./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3 --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 1a4ff09f9c2deb27a967851422a8d7e5cb8605b0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:23:23,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:23:23,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:23:23,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:23:23,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:23:23,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:23:23,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:23:23,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:23:23,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:23:23,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:23:23,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:23:23,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:23:23,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:23:23,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:23:23,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:23:23,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:23:23,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:23:23,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:23:23,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:23:23,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:23:23,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:23:23,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:23:23,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:23:23,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:23:23,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:23:23,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:23:23,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:23:23,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:23:23,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:23:23,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:23:23,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:23:23,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:23:23,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:23:23,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:23:23,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:23:23,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:23:23,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:23:23,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:23:23,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:23:23,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:23:23,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:23:23,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:23:23,297 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:23:23,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:23:23,298 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:23:23,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:23:23,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:23:23,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:23:23,300 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:23:23,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:23:23,301 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:23:23,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:23:23,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:23:23,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:23:23,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:23:23,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:23:23,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:23:23,303 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:23:23,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:23:23,303 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:23:23,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:23:23,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:23:23,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:23:23,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:23:23,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:23:23,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:23:23,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:23:23,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:23:23,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:23:23,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:23:23,307 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:23:23,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:23:23,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:23:23,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:23:23,308 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_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a4ff09f9c2deb27a967851422a8d7e5cb8605b0 [2021-10-15 20:23:23,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:23:23,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:23:23,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:23:23,722 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:23:23,723 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:23:23,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c [2021-10-15 20:23:23,817 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/data/b877e8cc3/a9991da78c2842f0a8516542260e7c42/FLAG97182fb49 [2021-10-15 20:23:24,589 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:23:24,590 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c [2021-10-15 20:23:24,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/data/b877e8cc3/a9991da78c2842f0a8516542260e7c42/FLAG97182fb49 [2021-10-15 20:23:24,856 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/data/b877e8cc3/a9991da78c2842f0a8516542260e7c42 [2021-10-15 20:23:24,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:23:24,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:23:24,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:23:24,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:23:24,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:23:24,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:23:24" (1/1) ... [2021-10-15 20:23:24,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee980f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:24, skipping insertion in model container [2021-10-15 20:23:24,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:23:24" (1/1) ... [2021-10-15 20:23:24,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:23:24,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:23:25,318 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_b167a796-547f-49e2-8d2f-4e494ec9af3f/sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c[9329,9342] [2021-10-15 20:23:25,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:23:25,443 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:23:25,530 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_b167a796-547f-49e2-8d2f-4e494ec9af3f/sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c[9329,9342] [2021-10-15 20:23:25,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:23:25,626 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:23:25,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:25 WrapperNode [2021-10-15 20:23:25,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:23:25,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:23:25,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:23:25,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:23:25,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:25" (1/1) ... [2021-10-15 20:23:25,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:25" (1/1) ... [2021-10-15 20:23:25,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:23:25,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:23:25,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:23:25,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:23:25,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:25" (1/1) ... [2021-10-15 20:23:25,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:25" (1/1) ... [2021-10-15 20:23:25,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:25" (1/1) ... [2021-10-15 20:23:25,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:25" (1/1) ... [2021-10-15 20:23:25,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:25" (1/1) ... [2021-10-15 20:23:25,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:25" (1/1) ... [2021-10-15 20:23:25,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:25" (1/1) ... [2021-10-15 20:23:25,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:23:25,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:23:25,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:23:25,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:23:25,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:25" (1/1) ... [2021-10-15 20:23:25,826 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:23:25,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:25,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:23:25,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:23:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:23:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:23:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:23:25,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:23:27,213 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:23:27,216 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2021-10-15 20:23:27,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:23:27 BoogieIcfgContainer [2021-10-15 20:23:27,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:23:27,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:23:27,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:23:27,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:23:27,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:23:24" (1/3) ... [2021-10-15 20:23:27,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fb1784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:23:27, skipping insertion in model container [2021-10-15 20:23:27,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:25" (2/3) ... [2021-10-15 20:23:27,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fb1784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:23:27, skipping insertion in model container [2021-10-15 20:23:27,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:23:27" (3/3) ... [2021-10-15 20:23:27,238 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product51.cil.c [2021-10-15 20:23:27,245 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:23:27,245 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-15 20:23:27,298 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:23:27,306 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, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 20:23:27,306 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-15 20:23:27,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 187 transitions, 374 flow [2021-10-15 20:23:27,391 INFO L129 PetriNetUnfolder]: 65/187 cut-off events. [2021-10-15 20:23:27,391 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:23:27,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 187 events. 