./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product64.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_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/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_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product64.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/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_cacdb289-8e24-4c9a-8a35-f8d214775329/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 971f321085a5fe2a6884c3e74d64bb1fd31da7c8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 20:21:48,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:21:48,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:21:48,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:21:48,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:21:48,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:21:48,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:21:48,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:21:48,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:21:48,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:21:48,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:21:48,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:21:48,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:21:48,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:21:48,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:21:48,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:21:48,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:21:48,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:21:48,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:21:48,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:21:48,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:21:48,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:21:48,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:21:48,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:21:48,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:21:48,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:21:48,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:21:48,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:21:48,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:21:48,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:21:48,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:21:48,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:21:48,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:21:48,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:21:48,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:21:48,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:21:48,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:21:48,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:21:48,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:21:48,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:21:48,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:21:48,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:21:48,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:21:48,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:21:48,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:21:48,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:21:48,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:21:48,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:21:48,741 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:21:48,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:21:48,742 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:21:48,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:21:48,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:21:48,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:21:48,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:21:48,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:21:48,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:21:48,744 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:21:48,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:21:48,745 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:21:48,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:21:48,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:21:48,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:21:48,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:21:48,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:21:48,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:21:48,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:21:48,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:21:48,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:21:48,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:21:48,747 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:21:48,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:21:48,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:21:48,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:21:48,750 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_cacdb289-8e24-4c9a-8a35-f8d214775329/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971f321085a5fe2a6884c3e74d64bb1fd31da7c8 [2021-10-15 20:21:49,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:21:49,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:21:49,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:21:49,203 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:21:49,203 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:21:49,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/product-lines/minepump_spec4_product64.cil.c [2021-10-15 20:21:49,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/data/7a1f44aa8/ee3c43b755104826b97693505e9f36fb/FLAG5f80fc319 [2021-10-15 20:21:49,997 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:21:49,998 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/sv-benchmarks/c/product-lines/minepump_spec4_product64.cil.c [2021-10-15 20:21:50,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/data/7a1f44aa8/ee3c43b755104826b97693505e9f36fb/FLAG5f80fc319 [2021-10-15 20:21:50,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/data/7a1f44aa8/ee3c43b755104826b97693505e9f36fb [2021-10-15 20:21:50,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:21:50,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:21:50,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:21:50,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:21:50,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:21:50,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:21:50" (1/1) ... [2021-10-15 20:21:50,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce5489c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:50, skipping insertion in model container [2021-10-15 20:21:50,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:21:50" (1/1) ... [2021-10-15 20:21:50,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:21:50,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:21:50,594 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_cacdb289-8e24-4c9a-8a35-f8d214775329/sv-benchmarks/c/product-lines/minepump_spec4_product64.cil.c[2897,2910] [2021-10-15 20:21:50,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:21:50,725 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:21:50,745 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_cacdb289-8e24-4c9a-8a35-f8d214775329/sv-benchmarks/c/product-lines/minepump_spec4_product64.cil.c[2897,2910] [2021-10-15 20:21:50,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:21:50,835 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:21:50,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:50 WrapperNode [2021-10-15 20:21:50,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:21:50,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:21:50,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:21:50,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:21:50,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:50" (1/1) ... [2021-10-15 20:21:50,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:50" (1/1) ... [2021-10-15 20:21:50,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:21:50,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:21:50,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:21:50,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:21:50,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:50" (1/1) ... [2021-10-15 20:21:50,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:50" (1/1) ... [2021-10-15 20:21:50,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:50" (1/1) ... [2021-10-15 20:21:50,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:50" (1/1) ... [2021-10-15 20:21:51,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:50" (1/1) ... [2021-10-15 20:21:51,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:50" (1/1) ... [2021-10-15 20:21:51,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:50" (1/1) ... [2021-10-15 20:21:51,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:21:51,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:21:51,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:21:51,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:21:51,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:50" (1/1) ... [2021-10-15 20:21:51,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:21:51,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:21:51,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:21:51,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:21:51,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:21:51,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:21:51,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:21:51,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:21:52,646 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:21:52,647 INFO L299 CfgBuilder]: Removed 354 assume(true) statements. [2021-10-15 20:21:52,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:21:52 BoogieIcfgContainer [2021-10-15 20:21:52,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:21:52,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:21:52,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:21:52,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:21:52,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:21:50" (1/3) ... [2021-10-15 20:21:52,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb705d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:21:52, skipping insertion in model container [2021-10-15 20:21:52,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:50" (2/3) ... [2021-10-15 20:21:52,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb705d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:21:52, skipping insertion in model container [2021-10-15 20:21:52,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:21:52" (3/3) ... [2021-10-15 20:21:52,661 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product64.cil.c [2021-10-15 20:21:52,668 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:21:52,668 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-15 20:21:52,727 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:21:52,734 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 20:21:52,734 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-15 20:21:52,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 227 places, 339 transitions, 678 flow [2021-10-15 20:21:52,867 INFO L129 PetriNetUnfolder]: 113/339 cut-off events. [2021-10-15 20:21:52,869 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:21:52,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 339 events. 