./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:47:11,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:47:11,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:47:11,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:47:11,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:47:11,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:47:11,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:47:11,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:47:11,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:47:11,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:47:11,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:47:11,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:47:11,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:47:11,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:47:11,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:47:11,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:47:11,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:47:11,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:47:11,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:47:11,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:47:11,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:47:11,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:47:11,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:47:11,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:47:11,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:47:11,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:47:11,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:47:11,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:47:11,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:47:11,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:47:11,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:47:11,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:47:11,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:47:11,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:47:11,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:47:11,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:47:11,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:47:11,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:47:11,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:47:11,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:47:11,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:47:11,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:47:11,384 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:47:11,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:47:11,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:47:11,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:47:11,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:47:11,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:47:11,388 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:47:11,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:47:11,389 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:47:11,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:47:11,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:47:11,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:47:11,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:47:11,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:47:11,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:47:11,391 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:47:11,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:47:11,392 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:47:11,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:47:11,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:47:11,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:47:11,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:47:11,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:47:11,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:47:11,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:47:11,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:47:11,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:47:11,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:47:11,394 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:47:11,396 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:47:11,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:47:11,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:47:11,396 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_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d [2021-11-09 10:47:11,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:47:11,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:47:11,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:47:11,726 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:47:11,727 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:47:11,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2021-11-09 10:47:11,806 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/data/034dcb69a/64e51b763c9a4a99b18d312adf931f78/FLAGefe4818ef [2021-11-09 10:47:12,205 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:47:12,206 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2021-11-09 10:47:12,216 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/data/034dcb69a/64e51b763c9a4a99b18d312adf931f78/FLAGefe4818ef [2021-11-09 10:47:12,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/data/034dcb69a/64e51b763c9a4a99b18d312adf931f78 [2021-11-09 10:47:12,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:47:12,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:47:12,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:47:12,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:47:12,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:47:12,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:47:12" (1/1) ... [2021-11-09 10:47:12,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8d28d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:12, skipping insertion in model container [2021-11-09 10:47:12,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:47:12" (1/1) ... [2021-11-09 10:47:12,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:47:12,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:47:12,894 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_ecf78ffc-362a-4370-a460-dc579f6dc009/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2021-11-09 10:47:12,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:47:12,910 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:47:12,960 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_ecf78ffc-362a-4370-a460-dc579f6dc009/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2021-11-09 10:47:12,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:47:12,983 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:47:12,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:12 WrapperNode [2021-11-09 10:47:12,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:47:12,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:47:12,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:47:12,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:47:12,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:12" (1/1) ... [2021-11-09 10:47:13,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:12" (1/1) ... [2021-11-09 10:47:13,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:47:13,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:47:13,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:47:13,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:47:13,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:12" (1/1) ... [2021-11-09 10:47:13,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:12" (1/1) ... [2021-11-09 10:47:13,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:12" (1/1) ... [2021-11-09 10:47:13,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:12" (1/1) ... [2021-11-09 10:47:13,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:12" (1/1) ... [2021-11-09 10:47:13,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:12" (1/1) ... [2021-11-09 10:47:13,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:12" (1/1) ... [2021-11-09 10:47:13,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:47:13,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:47:13,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:47:13,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:47:13,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:12" (1/1) ... [2021-11-09 10:47:13,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:47:13,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:47:13,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:47:13,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:47:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-09 10:47:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-09 10:47:13,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-09 10:47:13,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-09 10:47:13,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-09 10:47:13,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-09 10:47:13,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:47:13,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:47:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 10:47:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-09 10:47:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-09 10:47:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 10:47:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:47:13,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:47:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 10:47:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:47:13,168 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-09 10:47:14,240 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:47:14,240 INFO L299 