65/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 499 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-10-15 20:23:27,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 187 transitions, 374 flow [2021-10-15 20:23:27,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 180 transitions, 360 flow [2021-10-15 20:23:27,416 INFO L129 PetriNetUnfolder]: 25/80 cut-off events. [2021-10-15 20:23:27,416 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:23:27,416 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:27,417 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:27,418 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:27,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:27,425 INFO L82 PathProgramCache]: Analyzing trace with hash 815277316, now seen corresponding path program 1 times [2021-10-15 20:23:27,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:27,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079578093] [2021-10-15 20:23:27,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:27,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:27,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:27,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079578093] [2021-10-15 20:23:27,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079578093] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:27,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:27,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:23:27,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038641956] [2021-10-15 20:23:27,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:23:27,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:27,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:23:27,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:23:27,925 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 187 [2021-10-15 20:23:27,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 180 transitions, 360 flow. Second operand has 2 states, 2 states have (on average 180.5) internal successors, (361), 2 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:27,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:27,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 187 [2021-10-15 20:23:27,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:27,994 INFO L129 PetriNetUnfolder]: 57/175 cut-off events. [2021-10-15 20:23:27,998 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:23:28,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 175 events. 57/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 471 event pairs, 0 based on Foata normal form. 4/120 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2021-10-15 20:23:28,006 INFO L132 encePairwiseOnDemand]: 182/187 looper letters, 0 selfloop transitions, 0 changer transitions 0/175 dead transitions. [2021-10-15 20:23:28,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 175 transitions, 350 flow [2021-10-15 20:23:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:23:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:23:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 365 transitions. [2021-10-15 20:23:28,033 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9759358288770054 [2021-10-15 20:23:28,034 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 365 transitions. [2021-10-15 20:23:28,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 365 transitions. [2021-10-15 20:23:28,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:28,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 365 transitions. [2021-10-15 20:23:28,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 182.5) internal successors, (365), 2 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,064 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,066 INFO L186 Difference]: Start difference. First operand has 119 places, 180 transitions, 360 flow. Second operand 2 states and 365 transitions. [2021-10-15 20:23:28,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 175 transitions, 350 flow [2021-10-15 20:23:28,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 175 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:23:28,079 INFO L242 Difference]: Finished difference. Result has 120 places, 175 transitions, 350 flow [2021-10-15 20:23:28,082 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=350, PETRI_PLACES=120, PETRI_TRANSITIONS=175} [2021-10-15 20:23:28,083 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 1 predicate places. [2021-10-15 20:23:28,084 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 175 transitions, 350 flow [2021-10-15 20:23:28,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 180.5) internal successors, (361), 2 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,085 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:28,085 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:28,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:23:28,087 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:28,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:28,088 INFO L82 PathProgramCache]: Analyzing trace with hash 596441347, now seen corresponding path program 1 times [2021-10-15 20:23:28,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:28,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270822949] [2021-10-15 20:23:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:28,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:28,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:28,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270822949] [2021-10-15 20:23:28,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270822949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:28,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:28,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:23:28,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142856864] [2021-10-15 20:23:28,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:23:28,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:28,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:23:28,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:23:28,302 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 187 [2021-10-15 20:23:28,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 175 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:28,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 187 [2021-10-15 20:23:28,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:28,331 INFO L129 PetriNetUnfolder]: 24/74 cut-off events. [2021-10-15 20:23:28,332 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:23:28,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 74 events. 24/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 76. Up to 8 conditions per place. [2021-10-15 20:23:28,336 INFO L132 encePairwiseOnDemand]: 185/187 looper letters, 1 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2021-10-15 20:23:28,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 152 flow [2021-10-15 20:23:28,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:23:28,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:23:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2021-10-15 20:23:28,341 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9518716577540107 [2021-10-15 20:23:28,341 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2021-10-15 20:23:28,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2021-10-15 20:23:28,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:28,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2021-10-15 20:23:28,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,358 INFO L186 Difference]: Start difference. First operand has 120 places, 175 transitions, 350 flow. Second operand 3 states and 534 transitions. [2021-10-15 20:23:28,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 152 flow [2021-10-15 20:23:28,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:23:28,363 INFO L242 Difference]: Finished difference. Result has 54 places, 74 transitions, 150 flow [2021-10-15 20:23:28,363 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=54, PETRI_TRANSITIONS=74} [2021-10-15 20:23:28,371 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -65 predicate places. [2021-10-15 20:23:28,372 INFO L470 AbstractCegarLoop]: Abstraction has has 54 places, 74 transitions, 150 flow [2021-10-15 20:23:28,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,373 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:28,373 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] [2021-10-15 20:23:28,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:23:28,374 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:28,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:28,375 INFO L82 PathProgramCache]: Analyzing trace with hash -781547841, now seen corresponding path program 1 times [2021-10-15 20:23:28,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:28,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872854423] [2021-10-15 20:23:28,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:28,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:28,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:28,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872854423] [2021-10-15 20:23:28,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872854423] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:28,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:28,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:23:28,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820086266] [2021-10-15 20:23:28,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:23:28,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:23:28,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:23:28,460 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 187 [2021-10-15 20:23:28,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 74 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:28,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 187 [2021-10-15 20:23:28,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:28,485 INFO L129 PetriNetUnfolder]: 46/140 cut-off events. [2021-10-15 20:23:28,486 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:23:28,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 140 events. 