113/339 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1244 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 0. Up to 20 conditions per place. [2021-10-15 20:21:52,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 339 transitions, 678 flow [2021-10-15 20:21:52,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 332 transitions, 664 flow [2021-10-15 20:21:52,897 INFO L129 PetriNetUnfolder]: 24/80 cut-off events. [2021-10-15 20:21:52,897 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:21:52,898 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:21:52,898 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:21:52,899 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 20:21:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:21:52,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1807762564, now seen corresponding path program 1 times [2021-10-15 20:21:52,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:21:52,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402083256] [2021-10-15 20:21:52,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:52,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:21:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:53,283 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 20:21:53,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:21:53,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402083256] [2021-10-15 20:21:53,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402083256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:21:53,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:21:53,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:21:53,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618155322] [2021-10-15 20:21:53,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:21:53,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:21:53,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:21:53,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:21:53,332 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 339 [2021-10-15 20:21:53,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 332 transitions, 664 flow. Second operand has 2 states, 2 states have (on average 332.5) internal successors, (665), 2 states have internal predecessors, (665), 0 states have call successors, (0), 0 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 20:21:53,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:21:53,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 339 [2021-10-15 20:21:53,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:21:53,428 INFO L129 PetriNetUnfolder]: 105/327 cut-off events. [2021-10-15 20:21:53,437 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:21:53,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 327 events. 105/327 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1197 event pairs, 0 based on Foata normal form. 4/224 useless extension candidates. Maximal degree in co-relation 327. Up to 20 conditions per place. [2021-10-15 20:21:53,445 INFO L132 encePairwiseOnDemand]: 334/339 looper letters, 0 selfloop transitions, 0 changer transitions 0/327 dead transitions. [2021-10-15 20:21:53,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 327 transitions, 654 flow [2021-10-15 20:21:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:21:53,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:21:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 669 transitions. [2021-10-15 20:21:53,475 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9867256637168141 [2021-10-15 20:21:53,476 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 669 transitions. [2021-10-15 20:21:53,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 669 transitions. [2021-10-15 20:21:53,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:21:53,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 669 transitions. [2021-10-15 20:21:53,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 334.5) internal successors, (669), 2 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:21:53,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 0 states have call successors, (0), 0 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 20:21:53,511 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 0 states have call successors, (0), 0 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 20:21:53,513 INFO L186 Difference]: Start difference. First operand has 223 places, 332 transitions, 664 flow. Second operand 2 states and 669 transitions. [2021-10-15 20:21:53,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 327 transitions, 654 flow [2021-10-15 20:21:53,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 327 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:21:53,538 INFO L242 Difference]: Finished difference. Result has 224 places, 327 transitions, 654 flow [2021-10-15 20:21:53,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=654, PETRI_PLACES=224, PETRI_TRANSITIONS=327} [2021-10-15 20:21:53,542 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, 1 predicate places. [2021-10-15 20:21:53,543 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 327 transitions, 654 flow [2021-10-15 20:21:53,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 332.5) internal successors, (665), 2 states have internal predecessors, (665), 0 states have call successors, (0), 0 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 20:21:53,544 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:21:53,545 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:21:53,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:21:53,546 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 20:21:53,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:21:53,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1440447835, now seen corresponding path program 1 times [2021-10-15 20:21:53,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:21:53,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260163101] [2021-10-15 20:21:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:53,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:21:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:53,764 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 20:21:53,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:21:53,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260163101] [2021-10-15 20:21:53,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260163101] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:21:53,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:21:53,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:21:53,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057684527] [2021-10-15 20:21:53,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:21:53,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:21:53,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:21:53,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:21:53,776 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 339 [2021-10-15 20:21:53,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 327 transitions, 654 flow. Second operand has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 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 20:21:53,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:21:53,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 339 [2021-10-15 20:21:53,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:21:53,810 INFO L129 PetriNetUnfolder]: 40/124 cut-off events. [2021-10-15 20:21:53,815 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:21:53,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 124 events. 40/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 216 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 126. Up to 20 conditions per place. [2021-10-15 20:21:53,819 INFO L132 encePairwiseOnDemand]: 337/339 looper letters, 1 selfloop transitions, 1 changer transitions 0/124 dead transitions. [2021-10-15 20:21:53,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 124 transitions, 252 flow [2021-10-15 20:21:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:21:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:21:53,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 990 transitions. [2021-10-15 20:21:53,824 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9734513274336283 [2021-10-15 20:21:53,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 990 transitions. [2021-10-15 20:21:53,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 990 transitions. [2021-10-15 20:21:53,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:21:53,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 990 transitions. [2021-10-15 20:21:53,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:21:53,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 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 20:21:53,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 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 20:21:53,845 INFO L186 Difference]: Start difference. First operand has 224 places, 327 transitions, 654 flow. Second operand 3 states and 990 transitions. [2021-10-15 20:21:53,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 124 transitions, 252 flow [2021-10-15 20:21:53,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 124 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:21:53,855 INFO L242 Difference]: Finished difference. Result has 88 places, 124 transitions, 250 flow [2021-10-15 20:21:53,856 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=88, PETRI_TRANSITIONS=124} [2021-10-15 20:21:53,864 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -135 predicate places. [2021-10-15 20:21:53,864 INFO L470 AbstractCegarLoop]: Abstraction has has 88 places, 124 transitions, 250 flow [2021-10-15 20:21:53,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 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 20:21:53,866 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:21:53,866 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] [2021-10-15 20:21:53,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:21:53,867 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 20:21:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:21:53,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1020108702, now seen corresponding path program 1 times [2021-10-15 20:21:53,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:21:53,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060129738] [2021-10-15 20:21:53,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:53,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:21:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:54,030 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 20:21:54,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:21:54,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060129738] [2021-10-15 20:21:54,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060129738] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:21:54,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:21:54,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:21:54,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141462163] [2021-10-15 20:21:54,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:21:54,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:21:54,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:21:54,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:21:54,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 339 [2021-10-15 20:21:54,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 124 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 319.4) internal successors, (1597), 5 states have internal predecessors, (1597), 0 states have call successors, (0), 0 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 20:21:54,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:21:54,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 339 [2021-10-15 20:21:54,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:21:54,133 INFO L129 PetriNetUnfolder]: 50/157 cut-off events. [2021-10-15 20:21:54,134 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:21:54,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 157 events. 