CfgBuilder]: Removed 46 assume(true) statements. [2021-11-09 10:47:14,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:47:14 BoogieIcfgContainer [2021-11-09 10:47:14,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:47:14,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:47:14,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:47:14,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:47:14,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:47:12" (1/3) ... [2021-11-09 10:47:14,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c365384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:47:14, skipping insertion in model container [2021-11-09 10:47:14,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:12" (2/3) ... [2021-11-09 10:47:14,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c365384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:47:14, skipping insertion in model container [2021-11-09 10:47:14,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:47:14" (3/3) ... [2021-11-09 10:47:14,259 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2021-11-09 10:47:14,265 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-09 10:47:14,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:47:14,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:47:14,266 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-09 10:47:14,307 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,307 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,308 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,308 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,308 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,308 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,309 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,309 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,309 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,311 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,311 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,311 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,311 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,314 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,314 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,314 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,314 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,315 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,315 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,315 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,316 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,316 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,316 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,316 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,317 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,319 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,319 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,319 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,319 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,320 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,320 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,321 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,321 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,321 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,322 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,322 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,322 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,322 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,323 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,323 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,323 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,323 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,323 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,325 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,325 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,325 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,325 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,326 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,326 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,326 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,326 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,326 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,327 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,327 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,327 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,327 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,327 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,328 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,328 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,329 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,329 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,329 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,329 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,329 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,330 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,330 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,330 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,331 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,331 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,331 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,331 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,332 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,333 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,333 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,333 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,333 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,333 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,334 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,334 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,334 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,334 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,335 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,335 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,335 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,335 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,336 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,336 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,336 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,336 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,336 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,337 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,337 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,337 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,337 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,337 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,338 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,338 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,338 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,338 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,338 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,339 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,339 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,339 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,339 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,339 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,339 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,340 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,340 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,340 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,341 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,341 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,341 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,341 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,342 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,342 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,342 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,342 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,343 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,343 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,343 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,343 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,343 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,344 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,347 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,348 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,348 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,348 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,348 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,349 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,349 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,349 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,351 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,351 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,351 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,352 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,352 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,352 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,352 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,352 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,353 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,353 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,353 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,355 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,355 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,357 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,357 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 10:47:14,364 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-09 10:47:14,415 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:47:14,422 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 10:47:14,422 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-09 10:47:14,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 236 places, 251 transitions, 526 flow [2021-11-09 10:47:14,639 INFO L129 PetriNetUnfolder]: 25/248 cut-off events. [2021-11-09 10:47:14,639 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-09 10:47:14,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 248 events. 