 77.2 MB in the beginning and 76.3 MB in the end (delta: 926.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:04:41,588 INFO L168 Benchmark]: RCFGBuilder took 547.80 ms. Allocated memory is still 104.9 MB. Free memory was 76.3 MB in the beginning and 63.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:41,590 INFO L168 Benchmark]: TraceAbstraction took 4022.19 ms. Allocated memory was 104.9 MB in the beginning and 186.6 MB in the end (delta: 81.8 MB). Free memory was 63.0 MB in the beginning and 139.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:41,591 INFO L168 Benchmark]: Witness Printer took 85.95 ms. Allocated memory is still 186.6 MB. Free memory was 139.6 MB in the beginning and 136.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:41,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory is still 80.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.04 ms. Allocated memory is still 104.9 MB. Free memory was 64.2 MB in the beginning and 78.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.34 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 77.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.84 ms. Allocated memory is still 104.9 MB. Free memory was 77.2 MB in the beginning and 76.3 MB in the end (delta: 926.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 547.80 ms. Allocated memory is still 104.9 MB. Free memory was 76.3 MB in the beginning and 63.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4022.19 ms. Allocated memory was 104.9 MB in the beginning and 186.6 MB in the end (delta: 81.8 MB). Free memory was 63.0 MB in the beginning and 139.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Witness Printer took 85.95 ms. Allocated memory is still 186.6 MB. Free memory was 139.6 MB in the beginning and 136.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 76]: 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, 143 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 72.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3881.9ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1712.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 136.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 99 SDtfs, 107 SDslu, 154 SDs, 0 SdLazy, 268 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 284.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 408.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred in iteration=5, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 61.8ms SsaConstructionTime, 601.6ms SatisfiabilityAnalysisTime, 1021.7ms InterpolantComputationTime, 642 NumberOfCodeBlocks, 642 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 634 ConstructedInterpolants, 0 QuantifiedInterpolants, 1753 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 19:04:41,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4f5c7b-b2d5-4554-afea-447db9c28841/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...