50/157 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 374 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 170. Up to 20 conditions per place. [2021-10-15 20:21:54,136 INFO L132 encePairwiseOnDemand]: 332/339 looper letters, 6 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2021-10-15 20:21:54,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 127 transitions, 280 flow [2021-10-15 20:21:54,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:21:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:21:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1921 transitions. [2021-10-15 20:21:54,144 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-10-15 20:21:54,145 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1921 transitions. [2021-10-15 20:21:54,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1921 transitions. [2021-10-15 20:21:54,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:21:54,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1921 transitions. [2021-10-15 20:21:54,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 320.1666666666667) internal successors, (1921), 6 states have internal predecessors, (1921), 0 states have call successors, (0), 0 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 20:21:54,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 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 20:21:54,166 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 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 20:21:54,166 INFO L186 Difference]: Start difference. First operand has 88 places, 124 transitions, 250 flow. Second operand 6 states and 1921 transitions. [2021-10-15 20:21:54,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 127 transitions, 280 flow [2021-10-15 20:21:54,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 127 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:21:54,173 INFO L242 Difference]: Finished difference. Result has 94 places, 127 transitions, 282 flow [2021-10-15 20:21:54,173 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=94, PETRI_TRANSITIONS=127} [2021-10-15 20:21:54,174 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -129 predicate places. [2021-10-15 20:21:54,174 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 127 transitions, 282 flow [2021-10-15 20:21:54,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 319.4) internal successors, (1597), 5 states have internal predecessors, (1597), 0 states have call successors, (0), 0 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 20:21:54,176 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:21:54,177 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] [2021-10-15 20:21:54,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 20:21:54,178 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 20:21:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:21:54,178 INFO L82 PathProgramCache]: Analyzing trace with hash -985343718, now seen corresponding path program 1 times [2021-10-15 20:21:54,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:21:54,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242790311] [2021-10-15 20:21:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:54,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:21:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:54,242 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 20:21:54,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:21:54,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242790311] [2021-10-15 20:21:54,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242790311] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:21:54,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:21:54,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:21:54,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897544701] [2021-10-15 20:21:54,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:21:54,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:21:54,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:21:54,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:21:54,249 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 339 [2021-10-15 20:21:54,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 127 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 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 20:21:54,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:21:54,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 339 [2021-10-15 20:21:54,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:21:54,318 INFO L129 PetriNetUnfolder]: 44/157 cut-off events. [2021-10-15 20:21:54,318 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-15 20:21:54,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 157 events. 44/157 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 181 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 200. Up to 19 conditions per place. [2021-10-15 20:21:54,320 INFO L132 encePairwiseOnDemand]: 322/339 looper letters, 12 selfloop transitions, 12 changer transitions 0/106 dead transitions. [2021-10-15 20:21:54,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 106 transitions, 288 flow [2021-10-15 20:21:54,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:21:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:21:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 801 transitions. [2021-10-15 20:21:54,325 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7876106194690266 [2021-10-15 20:21:54,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 801 transitions. [2021-10-15 20:21:54,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 801 transitions. [2021-10-15 20:21:54,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:21:54,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 801 transitions. [2021-10-15 20:21:54,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 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 20:21:54,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 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 20:21:54,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 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 20:21:54,334 INFO L186 Difference]: Start difference. First operand has 94 places, 127 transitions, 282 flow. Second operand 3 states and 801 transitions. [2021-10-15 20:21:54,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 106 transitions, 288 flow [2021-10-15 20:21:54,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 106 transitions, 283 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 20:21:54,339 INFO L242 Difference]: Finished difference. Result has 80 places, 105 transitions, 291 flow [2021-10-15 20:21:54,339 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=80, PETRI_TRANSITIONS=105} [2021-10-15 20:21:54,339 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -143 predicate places. [2021-10-15 20:21:54,339 INFO L470 AbstractCegarLoop]: Abstraction has has 80 places, 105 transitions, 291 flow [2021-10-15 20:21:54,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 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 20:21:54,340 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:21:54,341 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] [2021-10-15 20:21:54,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 20:21:54,341 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 20:21:54,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:21:54,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1574884233, now seen corresponding path program 1 times [2021-10-15 20:21:54,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:21:54,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707421012] [2021-10-15 20:21:54,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:54,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:21:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:54,471 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 20:21:54,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:21:54,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707421012] [2021-10-15 20:21:54,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707421012] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:21:54,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:21:54,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:21:54,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769366491] [2021-10-15 20:21:54,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:21:54,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:21:54,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:21:54,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:21:54,484 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 339 [2021-10-15 20:21:54,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 105 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 281.8) internal successors, (1409), 5 states have internal predecessors, (1409), 0 states have call successors, (0), 0 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 20:21:54,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:21:54,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 339 [2021-10-15 20:21:54,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:21:54,631 INFO L129 PetriNetUnfolder]: 108/393 cut-off events. [2021-10-15 20:21:54,631 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2021-10-15 20:21:54,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 393 events. 