25/248 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 193 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 211. Up to 4 conditions per place. [2021-11-09 10:47:14,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 251 transitions, 526 flow [2021-11-09 10:47:14,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 238 transitions, 494 flow [2021-11-09 10:47:14,719 INFO L129 PetriNetUnfolder]: 25/237 cut-off events. [2021-11-09 10:47:14,719 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-09 10:47:14,719 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:47:14,720 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:14,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 10:47:14,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:14,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1481274750, now seen corresponding path program 1 times [2021-11-09 10:47:14,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:14,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132130002] [2021-11-09 10:47:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:14,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:15,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:15,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132130002] [2021-11-09 10:47:15,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132130002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:47:15,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:47:15,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:47:15,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609587128] [2021-11-09 10:47:15,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:47:15,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:47:15,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:47:15,183 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 251 [2021-11-09 10:47:15,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 238 transitions, 494 flow. Second operand has 2 states, 2 states have (on average 234.0) internal successors, (468), 2 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:15,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:47:15,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 251 [2021-11-09 10:47:15,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:47:15,260 INFO L129 PetriNetUnfolder]: 8/221 cut-off events. [2021-11-09 10:47:15,260 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-09 10:47:15,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 221 events. 8/221 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 160 event pairs, 0 based on Foata normal form. 15/219 useless extension candidates. Maximal degree in co-relation 230. Up to 4 conditions per place. [2021-11-09 10:47:15,265 INFO L132 encePairwiseOnDemand]: 234/251 looper letters, 0 selfloop transitions, 0 changer transitions 8/221 dead transitions. [2021-11-09 10:47:15,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 221 transitions, 460 flow [2021-11-09 10:47:15,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:47:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-09 10:47:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 483 transitions. [2021-11-09 10:47:15,288 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9621513944223108 [2021-11-09 10:47:15,288 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 483 transitions. [2021-11-09 10:47:15,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 483 transitions. [2021-11-09 10:47:15,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:47:15,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 483 transitions. [2021-11-09 10:47:15,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 241.5) internal successors, (483), 2 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:15,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:15,314 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:15,316 INFO L186 Difference]: Start difference. First operand has 223 places, 238 transitions, 494 flow. Second operand 2 states and 483 transitions. [2021-11-09 10:47:15,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 221 transitions, 460 flow [2021-11-09 10:47:15,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 221 transitions, 448 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-09 10:47:15,331 INFO L242 Difference]: Finished difference. Result has 218 places, 213 transitions, 432 flow [2021-11-09 10:47:15,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=432, PETRI_PLACES=218, PETRI_TRANSITIONS=213} [2021-11-09 10:47:15,335 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -5 predicate places. [2021-11-09 10:47:15,335 INFO L470 AbstractCegarLoop]: Abstraction has has 218 places, 213 transitions, 432 flow [2021-11-09 10:47:15,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 234.0) internal successors, (468), 2 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:15,336 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:47:15,337 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:15,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:47:15,338 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 10:47:15,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:15,341 INFO L85 PathProgramCache]: Analyzing trace with hash 426130534, now seen corresponding path program 1 times [2021-11-09 10:47:15,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:15,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108038228] [2021-11-09 10:47:15,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:15,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:15,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:15,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108038228] [2021-11-09 10:47:15,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108038228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:47:15,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:47:15,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 10:47:15,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740363828] [2021-11-09 10:47:15,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:47:15,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:15,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:47:15,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:47:15,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 251 [2021-11-09 10:47:15,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 213 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 197.66666666666666) internal successors, (1186), 6 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:15,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:47:15,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 251 [2021-11-09 10:47:15,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:47:15,898 INFO L129 PetriNetUnfolder]: 14/333 cut-off events. [2021-11-09 10:47:15,899 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-09 10:47:15,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 333 events. 14/333 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 575 event pairs, 1 based on Foata normal form. 2/318 useless extension candidates. Maximal degree in co-relation 399. Up to 30 conditions per place. [2021-11-09 10:47:15,913 INFO L132 encePairwiseOnDemand]: 240/251 looper letters, 36 selfloop transitions, 8 changer transitions 13/230 dead transitions. [2021-11-09 10:47:15,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 230 transitions, 580 flow [2021-11-09 10:47:15,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:47:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-09 10:47:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1796 transitions. [2021-11-09 10:47:15,922 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7950420540061974 [2021-11-09 10:47:15,922 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1796 transitions. [2021-11-09 10:47:15,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1796 transitions. [2021-11-09 10:47:15,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:47:15,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1796 transitions. [2021-11-09 10:47:15,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 199.55555555555554) internal successors, (1796), 9 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:15,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 251.0) internal successors, (2510), 10 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:15,943 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 251.0) internal successors, (2510), 10 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:15,943 INFO L186 Difference]: Start difference. First operand has 218 places, 213 transitions, 432 flow. Second operand 9 states and 1796 transitions. [2021-11-09 10:47:15,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 230 transitions, 580 flow [2021-11-09 10:47:15,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 230 transitions, 580 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-09 10:47:15,958 INFO L242 Difference]: Finished difference. Result has 220 places, 214 transitions, 462 flow [2021-11-09 10:47:15,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=462, PETRI_PLACES=220, PETRI_TRANSITIONS=214} [2021-11-09 10:47:15,959 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -3 predicate places. [2021-11-09 10:47:15,960 INFO L470 AbstractCegarLoop]: Abstraction has has 220 places, 214 transitions, 462 flow [2021-11-09 10:47:15,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 197.66666666666666) internal successors, (1186), 6 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:15,961 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:47:15,961 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:15,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:47:15,962 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 10:47:15,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:15,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1203832168, now seen corresponding path program 1 times [2021-11-09 10:47:15,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:15,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475391756] [2021-11-09 10:47:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:15,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 10:47:16,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:16,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475391756] [2021-11-09 10:47:16,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475391756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:47:16,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:47:16,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:47:16,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789137151] [2021-11-09 10:47:16,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:47:16,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:16,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:47:16,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:47:16,250 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 251 [2021-11-09 10:47:16,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 214 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:16,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:47:16,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 251 [2021-11-09 10:47:16,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:47:16,299 INFO L129 PetriNetUnfolder]: 9/225 cut-off events. [2021-11-09 10:47:16,299 INFO L130 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2021-11-09 10:47:16,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 225 events. 9/225 cut-off events. For 11/13 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 174 event pairs, 0 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 257. Up to 10 conditions per place. [2021-11-09 10:47:16,302 INFO L132 encePairwiseOnDemand]: 246/251 looper letters, 6 selfloop transitions, 4 changer transitions 0/215 dead transitions. [2021-11-09 10:47:16,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 215 transitions, 486 flow [2021-11-09 10:47:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:47:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-09 10:47:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2021-11-09 10:47:16,305 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9070385126162018 [2021-11-09 10:47:16,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2021-11-09 10:47:16,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2021-11-09 10:47:16,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:47:16,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2021-11-09 10:47:16,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:16,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:16,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:16,314 INFO L186 Difference]: Start difference. First operand has 220 places, 214 transitions, 462 flow. Second operand 3 states and 683 transitions. [2021-11-09 10:47:16,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 215 transitions, 486 flow [2021-11-09 10:47:16,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 215 transitions, 472 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-09 10:47:16,322 INFO L242 Difference]: Finished difference. Result has 216 places, 215 transitions, 468 flow [2021-11-09 10:47:16,322 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=216, PETRI_TRANSITIONS=215} [2021-11-09 10:47:16,323 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -7 predicate places. [2021-11-09 10:47:16,323 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 215 transitions, 468 flow [2021-11-09 10:47:16,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:16,324 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:47:16,324 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:16,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:47:16,324 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 10:47:16,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash 67676196, now seen corresponding path program 2 times [2021-11-09 10:47:16,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:16,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130298619] [2021-11-09 10:47:16,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:16,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 10:47:16,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:16,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130298619] [2021-11-09 10:47:16,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130298619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:47:16,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:47:16,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:47:16,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186301785] [2021-11-09 10:47:16,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:47:16,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:16,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:47:16,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:47:16,470 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 251 [2021-11-09 10:47:16,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 215 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:16,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:47:16,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 251 [2021-11-09 10:47:16,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:47:16,547 INFO L129 PetriNetUnfolder]: 29/311 cut-off events. [2021-11-09 10:47:16,547 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-11-09 10:47:16,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 311 events. 29/311 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 563 event pairs, 4 based on Foata normal form. 2/295 useless extension candidates. Maximal degree in co-relation 398. Up to 27 conditions per place. [2021-11-09 10:47:16,550 INFO L132 encePairwiseOnDemand]: 245/251 looper letters, 11 selfloop transitions, 5 changer transitions 0/219 dead transitions. [2021-11-09 10:47:16,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 219 transitions, 508 flow [2021-11-09 10:47:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:47:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-09 10:47:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 680 transitions. [2021-11-09 10:47:16,553 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9030544488711819 [2021-11-09 10:47:16,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 680 transitions. [2021-11-09 10:47:16,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 680 transitions. [2021-11-09 10:47:16,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:47:16,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 680 transitions. [2021-11-09 10:47:16,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:16,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:16,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:16,560 INFO L186 Difference]: Start difference. First operand has 216 places, 215 transitions, 468 flow. Second operand 3 states and 680 transitions. [2021-11-09 10:47:16,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 219 transitions, 508 flow [2021-11-09 10:47:16,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 219 transitions, 500 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-11-09 10:47:16,567 INFO L242 Difference]: Finished difference. Result has 218 places, 217 transitions, 485 flow [2021-11-09 10:47:16,567 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=485, PETRI_PLACES=218, PETRI_TRANSITIONS=217} [2021-11-09 10:47:16,567 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -5 predicate places. [2021-11-09 10:47:16,568 INFO L470 AbstractCegarLoop]: Abstraction has has 218 places, 217 transitions, 485 flow [2021-11-09 10:47:16,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:16,568 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:47:16,569 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:16,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 10:47:16,569 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 10:47:16,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:16,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1183817312, now seen corresponding path program 3 times [2021-11-09 10:47:16,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:16,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17549862] [2021-11-09 10:47:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:16,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 10:47:16,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:16,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17549862] [2021-11-09 10:47:16,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17549862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:47:16,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:47:16,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 10:47:16,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572995651] [2021-11-09 10:47:16,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:47:16,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:16,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:47:16,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:47:16,779 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 251 [2021-11-09 10:47:16,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 217 transitions, 485 flow. Second operand has 7 states, 7 states have (on average 191.14285714285714) internal successors, (1338), 7 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:16,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:47:16,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 251 [2021-11-09 10:47:16,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:47:16,989 INFO L129 PetriNetUnfolder]: 36/462 cut-off events. [2021-11-09 10:47:16,989 INFO L130 PetriNetUnfolder]: For 33/35 co-relation queries the response was YES. [2021-11-09 10:47:16,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 462 events. 