46/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 319 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 147. Up to 15 conditions per place. [2021-10-15 20:23:28,487 INFO L132 encePairwiseOnDemand]: 184/187 looper letters, 4 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2021-10-15 20:23:28,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 166 flow [2021-10-15 20:23:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:23:28,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:23:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2021-10-15 20:23:28,491 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9322638146167558 [2021-10-15 20:23:28,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2021-10-15 20:23:28,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2021-10-15 20:23:28,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:28,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2021-10-15 20:23:28,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,500 INFO L186 Difference]: Start difference. First operand has 54 places, 74 transitions, 150 flow. Second operand 3 states and 523 transitions. [2021-10-15 20:23:28,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 166 flow [2021-10-15 20:23:28,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:23:28,505 INFO L242 Difference]: Finished difference. Result has 56 places, 75 transitions, 161 flow [2021-10-15 20:23:28,506 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=56, PETRI_TRANSITIONS=75} [2021-10-15 20:23:28,506 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -63 predicate places. [2021-10-15 20:23:28,507 INFO L470 AbstractCegarLoop]: Abstraction has has 56 places, 75 transitions, 161 flow [2021-10-15 20:23:28,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,508 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:28,508 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] [2021-10-15 20:23:28,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 20:23:28,509 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:28,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:28,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1063081859, now seen corresponding path program 1 times [2021-10-15 20:23:28,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:28,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720068090] [2021-10-15 20:23:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:28,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:28,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:28,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720068090] [2021-10-15 20:23:28,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720068090] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:28,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:28,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:23:28,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599138647] [2021-10-15 20:23:28,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:23:28,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:28,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:23:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:23:28,647 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 187 [2021-10-15 20:23:28,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 75 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:28,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 187 [2021-10-15 20:23:28,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:28,727 INFO L129 PetriNetUnfolder]: 61/201 cut-off events. [2021-10-15 20:23:28,728 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:23:28,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 201 events. 61/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 385 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 243. Up to 23 conditions per place. [2021-10-15 20:23:28,730 INFO L132 encePairwiseOnDemand]: 175/187 looper letters, 9 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2021-10-15 20:23:28,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 203 flow [2021-10-15 20:23:28,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:23:28,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:23:28,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2021-10-15 20:23:28,734 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7932263814616756 [2021-10-15 20:23:28,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2021-10-15 20:23:28,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2021-10-15 20:23:28,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:28,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2021-10-15 20:23:28,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,742 INFO L186 Difference]: Start difference. First operand has 56 places, 75 transitions, 161 flow. Second operand 3 states and 445 transitions. [2021-10-15 20:23:28,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 203 flow [2021-10-15 20:23:28,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:23:28,747 INFO L242 Difference]: Finished difference. Result has 59 places, 77 transitions, 209 flow [2021-10-15 20:23:28,748 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=59, PETRI_TRANSITIONS=77} [2021-10-15 20:23:28,748 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -60 predicate places. [2021-10-15 20:23:28,748 INFO L470 AbstractCegarLoop]: Abstraction has has 59 places, 77 transitions, 209 flow [2021-10-15 20:23:28,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,749 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:28,749 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] [2021-10-15 20:23:28,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 20:23:28,750 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:28,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:28,751 INFO L82 PathProgramCache]: Analyzing trace with hash -460039864, now seen corresponding path program 1 times [2021-10-15 20:23:28,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:28,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810925458] [2021-10-15 20:23:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:28,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:28,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:28,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810925458] [2021-10-15 20:23:28,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810925458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:28,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:28,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:23:28,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127921823] [2021-10-15 20:23:28,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:23:28,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:28,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:23:28,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:23:28,870 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 187 [2021-10-15 20:23:28,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 77 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:28,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:28,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 187 [2021-10-15 20:23:28,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:29,067 INFO L129 PetriNetUnfolder]: 272/862 cut-off events. [2021-10-15 20:23:29,067 INFO L130 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2021-10-15 20:23:29,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 862 events. 