108/393 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1251 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 576. Up to 39 conditions per place. [2021-10-15 20:21:54,636 INFO L132 encePairwiseOnDemand]: 330/339 looper letters, 27 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2021-10-15 20:21:54,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 399 flow [2021-10-15 20:21:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:21:54,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:21:54,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1727 transitions. [2021-10-15 20:21:54,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8490658800393314 [2021-10-15 20:21:54,644 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1727 transitions. [2021-10-15 20:21:54,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1727 transitions. [2021-10-15 20:21:54,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:21:54,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1727 transitions. [2021-10-15 20:21:54,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 287.8333333333333) internal successors, (1727), 6 states have internal predecessors, (1727), 0 states have call successors, (0), 0 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 20:21:54,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 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 20:21:54,660 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 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 20:21:54,660 INFO L186 Difference]: Start difference. First operand has 80 places, 105 transitions, 291 flow. Second operand 6 states and 1727 transitions. [2021-10-15 20:21:54,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 399 flow [2021-10-15 20:21:54,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 124 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:21:54,668 INFO L242 Difference]: Finished difference. Result has 86 places, 112 transitions, 327 flow [2021-10-15 20:21:54,669 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=86, PETRI_TRANSITIONS=112} [2021-10-15 20:21:54,669 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -137 predicate places. [2021-10-15 20:21:54,669 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 112 transitions, 327 flow [2021-10-15 20:21:54,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 281.8) internal successors, (1409), 5 states have internal predecessors, (1409), 0 states have call successors, (0), 0 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 20:21:54,672 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:21:54,672 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 20:21:54,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 20:21:54,672 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 20:21:54,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:21:54,673 INFO L82 PathProgramCache]: Analyzing trace with hash 760774073, now seen corresponding path program 1 times [2021-10-15 20:21:54,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:21:54,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455023395] [2021-10-15 20:21:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:54,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:21:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:54,759 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 20:21:54,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:21:54,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455023395] [2021-10-15 20:21:54,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455023395] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:21:54,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:21:54,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:21:54,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212676541] [2021-10-15 20:21:54,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:21:54,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:21:54,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:21:54,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:21:54,765 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 339 [2021-10-15 20:21:54,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 112 transitions, 327 flow. Second operand has 5 states, 5 states have (on average 246.4) internal successors, (1232), 5 states have internal predecessors, (1232), 0 states have call successors, (0), 0 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 20:21:54,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:21:54,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 339 [2021-10-15 20:21:54,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:21:55,026 INFO L129 PetriNetUnfolder]: 196/682 cut-off events. [2021-10-15 20:21:55,026 INFO L130 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2021-10-15 20:21:55,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 682 events. 196/682 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2707 event pairs, 0 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 1099. Up to 67 conditions per place. [2021-10-15 20:21:55,031 INFO L132 encePairwiseOnDemand]: 322/339 looper letters, 49 selfloop transitions, 43 changer transitions 0/174 dead transitions. [2021-10-15 20:21:55,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 174 transitions, 735 flow [2021-10-15 20:21:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:21:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 20:21:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2292 transitions. [2021-10-15 20:21:55,053 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7512291052114061 [2021-10-15 20:21:55,053 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2292 transitions. [2021-10-15 20:21:55,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2292 transitions. [2021-10-15 20:21:55,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:21:55,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2292 transitions. [2021-10-15 20:21:55,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 254.66666666666666) internal successors, (2292), 9 states have internal predecessors, (2292), 0 states have call successors, (0), 0 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 20:21:55,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 339.0) internal successors, (3390), 10 states have internal predecessors, (3390), 0 states have call successors, (0), 0 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 20:21:55,071 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 339.0) internal successors, (3390), 10 states have internal predecessors, (3390), 0 states have call successors, (0), 0 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 20:21:55,071 INFO L186 Difference]: Start difference. First operand has 86 places, 112 transitions, 327 flow. Second operand 9 states and 2292 transitions. [2021-10-15 20:21:55,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 174 transitions, 735 flow [2021-10-15 20:21:55,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 174 transitions, 735 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:21:55,078 INFO L242 Difference]: Finished difference. Result has 102 places, 143 transitions, 637 flow [2021-10-15 20:21:55,079 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=637, PETRI_PLACES=102, PETRI_TRANSITIONS=143} [2021-10-15 20:21:55,079 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -121 predicate places. [2021-10-15 20:21:55,079 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 143 transitions, 637 flow [2021-10-15 20:21:55,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 246.4) internal successors, (1232), 5 states have internal predecessors, (1232), 0 states have call successors, (0), 0 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 20:21:55,080 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:21:55,080 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:21:55,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 20:21:55,081 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 20:21:55,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:21:55,081 INFO L82 PathProgramCache]: Analyzing trace with hash -96374273, now seen corresponding path program 1 times [2021-10-15 20:21:55,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:21:55,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745107916] [2021-10-15 20:21:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:55,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:21:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:55,130 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 20:21:55,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:21:55,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745107916] [2021-10-15 20:21:55,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745107916] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:21:55,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:21:55,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:21:55,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828288044] [2021-10-15 20:21:55,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:21:55,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:21:55,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:21:55,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:21:55,140 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 339 [2021-10-15 20:21:55,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 143 transitions, 637 flow. Second operand has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 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 20:21:55,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:21:55,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 339 [2021-10-15 20:21:55,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:21:55,383 INFO L129 PetriNetUnfolder]: 295/1074 cut-off events. [2021-10-15 20:21:55,384 INFO L130 PetriNetUnfolder]: For 637/637 co-relation queries the response was YES. [2021-10-15 20:21:55,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 1074 events. 