36/462 cut-off events. For 33/35 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1070 event pairs, 4 based on Foata normal form. 6/440 useless extension candidates. Maximal degree in co-relation 642. Up to 53 conditions per place. [2021-11-09 10:47:16,993 INFO L132 encePairwiseOnDemand]: 237/251 looper letters, 44 selfloop transitions, 12 changer transitions 32/255 dead transitions. [2021-11-09 10:47:16,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 255 transitions, 753 flow [2021-11-09 10:47:16,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 10:47:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-09 10:47:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1947 transitions. [2021-11-09 10:47:17,001 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7756972111553785 [2021-11-09 10:47:17,001 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1947 transitions. [2021-11-09 10:47:17,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1947 transitions. [2021-11-09 10:47:17,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:47:17,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1947 transitions. [2021-11-09 10:47:17,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 194.7) internal successors, (1947), 10 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 251.0) internal successors, (2761), 11 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,017 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 251.0) internal successors, (2761), 11 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,017 INFO L186 Difference]: Start difference. First operand has 218 places, 217 transitions, 485 flow. Second operand 10 states and 1947 transitions. [2021-11-09 10:47:17,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 255 transitions, 753 flow [2021-11-09 10:47:17,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 255 transitions, 742 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-11-09 10:47:17,025 INFO L242 Difference]: Finished difference. Result has 227 places, 218 transitions, 514 flow [2021-11-09 10:47:17,026 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=514, PETRI_PLACES=227, PETRI_TRANSITIONS=218} [2021-11-09 10:47:17,026 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, 4 predicate places. [2021-11-09 10:47:17,026 INFO L470 AbstractCegarLoop]: Abstraction has has 227 places, 218 transitions, 514 flow [2021-11-09 10:47:17,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 191.14285714285714) internal successors, (1338), 7 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,034 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:47:17,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:17,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 10:47:17,035 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 10:47:17,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:17,035 INFO L85 PathProgramCache]: Analyzing trace with hash 632484508, now seen corresponding path program 1 times [2021-11-09 10:47:17,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:17,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122250242] [2021-11-09 10:47:17,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:17,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 10:47:17,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:17,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122250242] [2021-11-09 10:47:17,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122250242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:47:17,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:47:17,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:47:17,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141041966] [2021-11-09 10:47:17,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:47:17,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:17,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:47:17,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:47:17,172 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 251 [2021-11-09 10:47:17,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 218 transitions, 514 flow. Second operand has 5 states, 5 states have (on average 196.8) internal successors, (984), 5 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:47:17,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 251 [2021-11-09 10:47:17,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:47:17,293 INFO L129 PetriNetUnfolder]: 39/385 cut-off events. [2021-11-09 10:47:17,293 INFO L130 PetriNetUnfolder]: For 21/23 co-relation queries the response was YES. [2021-11-09 10:47:17,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 385 events. 39/385 cut-off events. For 21/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 882 event pairs, 3 based on Foata normal form. 1/351 useless extension candidates. Maximal degree in co-relation 521. Up to 30 conditions per place. [2021-11-09 10:47:17,298 INFO L132 encePairwiseOnDemand]: 246/251 looper letters, 34 selfloop transitions, 2 changer transitions 3/222 dead transitions. [2021-11-09 10:47:17,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 222 transitions, 600 flow [2021-11-09 10:47:17,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:47:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 10:47:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 990 transitions. [2021-11-09 10:47:17,302 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7888446215139442 [2021-11-09 10:47:17,302 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 990 transitions. [2021-11-09 10:47:17,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 990 transitions. [2021-11-09 10:47:17,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:47:17,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 990 transitions. [2021-11-09 10:47:17,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.0) internal successors, (990), 5 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,310 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,311 INFO L186 Difference]: Start difference. First operand has 227 places, 218 transitions, 514 flow. Second operand 5 states and 990 transitions. [2021-11-09 10:47:17,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 222 transitions, 600 flow [2021-11-09 10:47:17,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 222 transitions, 572 flow, removed 2 selfloop flow, removed 7 redundant places. [2021-11-09 10:47:17,318 INFO L242 Difference]: Finished difference. Result has 225 places, 219 transitions, 502 flow [2021-11-09 10:47:17,319 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=502, PETRI_PLACES=225, PETRI_TRANSITIONS=219} [2021-11-09 10:47:17,319 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, 2 predicate places. [2021-11-09 10:47:17,319 INFO L470 AbstractCegarLoop]: Abstraction has has 225 places, 219 transitions, 502 flow [2021-11-09 10:47:17,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.8) internal successors, (984), 5 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,320 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:47:17,320 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:17,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 10:47:17,321 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 10:47:17,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash 325365998, now seen corresponding path program 1 times [2021-11-09 10:47:17,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:17,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315560270] [2021-11-09 10:47:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:17,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 10:47:17,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:17,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315560270] [2021-11-09 10:47:17,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315560270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:47:17,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:47:17,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:47:17,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477500320] [2021-11-09 10:47:17,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:47:17,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:17,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:47:17,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:47:17,386 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 251 [2021-11-09 10:47:17,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 219 transitions, 502 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:47:17,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 251 [2021-11-09 10:47:17,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:47:17,467 INFO L129 PetriNetUnfolder]: 33/364 cut-off events. [2021-11-09 10:47:17,467 INFO L130 PetriNetUnfolder]: For 9/14 co-relation queries the response was YES. [2021-11-09 10:47:17,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 364 events. 