272/862 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4367 event pairs, 0 based on Foata normal form. 0/671 useless extension candidates. Maximal degree in co-relation 1208. Up to 109 conditions per place. [2021-10-15 20:23:29,077 INFO L132 encePairwiseOnDemand]: 180/187 looper letters, 6 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2021-10-15 20:23:29,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 267 flow [2021-10-15 20:23:29,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 20:23:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 20:23:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1341 transitions. [2021-10-15 20:23:29,084 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8963903743315508 [2021-10-15 20:23:29,085 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1341 transitions. [2021-10-15 20:23:29,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1341 transitions. [2021-10-15 20:23:29,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:29,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1341 transitions. [2021-10-15 20:23:29,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.625) internal successors, (1341), 8 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:29,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:29,101 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:29,101 INFO L186 Difference]: Start difference. First operand has 59 places, 77 transitions, 209 flow. Second operand 8 states and 1341 transitions. [2021-10-15 20:23:29,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 267 flow [2021-10-15 20:23:29,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 249 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:23:29,115 INFO L242 Difference]: Finished difference. Result has 68 places, 87 transitions, 264 flow [2021-10-15 20:23:29,116 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=264, PETRI_PLACES=68, PETRI_TRANSITIONS=87} [2021-10-15 20:23:29,116 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -51 predicate places. [2021-10-15 20:23:29,117 INFO L470 AbstractCegarLoop]: Abstraction has has 68 places, 87 transitions, 264 flow [2021-10-15 20:23:29,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:29,118 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:29,118 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] [2021-10-15 20:23:29,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 20:23:29,119 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:29,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:29,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1894185024, now seen corresponding path program 1 times [2021-10-15 20:23:29,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:29,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942661972] [2021-10-15 20:23:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:29,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:29,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:29,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942661972] [2021-10-15 20:23:29,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942661972] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:29,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:29,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:23:29,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586115072] [2021-10-15 20:23:29,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:23:29,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:29,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:23:29,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:23:29,240 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 187 [2021-10-15 20:23:29,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 87 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:29,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:29,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 187 [2021-10-15 20:23:29,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:29,574 INFO L129 PetriNetUnfolder]: 536/1702 cut-off events. [2021-10-15 20:23:29,574 INFO L130 PetriNetUnfolder]: For 355/355 co-relation queries the response was YES. [2021-10-15 20:23:29,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2735 conditions, 1702 events. 536/1702 cut-off events. For 355/355 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9953 event pairs, 0 based on Foata normal form. 0/1313 useless extension candidates. Maximal degree in co-relation 2726. Up to 221 conditions per place. [2021-10-15 20:23:29,592 INFO L132 encePairwiseOnDemand]: 173/187 looper letters, 49 selfloop transitions, 38 changer transitions 0/148 dead transitions. [2021-10-15 20:23:29,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 148 transitions, 693 flow [2021-10-15 20:23:29,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:23:29,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 20:23:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1229 transitions. [2021-10-15 20:23:29,598 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7302436125965538 [2021-10-15 20:23:29,599 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1229 transitions. [2021-10-15 20:23:29,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1229 transitions. [2021-10-15 20:23:29,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:29,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1229 transitions. [2021-10-15 20:23:29,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.55555555555554) internal successors, (1229), 9 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:29,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:29,612 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:29,612 INFO L186 Difference]: Start difference. First operand has 68 places, 87 transitions, 264 flow. Second operand 9 states and 1229 transitions. [2021-10-15 20:23:29,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 148 transitions, 693 flow [2021-10-15 20:23:29,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 148 transitions, 693 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:23:29,625 INFO L242 Difference]: Finished difference. Result has 81 places, 118 transitions, 540 flow [2021-10-15 20:23:29,625 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=540, PETRI_PLACES=81, PETRI_TRANSITIONS=118} [2021-10-15 20:23:29,626 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -38 predicate places. [2021-10-15 20:23:29,626 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 118 transitions, 540 flow [2021-10-15 20:23:29,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:29,627 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:29,627 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] [2021-10-15 20:23:29,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 20:23:29,628 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:29,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:29,629 INFO L82 PathProgramCache]: Analyzing trace with hash 656186678, now seen corresponding path program 1 times [2021-10-15 20:23:29,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:29,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043502903] [2021-10-15 20:23:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:29,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:29,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:29,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:29,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043502903] [2021-10-15 20:23:29,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043502903] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:29,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:29,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:23:29,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001504387] [2021-10-15 20:23:29,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:23:29,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:29,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:23:29,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:23:29,719 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 187 [2021-10-15 20:23:29,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 118 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:29,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:29,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 187 [2021-10-15 20:23:29,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:30,147 INFO L129 PetriNetUnfolder]: 960/3216 cut-off events. [2021-10-15 20:23:30,147 INFO L130 PetriNetUnfolder]: For 1317/1317 co-relation queries the response was YES. [2021-10-15 20:23:30,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5679 conditions, 3216 events. 960/3216 cut-off events. For 1317/1317 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 23939 event pairs, 16 based on Foata normal form. 0/2649 useless extension candidates. Maximal degree in co-relation 5665. Up to 437 conditions per place. [2021-10-15 20:23:30,183 INFO L132 encePairwiseOnDemand]: 179/187 looper letters, 14 selfloop transitions, 8 changer transitions 0/126 dead transitions. [2021-10-15 20:23:30,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 126 transitions, 616 flow [2021-10-15 20:23:30,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:23:30,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:23:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 596 transitions. [2021-10-15 20:23:30,188 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7967914438502673 [2021-10-15 20:23:30,188 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 596 transitions. [2021-10-15 20:23:30,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 596 transitions. [2021-10-15 20:23:30,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:30,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 596 transitions. [2021-10-15 20:23:30,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:30,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:30,199 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:30,200 INFO L186 Difference]: Start difference. First operand has 81 places, 118 transitions, 540 flow. Second operand 4 states and 596 transitions. [2021-10-15 20:23:30,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 126 transitions, 616 flow [2021-10-15 20:23:30,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 126 transitions, 616 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:23:30,254 INFO L242 Difference]: Finished difference. Result has 86 places, 124 transitions, 610 flow [2021-10-15 20:23:30,254 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=610, PETRI_PLACES=86, PETRI_TRANSITIONS=124} [2021-10-15 20:23:30,255 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -33 predicate places. [2021-10-15 20:23:30,255 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 124 transitions, 610 flow [2021-10-15 20:23:30,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:30,256 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:30,256 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] [2021-10-15 20:23:30,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 20:23:30,256 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:30,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:30,257 INFO L82 PathProgramCache]: Analyzing trace with hash -44877900, now seen corresponding path program 1 times [2021-10-15 20:23:30,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:30,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159028784] [2021-10-15 20:23:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:30,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:30,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:30,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159028784] [2021-10-15 20:23:30,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159028784] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:30,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:30,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:23:30,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407369157] [2021-10-15 20:23:30,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:23:30,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:30,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:23:30,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:23:30,359 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 187 [2021-10-15 20:23:30,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 124 transitions, 610 flow. Second operand has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:30,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:30,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 187 [2021-10-15 20:23:30,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:30,880 INFO L129 PetriNetUnfolder]: 806/3290 cut-off events. [2021-10-15 20:23:30,880 INFO L130 PetriNetUnfolder]: For 1411/1411 co-relation queries the response was YES. [2021-10-15 20:23:30,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6215 conditions, 3290 events. 806/3290 cut-off events. For 1411/1411 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 26410 event pairs, 48 based on Foata normal form. 104/2949 useless extension candidates. Maximal degree in co-relation 6198. Up to 401 conditions per place. [2021-10-15 20:23:30,909 INFO L132 encePairwiseOnDemand]: 175/187 looper letters, 24 selfloop transitions, 12 changer transitions 0/130 dead transitions. [2021-10-15 20:23:30,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 130 transitions, 675 flow [2021-10-15 20:23:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:23:30,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:23:30,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 819 transitions. [2021-10-15 20:23:30,914 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7299465240641712 [2021-10-15 20:23:30,915 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 819 transitions. [2021-10-15 20:23:30,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 819 transitions. [2021-10-15 20:23:30,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:30,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 819 transitions. [2021-10-15 20:23:30,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:30,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:30,924 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:30,924 INFO L186 Difference]: Start difference. First operand has 86 places, 124 transitions, 610 flow. Second operand 6 states and 819 transitions. [2021-10-15 20:23:30,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 130 transitions, 675 flow [2021-10-15 20:23:30,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 130 transitions, 666 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-10-15 20:23:30,946 INFO L242 Difference]: Finished difference. Result has 94 places, 130 transitions, 669 flow [2021-10-15 20:23:30,947 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=669, PETRI_PLACES=94, PETRI_TRANSITIONS=130} [2021-10-15 20:23:30,947 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -25 predicate places. [2021-10-15 20:23:30,947 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 130 transitions, 669 flow [2021-10-15 20:23:30,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:30,948 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:30,948 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] [2021-10-15 20:23:30,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 20:23:30,949 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:30,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:30,950 INFO L82 PathProgramCache]: Analyzing trace with hash 69380664, now seen corresponding path program 1 times [2021-10-15 20:23:30,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:30,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38190062] [2021-10-15 20:23:30,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:30,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:31,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:31,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38190062] [2021-10-15 20:23:31,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38190062] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:31,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:31,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:23:31,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039837656] [2021-10-15 20:23:31,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:23:31,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:31,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:23:31,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:23:31,022 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2021-10-15 20:23:31,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 130 transitions, 669 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:31,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:31,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2021-10-15 20:23:31,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:31,557 INFO L129 PetriNetUnfolder]: 937/4050 cut-off events. [2021-10-15 20:23:31,558 INFO L130 PetriNetUnfolder]: For 1669/1669 co-relation queries the response was YES. [2021-10-15 20:23:31,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8284 conditions, 4050 events. 937/4050 cut-off events. For 1669/1669 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 34846 event pairs, 61 based on Foata normal form. 24/3535 useless extension candidates. Maximal degree in co-relation 8264. Up to 501 conditions per place. [2021-10-15 20:23:31,603 INFO L132 encePairwiseOnDemand]: 183/187 looper letters, 10 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2021-10-15 20:23:31,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 132 transitions, 699 flow [2021-10-15 20:23:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:23:31,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:23:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2021-10-15 20:23:31,606 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8591800356506238 [2021-10-15 20:23:31,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2021-10-15 20:23:31,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2021-10-15 20:23:31,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:31,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2021-10-15 20:23:31,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:31,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:31,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:31,616 INFO L186 Difference]: Start difference. First operand has 94 places, 130 transitions, 669 flow. Second operand 3 states and 482 transitions. [2021-10-15 20:23:31,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 132 transitions, 699 flow [2021-10-15 20:23:31,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 132 transitions, 699 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:23:31,659 INFO L242 Difference]: Finished difference. Result has 97 places, 131 transitions, 683 flow [2021-10-15 20:23:31,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=683, PETRI_PLACES=97, PETRI_TRANSITIONS=131} [2021-10-15 20:23:31,660 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -22 predicate places. [2021-10-15 20:23:31,660 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 131 transitions, 683 flow [2021-10-15 20:23:31,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:31,661 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:31,662 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] [2021-10-15 20:23:31,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 20:23:31,663 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:31,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:31,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1964012792, now seen corresponding path program 1 times [2021-10-15 20:23:31,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:31,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261155158] [2021-10-15 20:23:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:31,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:31,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:31,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261155158] [2021-10-15 20:23:31,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261155158] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:31,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:31,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:23:31,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769540205] [2021-10-15 20:23:31,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:23:31,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:23:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:23:31,764 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 187 [2021-10-15 20:23:31,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 131 transitions, 683 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:31,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:31,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 187 [2021-10-15 20:23:31,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:32,377 INFO L129 PetriNetUnfolder]: 963/4228 cut-off events. [2021-10-15 20:23:32,377 INFO L130 PetriNetUnfolder]: For 1767/1767 co-relation queries the response was YES. [2021-10-15 20:23:32,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8712 conditions, 4228 events. 963/4228 cut-off events. For 1767/1767 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 37163 event pairs, 77 based on Foata normal form. 0/3689 useless extension candidates. Maximal degree in co-relation 8690. Up to 507 conditions per place. [2021-10-15 20:23:32,420 INFO L132 encePairwiseOnDemand]: 182/187 looper letters, 7 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2021-10-15 20:23:32,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 136 transitions, 729 flow [2021-10-15 20:23:32,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:23:32,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:23:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2021-10-15 20:23:32,424 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9055258467023173 [2021-10-15 20:23:32,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2021-10-15 20:23:32,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2021-10-15 20:23:32,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:32,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2021-10-15 20:23:32,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:32,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:32,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:32,431 INFO L186 Difference]: Start difference. First operand has 97 places, 131 transitions, 683 flow. Second operand 3 states and 508 transitions. [2021-10-15 20:23:32,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 136 transitions, 729 flow [2021-10-15 20:23:32,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 136 transitions, 727 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:23:32,466 INFO L242 Difference]: Finished difference. Result has 100 places, 136 transitions, 737 flow [2021-10-15 20:23:32,468 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=737, PETRI_PLACES=100, PETRI_TRANSITIONS=136} [2021-10-15 20:23:32,468 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -19 predicate places. [2021-10-15 20:23:32,468 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 136 transitions, 737 flow [2021-10-15 20:23:32,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:32,469 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:32,470 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:32,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 20:23:32,470 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:32,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:32,472 INFO L82 PathProgramCache]: Analyzing trace with hash -370224050, now seen corresponding path program 1 times [2021-10-15 20:23:32,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:32,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926785840] [2021-10-15 20:23:32,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:32,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-15 20:23:32,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:32,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926785840] [2021-10-15 20:23:32,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926785840] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:32,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:32,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:23:32,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188440238] [2021-10-15 20:23:32,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:23:32,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:32,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:23:32,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:23:32,536 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 187 [2021-10-15 20:23:32,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 136 transitions, 737 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:32,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:32,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 187 [2021-10-15 20:23:32,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:33,084 INFO L129 PetriNetUnfolder]: 661/3042 cut-off events. [2021-10-15 20:23:33,085 INFO L130 PetriNetUnfolder]: For 1284/1284 co-relation queries the response was YES. [2021-10-15 20:23:33,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6142 conditions, 3042 events. 661/3042 cut-off events. For 1284/1284 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 24542 event pairs, 13 based on Foata normal form. 68/2650 useless extension candidates. Maximal degree in co-relation 6119. Up to 370 conditions per place. [2021-10-15 20:23:33,113 INFO L132 encePairwiseOnDemand]: 185/187 looper letters, 2 selfloop transitions, 0 changer transitions 11/136 dead transitions. [2021-10-15 20:23:33,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 136 transitions, 747 flow [2021-10-15 20:23:33,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:23:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:23:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2021-10-15 20:23:33,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.93048128342246 [2021-10-15 20:23:33,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2021-10-15 20:23:33,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2021-10-15 20:23:33,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:33,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2021-10-15 20:23:33,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:33,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:33,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:33,126 INFO L186 Difference]: Start difference. First operand has 100 places, 136 transitions, 737 flow. Second operand 3 states and 522 transitions. [2021-10-15 20:23:33,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 136 transitions, 747 flow [2021-10-15 20:23:33,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 735 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:23:33,150 INFO L242 Difference]: Finished difference. Result has 101 places, 125 transitions, 665 flow [2021-10-15 20:23:33,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=665, PETRI_PLACES=101, PETRI_TRANSITIONS=125} [2021-10-15 20:23:33,151 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -18 predicate places. [2021-10-15 20:23:33,151 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 125 transitions, 665 flow [2021-10-15 20:23:33,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:33,152 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:33,152 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:33,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 20:23:33,153 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:33,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:33,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1973254398, now seen corresponding path program 1 times [2021-10-15 20:23:33,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:33,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108681101] [2021-10-15 20:23:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:33,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:33,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:33,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108681101] [2021-10-15 20:23:33,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108681101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:33,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669341698] [2021-10-15 20:23:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:33,328 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:33,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:33,339 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:33,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 20:23:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:33,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 20:23:33,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:33,753 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:33,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669341698] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:33,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 20:23:33,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-15 20:23:33,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185097809] [2021-10-15 20:23:33,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:23:33,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:33,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:23:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:23:33,758 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 187 [2021-10-15 20:23:33,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 125 transitions, 665 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:33,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:33,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 187 [2021-10-15 20:23:33,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:34,062 INFO L129 PetriNetUnfolder]: 265/1446 cut-off events. [2021-10-15 20:23:34,063 INFO L130 PetriNetUnfolder]: For 1087/1087 co-relation queries the response was YES. [2021-10-15 20:23:34,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3075 conditions, 1446 events. 265/1446 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9396 event pairs, 3 based on Foata normal form. 36/1300 useless extension candidates. Maximal degree in co-relation 3051. Up to 177 conditions per place. [2021-10-15 20:23:34,078 INFO L132 encePairwiseOnDemand]: 182/187 looper letters, 15 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2021-10-15 20:23:34,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 101 transitions, 558 flow [2021-10-15 20:23:34,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:23:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:23:34,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-10-15 20:23:34,082 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7789661319073083 [2021-10-15 20:23:34,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-10-15 20:23:34,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-10-15 20:23:34,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:34,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-10-15 20:23:34,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:34,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:34,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:34,089 INFO L186 Difference]: Start difference. First operand has 101 places, 125 transitions, 665 flow. Second operand 3 states and 437 transitions. [2021-10-15 20:23:34,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 101 transitions, 558 flow [2021-10-15 20:23:34,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 101 transitions, 555 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-15 20:23:34,102 INFO L242 Difference]: Finished difference. Result has 92 places, 100 transitions, 517 flow [2021-10-15 20:23:34,103 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=517, PETRI_PLACES=92, PETRI_TRANSITIONS=100} [2021-10-15 20:23:34,103 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -27 predicate places. [2021-10-15 20:23:34,103 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 100 transitions, 517 flow [2021-10-15 20:23:34,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:34,104 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:34,105 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:34,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:34,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-15 20:23:34,324 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:34,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:34,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1183438882, now seen corresponding path program 1 times [2021-10-15 20:23:34,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:34,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850068452] [2021-10-15 20:23:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:34,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:34,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:34,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850068452] [2021-10-15 20:23:34,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850068452] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:34,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:34,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:23:34,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985691442] [2021-10-15 20:23:34,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:23:34,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:23:34,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:23:34,435 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2021-10-15 20:23:34,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 100 transitions, 517 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:34,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:34,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2021-10-15 20:23:34,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:34,733 INFO L129 PetriNetUnfolder]: 322/1810 cut-off events. [2021-10-15 20:23:34,733 INFO L130 PetriNetUnfolder]: For 820/820 co-relation queries the response was YES. [2021-10-15 20:23:34,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3540 conditions, 1810 events. 322/1810 cut-off events. For 820/820 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12779 event pairs, 5 based on Foata normal form. 10/1594 useless extension candidates. Maximal degree in co-relation 3517. Up to 196 conditions per place. [2021-10-15 20:23:34,750 INFO L132 encePairwiseOnDemand]: 181/187 looper letters, 9 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2021-10-15 20:23:34,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 103 transitions, 551 flow [2021-10-15 20:23:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:23:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:23:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2021-10-15 20:23:34,753 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8591800356506238 [2021-10-15 20:23:34,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2021-10-15 20:23:34,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2021-10-15 20:23:34,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:34,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2021-10-15 20:23:34,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:34,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:34,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:34,759 INFO L186 Difference]: Start difference. First operand has 92 places, 100 transitions, 517 flow. Second operand 3 states and 482 transitions. [2021-10-15 20:23:34,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 103 transitions, 551 flow [2021-10-15 20:23:34,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 103 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:23:34,772 INFO L242 Difference]: Finished difference. Result has 94 places, 103 transitions, 539 flow [2021-10-15 20:23:34,772 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=539, PETRI_PLACES=94, PETRI_TRANSITIONS=103} [2021-10-15 20:23:34,773 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -25 predicate places. [2021-10-15 20:23:34,773 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 103 transitions, 539 flow [2021-10-15 20:23:34,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:34,774 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:34,774 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:34,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-15 20:23:34,774 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:34,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:34,775 INFO L82 PathProgramCache]: Analyzing trace with hash -2090460060, now seen corresponding path program 1 times [2021-10-15 20:23:34,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:34,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084509507] [2021-10-15 20:23:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:34,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:34,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:34,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084509507] [2021-10-15 20:23:34,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084509507] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:34,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:34,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 20:23:34,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485683905] [2021-10-15 20:23:34,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:23:34,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:34,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:23:34,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:23:34,905 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 187 [2021-10-15 20:23:34,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 103 transitions, 539 flow. Second operand has 6 states, 6 states have (on average 148.16666666666666) internal successors, (889), 6 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:34,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:34,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 187 [2021-10-15 20:23:34,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:35,981 INFO L129 PetriNetUnfolder]: 926/5209 cut-off events. [2021-10-15 20:23:35,982 INFO L130 PetriNetUnfolder]: For 3164/3164 co-relation queries the response was YES. [2021-10-15 20:23:36,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10421 conditions, 5209 events. 926/5209 cut-off events. For 3164/3164 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 46892 event pairs, 0 based on Foata normal form. 22/4628 useless extension candidates. Maximal degree in co-relation 10397. Up to 616 conditions per place. [2021-10-15 20:23:36,033 INFO L132 encePairwiseOnDemand]: 176/187 looper letters, 22 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2021-10-15 20:23:36,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 131 transitions, 779 flow [2021-10-15 20:23:36,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 20:23:36,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-15 20:23:36,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1662 transitions. [2021-10-15 20:23:36,040 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8079727758872144 [2021-10-15 20:23:36,041 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1662 transitions. [2021-10-15 20:23:36,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1662 transitions. [2021-10-15 20:23:36,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:36,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1662 transitions. [2021-10-15 20:23:36,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.0909090909091) internal successors, (1662), 11 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:36,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 187.0) internal successors, (2244), 12 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:36,057 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 187.0) internal successors, (2244), 12 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:36,057 INFO L186 Difference]: Start difference. First operand has 94 places, 103 transitions, 539 flow. Second operand 11 states and 1662 transitions. [2021-10-15 20:23:36,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 131 transitions, 779 flow [2021-10-15 20:23:36,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 131 transitions, 745 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-10-15 20:23:36,084 INFO L242 Difference]: Finished difference. Result has 107 places, 121 transitions, 706 flow [2021-10-15 20:23:36,085 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=706, PETRI_PLACES=107, PETRI_TRANSITIONS=121} [2021-10-15 20:23:36,085 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -12 predicate places. [2021-10-15 20:23:36,085 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 121 transitions, 706 flow [2021-10-15 20:23:36,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.16666666666666) internal successors, (889), 6 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:36,086 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:36,087 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:36,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-15 20:23:36,087 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:36,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:36,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1832294622, now seen corresponding path program 1 times [2021-10-15 20:23:36,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:36,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119470301] [2021-10-15 20:23:36,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:36,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-15 20:23:36,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:36,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119470301] [2021-10-15 20:23:36,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119470301] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:36,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:36,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:23:36,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588824860] [2021-10-15 20:23:36,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:23:36,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:36,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:23:36,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:23:36,167 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2021-10-15 20:23:36,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 121 transitions, 706 flow. Second operand has 5 states, 5 states have (on average 157.2) internal successors, (786), 5 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:36,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:36,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2021-10-15 20:23:36,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:36,645 INFO L129 PetriNetUnfolder]: 400/2502 cut-off events. [2021-10-15 20:23:36,646 INFO L130 PetriNetUnfolder]: For 1401/1401 co-relation queries the response was YES. [2021-10-15 20:23:36,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5270 conditions, 2502 events. 400/2502 cut-off events. For 1401/1401 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 19780 event pairs, 0 based on Foata normal form. 12/2234 useless extension candidates. Maximal degree in co-relation 5242. Up to 296 conditions per place. [2021-10-15 20:23:36,664 INFO L132 encePairwiseOnDemand]: 181/187 looper letters, 0 selfloop transitions, 0 changer transitions 98/98 dead transitions. [2021-10-15 20:23:36,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 98 transitions, 574 flow [2021-10-15 20:23:36,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:23:36,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:23:36,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 790 transitions. [2021-10-15 20:23:36,669 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8449197860962567 [2021-10-15 20:23:36,669 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 790 transitions. [2021-10-15 20:23:36,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 790 transitions. [2021-10-15 20:23:36,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:36,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 790 transitions. [2021-10-15 20:23:36,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:36,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:36,679 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:36,679 INFO L186 Difference]: Start difference. First operand has 107 places, 121 transitions, 706 flow. Second operand 5 states and 790 transitions. [2021-10-15 20:23:36,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 98 transitions, 574 flow [2021-10-15 20:23:36,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 546 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-10-15 20:23:36,698 INFO L242 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2021-10-15 20:23:36,699 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2021-10-15 20:23:36,699 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -21 predicate places. [2021-10-15 20:23:36,700 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2021-10-15 20:23:36,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 157.2) internal successors, (786), 5 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:36,703 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:23:36,704 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:23:36,704 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:23:36,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-15 20:23:36,710 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:23:36,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:23:36 BoogieIcfgContainer [2021-10-15 20:23:36,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:23:36,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:23:36,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:23:36,718 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:23:36,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:23:27" (3/4) ... [2021-10-15 20:23:36,722 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:23:36,745 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2021-10-15 20:23:36,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-15 20:23:36,748 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-15 20:23:36,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-15 20:23:36,752 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 20:23:36,753 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:23:36,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:23:36,859 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:23:36,859 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:23:36,861 INFO L168 Benchmark]: Toolchain (without parser) took 11998.74 ms. Allocated memory was 113.2 MB in the beginning and 738.2 MB in the end (delta: 625.0 MB). Free memory was 75.7 MB in the beginning and 548.8 MB in the end (delta: -473.2 MB). Peak memory consumption was 152.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:36,862 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 113.2 MB. Free memory was 92.9 MB in the beginning and 92.9 MB in the end (delta: 61.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:23:36,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.99 ms. Allocated memory is still 113.2 MB. Free memory was 75.5 MB in the beginning and 82.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:36,863 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.63 ms. Allocated memory is still 113.2 MB. Free memory was 82.2 MB in the beginning and 78.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:36,863 INFO L168 Benchmark]: Boogie Preprocessor took 65.99 ms. Allocated memory is still 113.2 MB. Free memory was 78.7 MB in the beginning and 75.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:36,864 INFO L168 Benchmark]: RCFGBuilder took 1415.49 ms. Allocated memory is still 113.2 MB. Free memory was 75.8 MB in the beginning and 80.8 MB in the end (delta: -5.0 MB). Peak memory consumption was 41.8 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:36,864 INFO L168 Benchmark]: TraceAbstraction took 9494.36 ms. Allocated memory was 113.2 MB in the beginning and 738.2 MB in the end (delta: 625.0 MB). Free memory was 80.3 MB in the beginning and 558.3 MB in the end (delta: -478.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:36,865 INFO L168 Benchmark]: Witness Printer took 141.73 ms. Allocated memory is still 738.2 MB. Free memory was 558.3 MB in the beginning and 548.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:36,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 113.2 MB. Free memory was 92.9 MB in the beginning and 92.9 MB in the end (delta: 61.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 755.99 ms. Allocated memory is still 113.2 MB. Free memory was 75.5 MB in the beginning and 82.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.63 ms. Allocated memory is still 113.2 MB. Free memory was 82.2 MB in the beginning and 78.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.99 ms. Allocated memory is still 113.2 MB. Free memory was 78.7 MB in the beginning and 75.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1415.49 ms. Allocated memory is still 113.2 MB. Free memory was 75.8 MB in the beginning and 80.8 MB in the end (delta: -5.0 MB). Peak memory consumption was 41.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9494.36 ms. Allocated memory was 113.2 MB in the beginning and 738.2 MB in the end (delta: 625.0 MB). Free memory was 80.3 MB in the beginning and 558.3 MB in the end (delta: -478.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 16.1 GB. * Witness Printer took 141.73 ms. Allocated memory is still 738.2 MB. Free memory was 558.3 MB in the beginning and 548.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 627]: 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 CFG has 1 procedures, 123 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9417.1ms, OverallIterations: 15, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 6541.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 96.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 109 SDtfs, 119 SDslu, 113 SDs, 0 SdLazy, 245 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 601.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 332.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=737occurred in iteration=10, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 136.1ms SsaConstructionTime, 675.9ms SatisfiabilityAnalysisTime, 1302.1ms InterpolantComputationTime, 619 NumberOfCodeBlocks, 619 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 603 ConstructedInterpolants, 0 QuantifiedInterpolants, 1096 SizeOfPredicates, 0 NumberOfNonLiveVariables, 444 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 16 InterpolantComputations, 15 PerfectInterpolantSequences, 106/115 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 20:23:36,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b167a796-547f-49e2-8d2f-4e494ec9af3f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...