295/1074 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5121 event pairs, 0 based on Foata normal form. 14/912 useless extension candidates. Maximal degree in co-relation 1854. Up to 107 conditions per place. [2021-10-15 20:21:55,394 INFO L132 encePairwiseOnDemand]: 330/339 looper letters, 24 selfloop transitions, 9 changer transitions 0/153 dead transitions. [2021-10-15 20:21:55,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 153 transitions, 769 flow [2021-10-15 20:21:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:21:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:21:55,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1184 transitions. [2021-10-15 20:21:55,400 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8731563421828908 [2021-10-15 20:21:55,400 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1184 transitions. [2021-10-15 20:21:55,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1184 transitions. [2021-10-15 20:21:55,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:21:55,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1184 transitions. [2021-10-15 20:21:55,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:21:55,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 339.0) internal successors, (1695), 5 states have internal predecessors, (1695), 0 states have call successors, (0), 0 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 20:21:55,411 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 339.0) internal successors, (1695), 5 states have internal predecessors, (1695), 0 states have call successors, (0), 0 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 20:21:55,412 INFO L186 Difference]: Start difference. First operand has 102 places, 143 transitions, 637 flow. Second operand 4 states and 1184 transitions. [2021-10-15 20:21:55,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 153 transitions, 769 flow [2021-10-15 20:21:55,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 153 transitions, 761 flow, removed 4 selfloop flow, removed 0 redundant places. [2021-10-15 20:21:55,424 INFO L242 Difference]: Finished difference. Result has 107 places, 146 transitions, 693 flow [2021-10-15 20:21:55,424 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=693, PETRI_PLACES=107, PETRI_TRANSITIONS=146} [2021-10-15 20:21:55,424 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -116 predicate places. [2021-10-15 20:21:55,425 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 146 transitions, 693 flow [2021-10-15 20:21:55,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 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 20:21:55,426 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:21:55,426 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:21:55,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 20:21:55,426 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 20:21:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:21:55,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1376237951, now seen corresponding path program 1 times [2021-10-15 20:21:55,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:21:55,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675609637] [2021-10-15 20:21:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:55,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:21:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:55,481 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 20:21:55,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:21:55,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675609637] [2021-10-15 20:21:55,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675609637] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:21:55,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:21:55,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:21:55,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062085001] [2021-10-15 20:21:55,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:21:55,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:21:55,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:21:55,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:21:55,486 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 339 [2021-10-15 20:21:55,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 146 transitions, 693 flow. Second operand has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 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 20:21:55,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:21:55,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 339 [2021-10-15 20:21:55,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:21:55,837 INFO L129 PetriNetUnfolder]: 635/2304 cut-off events. [2021-10-15 20:21:55,837 INFO L130 PetriNetUnfolder]: For 1316/1316 co-relation queries the response was YES. [2021-10-15 20:21:55,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 2304 events. 635/2304 cut-off events. For 1316/1316 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 14621 event pairs, 1 based on Foata normal form. 0/1954 useless extension candidates. Maximal degree in co-relation 4182. Up to 248 conditions per place. [2021-10-15 20:21:55,857 INFO L132 encePairwiseOnDemand]: 324/339 looper letters, 17 selfloop transitions, 20 changer transitions 0/162 dead transitions. [2021-10-15 20:21:55,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 162 transitions, 835 flow [2021-10-15 20:21:55,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:21:55,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:21:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1333 transitions. [2021-10-15 20:21:55,863 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7864306784660767 [2021-10-15 20:21:55,864 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1333 transitions. [2021-10-15 20:21:55,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1333 transitions. [2021-10-15 20:21:55,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:21:55,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1333 transitions. [2021-10-15 20:21:55,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 266.6) internal successors, (1333), 5 states have internal predecessors, (1333), 0 states have call successors, (0), 0 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 20:21:55,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 339.0) internal successors, (2034), 6 states have internal predecessors, (2034), 0 states have call successors, (0), 0 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 20:21:55,875 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 339.0) internal successors, (2034), 6 states have internal predecessors, (2034), 0 states have call successors, (0), 0 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 20:21:55,875 INFO L186 Difference]: Start difference. First operand has 107 places, 146 transitions, 693 flow. Second operand 5 states and 1333 transitions. [2021-10-15 20:21:55,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 162 transitions, 835 flow [2021-10-15 20:21:55,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 162 transitions, 827 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-10-15 20:21:55,892 INFO L242 Difference]: Finished difference. Result has 113 places, 162 transitions, 853 flow [2021-10-15 20:21:55,892 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=853, PETRI_PLACES=113, PETRI_TRANSITIONS=162} [2021-10-15 20:21:55,893 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -110 predicate places. [2021-10-15 20:21:55,893 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 162 transitions, 853 flow [2021-10-15 20:21:55,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 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 20:21:55,894 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:21:55,894 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:21:55,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 20:21:55,895 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 20:21:55,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:21:55,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1963043965, now seen corresponding path program 1 times [2021-10-15 20:21:55,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:21:55,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795544306] [2021-10-15 20:21:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:55,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:21:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:55,972 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 20:21:55,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:21:55,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795544306] [2021-10-15 20:21:55,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795544306] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:21:55,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:21:55,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:21:55,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854574953] [2021-10-15 20:21:55,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:21:55,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:21:55,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:21:55,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:21:55,978 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 339 [2021-10-15 20:21:55,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 162 transitions, 853 flow. Second operand has 5 states, 5 states have (on average 282.2) internal successors, (1411), 5 states have internal predecessors, (1411), 0 states have call successors, (0), 0 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 20:21:55,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:21:55,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 339 [2021-10-15 20:21:55,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:21:56,534 INFO L129 PetriNetUnfolder]: 774/2871 cut-off events. [2021-10-15 20:21:56,534 INFO L130 PetriNetUnfolder]: For 2521/2521 co-relation queries the response was YES. [2021-10-15 20:21:56,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5653 conditions, 2871 events. 774/2871 cut-off events. For 2521/2521 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 19342 event pairs, 0 based on Foata normal form. 10/2472 useless extension candidates. Maximal degree in co-relation 5630. Up to 315 conditions per place. [2021-10-15 20:21:56,561 INFO L132 encePairwiseOnDemand]: 331/339 looper letters, 34 selfloop transitions, 20 changer transitions 0/184 dead transitions. [2021-10-15 20:21:56,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 184 transitions, 1125 flow [2021-10-15 20:21:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:21:56,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:21:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1720 transitions. [2021-10-15 20:21:56,568 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8456243854473943 [2021-10-15 20:21:56,568 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1720 transitions. [2021-10-15 20:21:56,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1720 transitions. [2021-10-15 20:21:56,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:21:56,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1720 transitions. [2021-10-15 20:21:56,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.6666666666667) internal successors, (1720), 6 states have internal predecessors, (1720), 0 states have call successors, (0), 0 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 20:21:56,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 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 20:21:56,590 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 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 20:21:56,591 INFO L186 Difference]: Start difference. First operand has 113 places, 162 transitions, 853 flow. Second operand 6 states and 1720 transitions. [2021-10-15 20:21:56,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 184 transitions, 1125 flow [2021-10-15 20:21:56,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 184 transitions, 1125 