33/364 cut-off events. For 9/14 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 783 event pairs, 3 based on Foata normal form. 2/340 useless extension candidates. Maximal degree in co-relation 457. Up to 25 conditions per place. [2021-11-09 10:47:17,472 INFO L132 encePairwiseOnDemand]: 248/251 looper letters, 7 selfloop transitions, 3 changer transitions 1/220 dead transitions. [2021-11-09 10:47:17,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 220 transitions, 524 flow [2021-11-09 10:47:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:47:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-09 10:47:17,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2021-11-09 10:47:17,475 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9096945551128818 [2021-11-09 10:47:17,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2021-11-09 10:47:17,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2021-11-09 10:47:17,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:47:17,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2021-11-09 10:47:17,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,481 INFO L186 Difference]: Start difference. First operand has 225 places, 219 transitions, 502 flow. Second operand 3 states and 685 transitions. [2021-11-09 10:47:17,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 220 transitions, 524 flow [2021-11-09 10:47:17,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 220 transitions, 518 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-11-09 10:47:17,487 INFO L242 Difference]: Finished difference. Result has 224 places, 219 transitions, 510 flow [2021-11-09 10:47:17,488 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=510, PETRI_PLACES=224, PETRI_TRANSITIONS=219} [2021-11-09 10:47:17,488 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, 1 predicate places. [2021-11-09 10:47:17,488 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 219 transitions, 510 flow [2021-11-09 10:47:17,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:17,489 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:47:17,489 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:17,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 10:47:17,490 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 10:47:17,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:17,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2070121317, now seen corresponding path program 1 times [2021-11-09 10:47:17,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:17,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159291751] [2021-11-09 10:47:17,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:17,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 10:47:17,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:17,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159291751] [2021-11-09 10:47:17,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159291751] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:17,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140239477] [2021-11-09 10:47:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:17,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:17,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:47:17,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:47:17,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 10:47:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:17,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:47:17,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:47:18,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2021-11-09 10:47:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 10:47:18,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140239477] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:18,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:47:18,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-11-09 10:47:18,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711522813] [2021-11-09 10:47:18,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:47:18,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:18,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:47:18,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:47:18,489 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 251 [2021-11-09 10:47:18,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 219 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:18,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:47:18,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 251 [2021-11-09 10:47:18,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:47:19,585 INFO L129 PetriNetUnfolder]: 1673/4260 cut-off events. [2021-11-09 10:47:19,586 INFO L130 PetriNetUnfolder]: For 1111/1136 co-relation queries the response was YES. [2021-11-09 10:47:19,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8027 conditions, 4260 events. 1673/4260 cut-off events. For 1111/1136 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 32727 event pairs, 382 based on Foata normal form. 0/3871 useless extension candidates. Maximal degree in co-relation 8017. Up to 1196 conditions per place. [2021-11-09 10:47:19,634 INFO L132 encePairwiseOnDemand]: 244/251 looper letters, 54 selfloop transitions, 13 changer transitions 6/260 dead transitions. [2021-11-09 10:47:19,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 260 transitions, 774 flow [2021-11-09 10:47:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:47:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-09 10:47:19,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1291 transitions. [2021-11-09 10:47:19,639 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8572377158034529 [2021-11-09 10:47:19,640 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1291 transitions. [2021-11-09 10:47:19,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1291 transitions. [2021-11-09 10:47:19,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:47:19,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1291 transitions. [2021-11-09 10:47:19,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:19,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:19,650 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:19,651 INFO L186 Difference]: Start difference. First operand has 224 places, 219 transitions, 510 flow. Second operand 6 states and 1291 transitions. [2021-11-09 10:47:19,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 260 transitions, 774 flow [2021-11-09 10:47:19,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 260 transitions, 768 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-09 10:47:19,661 INFO L242 Difference]: Finished difference. Result has 231 places, 231 transitions, 592 flow [2021-11-09 10:47:19,662 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=592, PETRI_PLACES=231, PETRI_TRANSITIONS=231} [2021-11-09 10:47:19,662 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, 8 predicate places. [2021-11-09 10:47:19,663 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 231 transitions, 592 flow [2021-11-09 10:47:19,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:19,664 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:47:19,664 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:19,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:47:19,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:19,893 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 10:47:19,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:19,893 INFO L85 PathProgramCache]: Analyzing trace with hash -313814317, now seen corresponding path program 2 times [2021-11-09 10:47:19,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:19,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976228633] [2021-11-09 10:47:19,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:19,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 10:47:20,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:20,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976228633] [2021-11-09 10:47:20,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976228633] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:20,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503601508] [2021-11-09 10:47:20,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:47:20,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:20,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:47:20,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:47:20,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 10:47:20,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 10:47:20,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:47:20,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:47:20,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:47:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-09 10:47:21,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503601508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:47:21,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:47:21,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2021-11-09 10:47:21,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424373994] [2021-11-09 10:47:21,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:47:21,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:21,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:47:21,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-09 10:47:21,118 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 251 [2021-11-09 10:47:21,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 231 transitions, 592 flow. Second operand has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:21,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:47:21,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 251 [2021-11-09 10:47:21,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:47:21,533 INFO L129 PetriNetUnfolder]: 178/1436 cut-off events. [2021-11-09 10:47:21,533 INFO L130 PetriNetUnfolder]: For 205/219 co-relation queries the response was YES. [2021-11-09 10:47:21,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2238 conditions, 1436 events. 178/1436 cut-off events. For 205/219 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 9703 event pairs, 20 based on Foata normal form. 14/1339 useless extension candidates. Maximal degree in co-relation 2225. Up to 79 conditions per place. [2021-11-09 10:47:21,549 INFO L132 encePairwiseOnDemand]: 242/251 looper letters, 41 selfloop transitions, 6 changer transitions 1/236 dead transitions. [2021-11-09 10:47:21,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 236 transitions, 698 flow [2021-11-09 10:47:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:47:21,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-09 10:47:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1398 transitions. [2021-11-09 10:47:21,555 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7956744450768355 [2021-11-09 10:47:21,556 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1398 transitions. [2021-11-09 10:47:21,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1398 transitions. [2021-11-09 10:47:21,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:47:21,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1398 transitions. [2021-11-09 10:47:21,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.71428571428572) internal successors, (1398), 7 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:21,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:21,570 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:21,570 INFO L186 Difference]: Start difference. First operand has 231 places, 231 transitions, 592 flow. Second operand 7 states and 1398 transitions. [2021-11-09 10:47:21,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 236 transitions, 698 flow [2021-11-09 10:47:21,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 236 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-09 10:47:21,580 INFO L242 Difference]: Finished difference. Result has 239 places, 232 transitions, 616 flow [2021-11-09 10:47:21,581 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=616, PETRI_PLACES=239, PETRI_TRANSITIONS=232} [2021-11-09 10:47:21,581 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, 16 predicate places. [2021-11-09 10:47:21,581 INFO L470 AbstractCegarLoop]: Abstraction has has 239 places, 232 transitions, 616 flow [2021-11-09 10:47:21,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:21,582 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:47:21,583 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:21,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:47:21,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:21,804 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 10:47:21,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:21,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1428400074, now seen corresponding path program 1 times [2021-11-09 10:47:21,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:21,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050932114] [2021-11-09 10:47:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:21,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:22,050 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:47:22,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:22,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050932114] [2021-11-09 10:47:22,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050932114] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:22,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235373528] [2021-11-09 10:47:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:22,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:22,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:47:22,060 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:47:22,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 10:47:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:22,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-09 10:47:22,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:47:23,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-11-09 10:47:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:47:23,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235373528] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:23,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:47:23,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-11-09 10:47:23,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733132202] [2021-11-09 10:47:23,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 10:47:23,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:23,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 10:47:23,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-11-09 10:47:23,379 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 251 [2021-11-09 10:47:23,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 232 transitions, 616 flow. Second operand has 20 states, 20 states have (on average 145.4) internal successors, (2908), 20 states have internal predecessors, (2908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:23,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:47:23,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 251 [2021-11-09 10:47:23,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:47:28,110 INFO L129 PetriNetUnfolder]: 5862/14325 cut-off events. [2021-11-09 10:47:28,110 INFO L130 PetriNetUnfolder]: For 8461/8615 co-relation queries the response was YES. [2021-11-09 10:47:28,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32208 conditions, 14325 events. 5862/14325 cut-off events. For 8461/8615 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 138679 event pairs, 1218 based on Foata normal form. 150/13493 useless extension candidates. Maximal degree in co-relation 32192. Up to 2210 conditions per place. [2021-11-09 10:47:28,250 INFO L132 encePairwiseOnDemand]: 211/251 looper letters, 184 selfloop transitions, 92 changer transitions 61/459 dead transitions. [2021-11-09 10:47:28,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 459 transitions, 2169 flow [2021-11-09 10:47:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-09 10:47:28,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-11-09 10:47:28,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 7423 transitions. [2021-11-09 10:47:28,280 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5687250996015937 [2021-11-09 10:47:28,280 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 7423 transitions. [2021-11-09 10:47:28,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 7423 transitions. [2021-11-09 10:47:28,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:47:28,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 7423 transitions. [2021-11-09 10:47:28,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 142.75) internal successors, (7423), 52 states have internal predecessors, (7423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:28,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 251.0) internal successors, (13303), 53 states have internal predecessors, (13303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:28,365 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 251.0) internal successors, (13303), 53 states have internal predecessors, (13303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:28,365 INFO L186 Difference]: Start difference. First operand has 239 places, 232 transitions, 616 flow. Second operand 52 states and 7423 transitions. [2021-11-09 10:47:28,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 459 transitions, 2169 flow [2021-11-09 10:47:28,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 459 transitions, 2153 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-09 10:47:28,396 INFO L242 Difference]: Finished difference. Result has 298 places, 283 transitions, 1096 flow [2021-11-09 10:47:28,398 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=1096, PETRI_PLACES=298, PETRI_TRANSITIONS=283} [2021-11-09 10:47:28,398 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, 75 predicate places. [2021-11-09 10:47:28,398 INFO L470 AbstractCegarLoop]: Abstraction has has 298 places, 283 transitions, 1096 flow [2021-11-09 10:47:28,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 145.4) internal successors, (2908), 20 states have internal predecessors, (2908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:28,399 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 10:47:28,400 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:28,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:47:28,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:28,616 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 10:47:28,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:28,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1539689326, now seen corresponding path program 2 times [2021-11-09 10:47:28,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:28,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454223171] [2021-11-09 10:47:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:28,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:47:29,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:29,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454223171] [2021-11-09 10:47:29,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454223171] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:29,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427942001] [2021-11-09 10:47:29,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:47:29,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:29,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:47:29,048 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:47:29,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 10:47:29,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:47:29,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:47:29,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-09 