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:21:56,620 INFO L242 Difference]: Finished difference. Result has 122 places, 178 transitions, 1094 flow [2021-10-15 20:21:56,620 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1094, PETRI_PLACES=122, PETRI_TRANSITIONS=178} [2021-10-15 20:21:56,621 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -101 predicate places. [2021-10-15 20:21:56,621 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 178 transitions, 1094 flow [2021-10-15 20:21:56,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.2) internal successors, (1411), 5 states have internal predecessors, (1411), 0 states have call successors, (0), 0 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 20:21:56,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:21:56,623 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1] [2021-10-15 20:21:56,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 20:21:56,623 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 20:21:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:21:56,624 INFO L82 PathProgramCache]: Analyzing trace with hash -2068016443, now seen corresponding path program 1 times [2021-10-15 20:21:56,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:21:56,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158628956] [2021-10-15 20:21:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:56,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:21:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 20:21:56,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:21:56,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158628956] [2021-10-15 20:21:56,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158628956] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:21:56,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:21:56,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:21:56,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800825202] [2021-10-15 20:21:56,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:21:56,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:21:56,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:21:56,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:21:56,732 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 339 [2021-10-15 20:21:56,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 178 transitions, 1094 flow. Second operand has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 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 20:21:56,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:21:56,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 339 [2021-10-15 20:21:56,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:21:57,059 INFO L129 PetriNetUnfolder]: 561/2181 cut-off events. [2021-10-15 20:21:57,060 INFO L130 PetriNetUnfolder]: For 2445/2445 co-relation queries the response was YES. [2021-10-15 20:21:57,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4507 conditions, 2181 events. 561/2181 cut-off events. For 2445/2445 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 13566 event pairs, 0 based on Foata normal form. 21/1897 useless extension candidates. Maximal degree in co-relation 4480. Up to 247 conditions per place. [2021-10-15 20:21:57,080 INFO L132 encePairwiseOnDemand]: 327/339 looper letters, 23 selfloop transitions, 11 changer transitions 0/171 dead transitions. [2021-10-15 20:21:57,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 171 transitions, 1108 flow [2021-10-15 20:21:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:21:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:21:57,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1067 transitions. [2021-10-15 20:21:57,085 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7868731563421829 [2021-10-15 20:21:57,085 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1067 transitions. [2021-10-15 20:21:57,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1067 transitions. [2021-10-15 20:21:57,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:21:57,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1067 transitions. [2021-10-15 20:21:57,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 266.75) internal successors, (1067), 4 states have internal predecessors, (1067), 0 states have call successors, (0), 0 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 20:21:57,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 339.0) internal successors, (1695), 5 states have internal predecessors, (1695), 0 states have call successors, (0), 0 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 20:21:57,094 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 339.0) internal successors, (1695), 5 states have internal predecessors, (1695), 0 states have call successors, (0), 0 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 20:21:57,094 INFO L186 Difference]: Start difference. First operand has 122 places, 178 transitions, 1094 flow. Second operand 4 states and 1067 transitions. [2021-10-15 20:21:57,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 171 transitions, 1108 flow [2021-10-15 20:21:57,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 171 transitions, 1080 flow, removed 14 selfloop flow, removed 0 redundant places. [2021-10-15 20:21:57,115 INFO L242 Difference]: Finished difference. Result has 125 places, 171 transitions, 1044 flow [2021-10-15 20:21:57,116 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1044, PETRI_PLACES=125, PETRI_TRANSITIONS=171} [2021-10-15 20:21:57,116 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -98 predicate places. [2021-10-15 20:21:57,116 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 171 transitions, 1044 flow [2021-10-15 20:21:57,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 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 20:21:57,117 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:21:57,117 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1] [2021-10-15 20:21:57,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 20:21:57,118 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 20:21:57,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:21:57,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1038657145, now seen corresponding path program 1 times [2021-10-15 20:21:57,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:21:57,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816656718] [2021-10-15 20:21:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:57,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:21:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 20:21:57,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:21:57,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816656718] [2021-10-15 20:21:57,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816656718] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:21:57,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:21:57,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:21:57,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644544432] [2021-10-15 20:21:57,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:21:57,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:21:57,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:21:57,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:21:57,183 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 339 [2021-10-15 20:21:57,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 171 transitions, 1044 flow. Second operand has 5 states, 5 states have (on average 237.4) internal successors, (1187), 5 states have internal predecessors, (1187), 0 states have call successors, (0), 0 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 20:21:57,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:21:57,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 339 [2021-10-15 20:21:57,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:21:57,524 INFO L129 PetriNetUnfolder]: 448/1870 cut-off events. [2021-10-15 20:21:57,525 INFO L130 PetriNetUnfolder]: For 1726/1726 co-relation queries the response was YES. [2021-10-15 20:21:57,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3905 conditions, 1870 events. 448/1870 cut-off events. For 1726/1726 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 11309 event pairs, 0 based on Foata normal form. 0/1615 useless extension candidates. Maximal degree in co-relation 3876. Up to 209 conditions per place. [2021-10-15 20:21:57,545 INFO L132 encePairwiseOnDemand]: 322/339 looper letters, 26 selfloop transitions, 15 changer transitions 0/175 dead transitions. [2021-10-15 20:21:57,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 175 transitions, 1077 flow [2021-10-15 20:21:57,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:21:57,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:21:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1455 transitions. [2021-10-15 20:21:57,553 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7153392330383481 [2021-10-15 20:21:57,553 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1455 transitions. [2021-10-15 20:21:57,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1455 transitions. [2021-10-15 20:21:57,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:21:57,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1455 transitions. [2021-10-15 20:21:57,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 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 20:21:57,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 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 20:21:57,567 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 339.0) internal successors, (2373), 7 states have internal predecessors, (2373), 0 states have call successors, (0), 0 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 20:21:57,568 INFO L186 Difference]: Start difference. First operand has 125 places, 171 transitions, 1044 flow. Second operand 6 states and 1455 transitions. [2021-10-15 20:21:57,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 175 transitions, 1077 flow [2021-10-15 20:21:57,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 175 transitions, 1033 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-10-15 20:21:57,593 INFO L242 Difference]: Finished difference. Result has 131 places, 175 transitions, 1033 flow [2021-10-15 20:21:57,593 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1033, PETRI_PLACES=131, PETRI_TRANSITIONS=175} [2021-10-15 20:21:57,594 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -92 predicate places. [2021-10-15 20:21:57,594 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 175 transitions, 1033 flow [2021-10-15 20:21:57,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 237.4) internal successors, (1187), 5 states have internal predecessors, (1187), 0 states have call successors, (0), 0 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 20:21:57,595 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:21:57,595 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, 1, 1, 1, 1, 1, 1] [2021-10-15 20:21:57,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 20:21:57,596 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 20:21:57,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:21:57,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1224537413, now seen corresponding path program 1 times [2021-10-15 20:21:57,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:21:57,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144364758] [2021-10-15 20:21:57,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:57,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:21:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-15 20:21:57,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:21:57,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144364758] [2021-10-15 20:21:57,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144364758] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:21:57,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:21:57,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 20:21:57,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931162531] [2021-10-15 20:21:57,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 20:21:57,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:21:57,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 20:21:57,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 20:21:57,729 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 339 [2021-10-15 20:21:57,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 175 transitions, 1033 flow. Second operand has 7 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 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 20:21:57,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:21:57,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 339 [2021-10-15 20:21:57,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:21:58,349 INFO L129 PetriNetUnfolder]: 849/3471 cut-off events. [2021-10-15 20:21:58,350 INFO L130 PetriNetUnfolder]: For 2861/2861 co-relation queries the response was YES. [2021-10-15 20:21:58,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7009 conditions, 3471 events. 849/3471 cut-off events. For 2861/2861 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 23828 event pairs, 1 based on Foata normal form. 5/3004 useless extension candidates. Maximal degree in co-relation 6978. Up to 390 conditions per place. [2021-10-15 20:21:58,385 INFO L132 encePairwiseOnDemand]: 330/339 looper letters, 19 selfloop transitions, 11 changer transitions 0/187 dead transitions. [2021-10-15 20:21:58,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 187 transitions, 1153 flow [2021-10-15 20:21:58,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 20:21:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 20:21:58,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2254 transitions. [2021-10-15 20:21:58,394 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8311209439528023 [2021-10-15 20:21:58,395 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2254 transitions. [2021-10-15 20:21:58,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2254 transitions. [2021-10-15 20:21:58,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:21:58,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2254 transitions. [2021-10-15 20:21:58,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.75) internal successors, (2254), 8 states have internal predecessors, (2254), 0 states have call successors, (0), 0 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 20:21:58,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 339.0) internal successors, (3051), 9 states have internal predecessors, (3051), 0 states have call successors, (0), 0 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 20:21:58,413 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 339.0) internal successors, (3051), 9 states have internal predecessors, (3051), 0 states have call successors, (0), 0 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 20:21:58,414 INFO L186 Difference]: Start difference. First operand has 131 places, 175 transitions, 1033 flow. Second operand 8 states and 2254 transitions. [2021-10-15 20:21:58,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 187 transitions, 1153 flow [2021-10-15 20:21:58,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 187 transitions, 1145 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-10-15 20:21:58,444 INFO L242 Difference]: Finished difference. Result has 142 places, 183 transitions, 1122 flow [2021-10-15 20:21:58,445 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1122, PETRI_PLACES=142, PETRI_TRANSITIONS=183} [2021-10-15 20:21:58,445 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -81 predicate places. [2021-10-15 20:21:58,445 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 183 transitions, 1122 flow [2021-10-15 20:21:58,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 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 20:21:58,446 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:21:58,447 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, 1, 1, 1, 1, 1, 1] [2021-10-15 20:21:58,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-15 20:21:58,447 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 20:21:58,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:21:58,448 INFO L82 PathProgramCache]: Analyzing trace with hash 523472835, now seen corresponding path program 1 times [2021-10-15 20:21:58,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:21:58,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143821379] [2021-10-15 20:21:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:58,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:21:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:21:58,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:21:58,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143821379] [2021-10-15 20:21:58,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143821379] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:21:58,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091297366] [2021-10-15 20:21:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:21:58,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:21:58,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:21:58,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:21:58,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 20:21:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:21:58,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 20:21:58,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:21:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:21:59,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091297366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:21:59,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:21:59,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-15 20:21:59,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033610926] [2021-10-15 20:21:59,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:21:59,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:21:59,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:21:59,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:21:59,061 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 339 [2021-10-15 20:21:59,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 183 transitions, 1122 flow. Second operand has 6 states, 6 states have (on average 282.8333333333333) internal successors, (1697), 6 states have internal predecessors, (1697), 0 states have call successors, (0), 0 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 20:21:59,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:21:59,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 339 [2021-10-15 20:21:59,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:22:00,214 INFO L129 PetriNetUnfolder]: 1241/5090 cut-off events. [2021-10-15 20:22:00,214 INFO L130 PetriNetUnfolder]: For 7065/7065 co-relation queries the response was YES. [2021-10-15 20:22:00,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11253 conditions, 5090 events. 1241/5090 cut-off events. For 7065/7065 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 35030 event pairs, 1 based on Foata normal form. 56/4469 useless extension candidates. Maximal degree in co-relation 11216. Up to 575 conditions per place. [2021-10-15 20:22:00,281 INFO L132 encePairwiseOnDemand]: 327/339 looper letters, 39 selfloop transitions, 49 changer transitions 0/225 dead transitions. [2021-10-15 20:22:00,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 225 transitions, 1650 flow [2021-10-15 20:22:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:22:00,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 20:22:00,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2590 transitions. [2021-10-15 20:22:00,293 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8489019993444772 [2021-10-15 20:22:00,293 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2590 transitions. [2021-10-15 20:22:00,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2590 transitions. [2021-10-15 20:22:00,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:22:00,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2590 transitions. [2021-10-15 20:22:00,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 287.77777777777777) internal successors, (2590), 9 states have internal predecessors, (2590), 0 states have call successors, (0), 0 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 20:22:00,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 339.0) internal successors, (3390), 10 states have internal predecessors, (3390), 0 states have call successors, (0), 0 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 20:22:00,314 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 339.0) internal successors, (3390), 10 states have internal predecessors, (3390), 0 states have call successors, (0), 0 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 20:22:00,314 INFO L186 Difference]: Start difference. First operand has 142 places, 183 transitions, 1122 flow. Second operand 9 states and 2590 transitions. [2021-10-15 20:22:00,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 225 transitions, 1650 flow [2021-10-15 20:22:00,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 225 transitions, 1647 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:22:00,359 INFO L242 Difference]: Finished difference. Result has 151 places, 209 transitions, 1580 flow [2021-10-15 20:22:00,360 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1580, PETRI_PLACES=151, PETRI_TRANSITIONS=209} [2021-10-15 20:22:00,360 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -72 predicate places. [2021-10-15 20:22:00,360 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 209 transitions, 1580 flow [2021-10-15 20:22:00,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.8333333333333) internal successors, (1697), 6 states have internal predecessors, (1697), 0 states have call successors, (0), 0 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 20:22:00,361 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:22:00,361 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:22:00,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:22:00,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-15 20:22:00,586 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 20:22:00,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:22:00,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1502700669, now seen corresponding path program 2 times [2021-10-15 20:22:00,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:22:00,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296295568] [2021-10-15 20:22:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:22:00,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:22:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:22:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-15 20:22:00,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:22:00,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296295568] [2021-10-15 20:22:00,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296295568] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:22:00,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:22:00,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:22:00,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731529920] [2021-10-15 20:22:00,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:22:00,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:22:00,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:22:00,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:22:00,742 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 339 [2021-10-15 20:22:00,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 209 transitions, 1580 flow. Second operand has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 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 20:22:00,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:22:00,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 339 [2021-10-15 20:22:00,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:22:01,410 INFO L129 PetriNetUnfolder]: 505/2194 cut-off events. [2021-10-15 20:22:01,411 INFO L130 PetriNetUnfolder]: For 3668/3668 co-relation queries the response was YES. [2021-10-15 20:22:01,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4876 conditions, 2194 events. 505/2194 cut-off events. For 3668/3668 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 12484 event pairs, 0 based on Foata normal form. 10/1899 useless extension candidates. Maximal degree in co-relation 4836. Up to 252 conditions per place. [2021-10-15 20:22:01,433 INFO L132 encePairwiseOnDemand]: 331/339 looper letters, 0 selfloop transitions, 0 changer transitions 153/153 dead transitions. [2021-10-15 20:22:01,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 153 transitions, 1174 flow [2021-10-15 20:22:01,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:22:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:22:01,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1390 transitions. [2021-10-15 20:22:01,440 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8200589970501475 [2021-10-15 20:22:01,441 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1390 transitions. [2021-10-15 20:22:01,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1390 transitions. [2021-10-15 20:22:01,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:22:01,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1390 transitions. [2021-10-15 20:22:01,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 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 20:22:01,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 339.0) internal successors, (2034), 6 states have internal predecessors, (2034), 0 states have call successors, (0), 0 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 20:22:01,454 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 339.0) internal successors, (2034), 6 states have internal predecessors, (2034), 0 states have call successors, (0), 0 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 20:22:01,455 INFO L186 Difference]: Start difference. First operand has 151 places, 209 transitions, 1580 flow. Second operand 5 states and 1390 transitions. [2021-10-15 20:22:01,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 153 transitions, 1174 flow [2021-10-15 20:22:01,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 153 transitions, 986 flow, removed 39 selfloop flow, removed 14 redundant places. [2021-10-15 20:22:01,480 INFO L242 Difference]: Finished difference. Result has 127 places, 0 transitions, 0 flow [2021-10-15 20:22:01,481 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=127, PETRI_TRANSITIONS=0} [2021-10-15 20:22:01,481 INFO L334 CegarLoopForPetriNet]: 223 programPoint places, -96 predicate places. [2021-10-15 20:22:01,482 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 0 transitions, 0 flow [2021-10-15 20:22:01,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 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 20:22:01,485 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:22:01,486 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:22:01,486 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:22:01,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-15 20:22:01,493 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:22:01,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:22:01 BoogieIcfgContainer [2021-10-15 20:22:01,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:22:01,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:22:01,506 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:22:01,506 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:22:01,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:21:52" (3/4) ... [2021-10-15 20:22:01,512 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:22:01,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2021-10-15 20:22:01,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-15 20:22:01,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-15 20:22:01,562 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-15 20:22:01,565 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 20:22:01,568 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:22:01,571 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:22:01,797 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:22:01,797 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:22:01,798 INFO L168 Benchmark]: Toolchain (without parser) took 11502.70 ms. Allocated memory was 107.0 MB in the beginning and 371.2 MB in the end (delta: 264.2 MB). Free memory was 66.3 MB in the beginning and 172.3 MB in the end (delta: -106.0 MB). Peak memory consumption was 156.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:22:01,799 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 107.0 MB. Free memory was 83.3 MB in the beginning and 83.3 MB in the end (delta: 63.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:22:01,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.74 ms. Allocated memory is still 107.0 MB. Free memory was 66.1 MB in the beginning and 74.0 MB in the end (delta: -8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:22:01,800 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.74 ms. Allocated memory is still 107.0 MB. Free memory was 74.0 MB in the beginning and 68.1 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:22:01,800 INFO L168 Benchmark]: Boogie Preprocessor took 138.04 ms. Allocated memory is still 107.0 MB. Free memory was 68.1 MB in the beginning and 63.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:22:01,801 INFO L168 Benchmark]: RCFGBuilder took 1569.28 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 63.9 MB in the beginning and 87.0 MB in the end (delta: -23.1 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:22:01,802 INFO L168 Benchmark]: TraceAbstraction took 8852.46 ms. Allocated memory was 144.7 MB in the beginning and 371.2 MB in the end (delta: 226.5 MB). Free memory was 87.0 MB in the beginning and 191.2 MB in the end (delta: -104.2 MB). Peak memory consumption was 123.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:22:01,802 INFO L168 Benchmark]: Witness Printer took 291.36 ms. Allocated memory is still 371.2 MB. Free memory was 191.2 MB in the beginning and 172.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-15 20:22:01,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 107.0 MB. Free memory was 83.3 MB in the beginning and 83.3 MB in the end (delta: 63.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 537.74 ms. Allocated memory is still 107.0 MB. Free memory was 66.1 MB in the beginning and 74.0 MB in the end (delta: -8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.74 ms. Allocated memory is still 107.0 MB. Free memory was 74.0 MB in the beginning and 68.1 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 138.04 ms. Allocated memory is still 107.0 MB. Free memory was 68.1 MB in the beginning and 63.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1569.28 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 63.9 MB in the beginning and 87.0 MB in the end (delta: -23.1 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8852.46 ms. Allocated memory was 144.7 MB in the beginning and 371.2 MB in the end (delta: 226.5 MB). Free memory was 87.0 MB in the beginning and 191.2 MB in the end (delta: -104.2 MB). Peak memory consumption was 123.2 MB. Max. memory is 16.1 GB. * Witness Printer took 291.36 ms. Allocated memory is still 371.2 MB. Free memory was 191.2 MB in the beginning and 172.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 16.8 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: 158]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 158]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 158]: 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, 227 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 9.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8770.0ms, OverallIterations: 14, TraceHistogramMax: 3, EmptinessCheckTime: 0.0ms, AutomataDifference: 5977.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 153.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 176 SDtfs, 300 SDslu, 228 SDs, 0 SdLazy, 442 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 904.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 342.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1580occurred in iteration=13, InterpolantAutomatonStates: 76, 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: 120.1ms SsaConstructionTime, 665.0ms SatisfiabilityAnalysisTime, 1243.8ms InterpolantComputationTime, 619 NumberOfCodeBlocks, 619 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 604 ConstructedInterpolants, 0 QuantifiedInterpolants, 1017 SizeOfPredicates, 3 NumberOfNonLiveVariables, 460 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 117/123 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 20:22:01,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cacdb289-8e24-4c9a-8a35-f8d214775329/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...