10:47:29,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:47:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:47:30,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427942001] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:30,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:47:30,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-11-09 10:47:30,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82013159] [2021-11-09 10:47:30,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 10:47:30,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:30,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 10:47:30,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-11-09 10:47:30,532 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 251 [2021-11-09 10:47:30,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 283 transitions, 1096 flow. Second operand has 22 states, 22 states have (on average 144.86363636363637) internal successors, (3187), 22 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:30,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 10:47:30,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 251 [2021-11-09 10:47:30,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 10:47:33,598 INFO L129 PetriNetUnfolder]: 2288/6530 cut-off events. [2021-11-09 10:47:33,598 INFO L130 PetriNetUnfolder]: For 20649/20710 co-relation queries the response was YES. [2021-11-09 10:47:33,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17703 conditions, 6530 events. 2288/6530 cut-off events. For 20649/20710 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 56875 event pairs, 720 based on Foata normal form. 191/6183 useless extension candidates. Maximal degree in co-relation 17674. Up to 893 conditions per place. [2021-11-09 10:47:33,651 INFO L132 encePairwiseOnDemand]: 211/251 looper letters, 0 selfloop transitions, 0 changer transitions 380/380 dead transitions. [2021-11-09 10:47:33,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 380 transitions, 2117 flow [2021-11-09 10:47:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-09 10:47:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-11-09 10:47:33,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 7495 transitions. [2021-11-09 10:47:33,666 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5634067503570623 [2021-11-09 10:47:33,666 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 7495 transitions. [2021-11-09 10:47:33,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 7495 transitions. [2021-11-09 10:47:33,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:47:33,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 7495 transitions. [2021-11-09 10:47:33,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 141.41509433962264) internal successors, (7495), 53 states have internal predecessors, (7495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:33,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 251.0) internal successors, (13554), 54 states have internal predecessors, (13554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:33,718 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 251.0) internal successors, (13554), 54 states have internal predecessors, (13554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:33,718 INFO L186 Difference]: Start difference. First operand has 298 places, 283 transitions, 1096 flow. Second operand 53 states and 7495 transitions. [2021-11-09 10:47:33,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 380 transitions, 2117 flow [2021-11-09 10:47:33,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 380 transitions, 2044 flow, removed 10 selfloop flow, removed 17 redundant places. [2021-11-09 10:47:33,779 INFO L242 Difference]: Finished difference. Result has 320 places, 0 transitions, 0 flow [2021-11-09 10:47:33,779 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=0, PETRI_PLACES=320, PETRI_TRANSITIONS=0} [2021-11-09 10:47:33,780 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, 97 predicate places. [2021-11-09 10:47:33,780 INFO L470 AbstractCegarLoop]: Abstraction has has 320 places, 0 transitions, 0 flow [2021-11-09 10:47:33,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 144.86363636363637) internal successors, (3187), 22 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:33,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:47:33,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-09 10:47:33,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-09 10:47:33,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-09 10:47:33,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:47:34,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:34,011 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1] [2021-11-09 10:47:34,013 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-09 10:47:34,013 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:47:34,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:47:34 BasicIcfg [2021-11-09 10:47:34,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:47:34,016 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:47:34,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:47:34,017 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:47:34,017 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:47:14" (3/4) ... [2021-11-09 10:47:34,020 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 10:47:34,026 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-09 10:47:34,026 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-09 10:47:34,026 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-11-09 10:47:34,032 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-11-09 10:47:34,033 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-09 10:47:34,033 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 10:47:34,034 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 10:47:34,104 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 10:47:34,104 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:47:34,106 INFO L168 Benchmark]: Toolchain (without parser) took 21495.60 ms. Allocated memory was 94.4 MB in the beginning and 690.0 MB in the end (delta: 595.6 MB). Free memory was 59.2 MB in the beginning and 189.1 MB in the end (delta: -129.9 MB). Peak memory consumption was 465.7 MB. Max. memory is 16.1 GB. [2021-11-09 10:47:34,106 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 67.7 MB in the end (delta: 27.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:47:34,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.68 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 68.0 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:47:34,108 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.10 ms. Allocated memory is still 94.4 MB. Free memory was 68.0 MB in the beginning and 65.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:47:34,108 INFO L168 Benchmark]: Boogie Preprocessor took 40.03 ms. Allocated memory is still 94.4 MB. Free memory was 65.3 MB in the beginning and 63.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:47:34,110 INFO L168 Benchmark]: RCFGBuilder took 1168.95 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 63.2 MB in the beginning and 79.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2021-11-09 10:47:34,110 INFO L168 Benchmark]: TraceAbstraction took 19768.27 ms. Allocated memory was 119.5 MB in the beginning and 690.0 MB in the end (delta: 570.4 MB). Free memory was 79.3 MB in the beginning and 193.5 MB in the end (delta: -114.2 MB). Peak memory consumption was 483.8 MB. Max. memory is 16.1 GB. [2021-11-09 10:47:34,111 INFO L168 Benchmark]: Witness Printer took 87.51 ms. Allocated memory is still 690.0 MB. Free memory was 193.5 MB in the beginning and 189.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 10:47:34,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 67.7 MB in the end (delta: 27.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 374.68 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 68.0 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.10 ms. Allocated memory is still 94.4 MB. Free memory was 68.0 MB in the beginning and 65.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.03 ms. Allocated memory is still 94.4 MB. Free memory was 65.3 MB in the beginning and 63.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1168.95 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 63.2 MB in the beginning and 79.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19768.27 ms. Allocated memory was 119.5 MB in the beginning and 690.0 MB in the end (delta: 570.4 MB). Free memory was 79.3 MB in the beginning and 193.5 MB in the end (delta: -114.2 MB). Peak memory consumption was 483.8 MB. Max. memory is 16.1 GB. * Witness Printer took 87.51 ms. Allocated memory is still 690.0 MB. Free memory was 193.5 MB in the beginning and 189.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 156]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 271 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.6s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 306 SDtfs, 1376 SDslu, 1570 SDs, 0 SdLazy, 2400 SolverSat, 223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1030 GetRequests, 849 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2479 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1096occurred in iteration=10, InterpolantAutomatonStates: 153, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 2970 NumberOfCodeBlocks, 2924 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2955 ConstructedInterpolants, 0 QuantifiedInterpolants, 8631 SizeOfPredicates, 42 NumberOfNonLiveVariables, 1899 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 92/108 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-09 10:47:34,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf78ffc-362a-4370-a460-dc579f6dc009/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE