./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product38.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_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/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_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product38.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/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_0af2c8c2-f888-4ebd-9817-5139328a3fa0/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 98c7dc32bd1f5d6064904d87261bd79a5c429d94 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:12:16,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:12:16,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:12:16,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:12:16,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:12:16,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:12:16,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:12:16,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:12:16,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:12:16,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:12:16,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:12:16,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:12:16,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:12:16,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:12:16,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:12:16,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:12:16,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:12:16,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:12:16,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:12:16,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:12:16,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:12:16,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:12:16,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:12:16,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:12:16,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:12:16,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:12:16,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:12:16,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:12:16,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:12:16,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:12:16,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:12:16,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:12:16,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:12:16,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:12:16,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:12:16,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:12:16,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:12:16,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:12:16,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:12:16,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:12:16,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:12:16,793 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:12:16,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:12:16,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:12:16,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:12:16,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:12:16,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:12:16,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:12:16,822 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:12:16,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:12:16,822 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:12:16,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:12:16,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:12:16,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:12:16,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:12:16,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:12:16,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:12:16,824 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:12:16,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:12:16,824 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:12:16,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:12:16,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:12:16,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:12:16,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:12:16,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:12:16,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:12:16,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:12:16,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:12:16,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:12:16,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:12:16,826 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:12:16,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:12:16,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:12:16,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:12:16,827 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_0af2c8c2-f888-4ebd-9817-5139328a3fa0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c7dc32bd1f5d6064904d87261bd79a5c429d94 [2021-10-15 20:12:17,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:12:17,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:12:17,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:12:17,137 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:12:17,137 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:12:17,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/product-lines/minepump_spec4_product38.cil.c [2021-10-15 20:12:17,209 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/data/2bcf40b12/06796baa4ae2472f9c86475367a6b9e3/FLAG2a4b5f89f [2021-10-15 20:12:17,734 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:12:17,735 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/sv-benchmarks/c/product-lines/minepump_spec4_product38.cil.c [2021-10-15 20:12:17,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/data/2bcf40b12/06796baa4ae2472f9c86475367a6b9e3/FLAG2a4b5f89f [2021-10-15 20:12:18,213 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/data/2bcf40b12/06796baa4ae2472f9c86475367a6b9e3 [2021-10-15 20:12:18,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:12:18,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:12:18,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:12:18,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:12:18,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:12:18,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:12:18" (1/1) ... [2021-10-15 20:12:18,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57123eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:12:18, skipping insertion in model container [2021-10-15 20:12:18,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:12:18" (1/1) ... [2021-10-15 20:12:18,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:12:18,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:12:18,523 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_0af2c8c2-f888-4ebd-9817-5139328a3fa0/sv-benchmarks/c/product-lines/minepump_spec4_product38.cil.c[4301,4314] [2021-10-15 20:12:18,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:12:18,608 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:12:18,644 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_0af2c8c2-f888-4ebd-9817-5139328a3fa0/sv-benchmarks/c/product-lines/minepump_spec4_product38.cil.c[4301,4314] [2021-10-15 20:12:18,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:12:18,714 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:12:18,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:12:18 WrapperNode [2021-10-15 20:12:18,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:12:18,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:12:18,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:12:18,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:12:18,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:12:18" (1/1) ... [2021-10-15 20:12:18,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:12:18" (1/1) ... [2021-10-15 20:12:18,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:12:18,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:12:18,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:12:18,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:12:18,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:12:18" (1/1) ... [2021-10-15 20:12:18,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:12:18" (1/1) ... [2021-10-15 20:12:18,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:12:18" (1/1) ... [2021-10-15 20:12:18,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:12:18" (1/1) ... [2021-10-15 20:12:18,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:12:18" (1/1) ... [2021-10-15 20:12:18,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:12:18" (1/1) ... [2021-10-15 20:12:18,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:12:18" (1/1) ... [2021-10-15 20:12:18,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:12:18,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:12:18,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:12:18,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:12:18,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:12:18" (1/1) ... [2021-10-15 20:12:18,937 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:12:18,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:12:18,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:12:18,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:12:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:12:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:12:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:12:19,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:12:20,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:12:20,075 INFO L299 CfgBuilder]: Removed 158 assume(true) statements. [2021-10-15 20:12:20,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:12:20 BoogieIcfgContainer [2021-10-15 20:12:20,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:12:20,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:12:20,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:12:20,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:12:20,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:12:18" (1/3) ... [2021-10-15 20:12:20,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d126940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:12:20, skipping insertion in model container [2021-10-15 20:12:20,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:12:18" (2/3) ... [2021-10-15 20:12:20,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d126940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:12:20, skipping insertion in model container [2021-10-15 20:12:20,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:12:20" (3/3) ... [2021-10-15 20:12:20,089 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product38.cil.c [2021-10-15 20:12:20,098 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:12:20,099 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-15 20:12:20,140 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:12:20,147 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 20:12:20,149 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-15 20:12:20,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 111 places, 168 transitions, 336 flow [2021-10-15 20:12:20,221 INFO L129 PetriNetUnfolder]: 58/168 cut-off events. [2021-10-15 20:12:20,222 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:12:20,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 168 events. 58/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 441 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-10-15 20:12:20,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 168 transitions, 336 flow [2021-10-15 20:12:20,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 161 transitions, 322 flow [2021-10-15 20:12:20,246 INFO L129 PetriNetUnfolder]: 20/67 cut-off events. [2021-10-15 20:12:20,248 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:12:20,249 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:20,250 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:20,251 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 20:12:20,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:20,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1302703881, now seen corresponding path program 1 times [2021-10-15 20:12:20,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:20,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25717259] [2021-10-15 20:12:20,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:20,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:20,636 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 20:12:20,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:20,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25717259] [2021-10-15 20:12:20,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25717259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:20,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:20,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:12:20,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028551450] [2021-10-15 20:12:20,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:12:20,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:12:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:12:20,672 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 168 [2021-10-15 20:12:20,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 161 transitions, 322 flow. Second operand has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 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 20:12:20,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:20,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 168 [2021-10-15 20:12:20,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:20,721 INFO L129 PetriNetUnfolder]: 50/156 cut-off events. [2021-10-15 20:12:20,724 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:12:20,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 156 events. 50/156 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 409 event pairs, 0 based on Foata normal form. 4/108 useless extension candidates. Maximal degree in co-relation 156. Up to 8 conditions per place. [2021-10-15 20:12:20,729 INFO L132 encePairwiseOnDemand]: 163/168 looper letters, 0 selfloop transitions, 0 changer transitions 0/156 dead transitions. [2021-10-15 20:12:20,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 156 transitions, 312 flow [2021-10-15 20:12:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:12:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:12:20,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 327 transitions. [2021-10-15 20:12:20,750 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9732142857142857 [2021-10-15 20:12:20,751 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 327 transitions. [2021-10-15 20:12:20,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 327 transitions. [2021-10-15 20:12:20,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:20,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 327 transitions. [2021-10-15 20:12:20,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 163.5) internal successors, (327), 2 states have internal predecessors, (327), 0 states have call successors, (0), 0 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 20:12:20,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 20:12:20,775 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 20:12:20,777 INFO L186 Difference]: Start difference. First operand has 107 places, 161 transitions, 322 flow. Second operand 2 states and 327 transitions. [2021-10-15 20:12:20,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 156 transitions, 312 flow [2021-10-15 20:12:20,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 156 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:12:20,789 INFO L242 Difference]: Finished difference. Result has 108 places, 156 transitions, 312 flow [2021-10-15 20:12:20,791 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=312, PETRI_PLACES=108, PETRI_TRANSITIONS=156} [2021-10-15 20:12:20,792 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 1 predicate places. [2021-10-15 20:12:20,793 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 156 transitions, 312 flow [2021-10-15 20:12:20,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 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 20:12:20,794 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:20,794 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 20:12:20,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:12:20,796 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 20:12:20,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:20,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1945506518, now seen corresponding path program 1 times [2021-10-15 20:12:20,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:20,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879145523] [2021-10-15 20:12:20,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:20,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:20,955 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 20:12:20,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:20,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879145523] [2021-10-15 20:12:20,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879145523] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:20,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:20,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:20,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522822991] [2021-10-15 20:12:20,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:20,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:20,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:20,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:20,967 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 168 [2021-10-15 20:12:20,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 156 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 20:12:20,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:20,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 168 [2021-10-15 20:12:20,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:20,988 INFO L129 PetriNetUnfolder]: 21/65 cut-off events. [2021-10-15 20:12:20,990 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:12:20,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 65 events. 21/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2021-10-15 20:12:20,993 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 1 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2021-10-15 20:12:20,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 134 flow [2021-10-15 20:12:20,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2021-10-15 20:12:20,997 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9464285714285714 [2021-10-15 20:12:20,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2021-10-15 20:12:20,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2021-10-15 20:12:20,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:21,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2021-10-15 20:12:21,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 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 20:12:21,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:12:21,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:12:21,009 INFO L186 Difference]: Start difference. First operand has 108 places, 156 transitions, 312 flow. Second operand 3 states and 477 transitions. [2021-10-15 20:12:21,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 134 flow [2021-10-15 20:12:21,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:12:21,013 INFO L242 Difference]: Finished difference. Result has 48 places, 65 transitions, 132 flow [2021-10-15 20:12:21,013 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=48, PETRI_TRANSITIONS=65} [2021-10-15 20:12:21,020 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -59 predicate places. [2021-10-15 20:12:21,020 INFO L470 AbstractCegarLoop]: Abstraction has has 48 places, 65 transitions, 132 flow [2021-10-15 20:12:21,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 20:12:21,021 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:21,021 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 20:12:21,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:12:21,022 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 20:12:21,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:21,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1939738244, now seen corresponding path program 1 times [2021-10-15 20:12:21,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:21,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488273446] [2021-10-15 20:12:21,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:21,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:21,160 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 20:12:21,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:21,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488273446] [2021-10-15 20:12:21,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488273446] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:21,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:21,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:12:21,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473864110] [2021-10-15 20:12:21,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:12:21,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:21,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:12:21,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:12:21,170 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 168 [2021-10-15 20:12:21,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 65 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 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 20:12:21,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:21,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 168 [2021-10-15 20:12:21,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:21,243 INFO L129 PetriNetUnfolder]: 20/64 cut-off events. [2021-10-15 20:12:21,244 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:12:21,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 64 events. 20/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 72. Up to 7 conditions per place. [2021-10-15 20:12:21,249 INFO L132 encePairwiseOnDemand]: 164/168 looper letters, 4 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2021-10-15 20:12:21,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 144 flow [2021-10-15 20:12:21,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:12:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:12:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 748 transitions. [2021-10-15 20:12:21,253 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8904761904761904 [2021-10-15 20:12:21,253 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 748 transitions. [2021-10-15 20:12:21,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 748 transitions. [2021-10-15 20:12:21,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:21,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 748 transitions. [2021-10-15 20:12:21,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:12:21,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 20:12:21,261 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 20:12:21,261 INFO L186 Difference]: Start difference. First operand has 48 places, 65 transitions, 132 flow. Second operand 5 states and 748 transitions. [2021-10-15 20:12:21,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 144 flow [2021-10-15 20:12:21,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:12:21,268 INFO L242 Difference]: Finished difference. Result has 51 places, 64 transitions, 135 flow [2021-10-15 20:12:21,269 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=51, PETRI_TRANSITIONS=64} [2021-10-15 20:12:21,269 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -56 predicate places. [2021-10-15 20:12:21,269 INFO L470 AbstractCegarLoop]: Abstraction has has 51 places, 64 transitions, 135 flow [2021-10-15 20:12:21,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 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 20:12:21,270 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:21,271 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:21,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 20:12:21,271 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 20:12:21,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:21,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1547834963, now seen corresponding path program 1 times [2021-10-15 20:12:21,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:21,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044459266] [2021-10-15 20:12:21,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:21,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:21,321 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 20:12:21,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:21,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044459266] [2021-10-15 20:12:21,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044459266] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:21,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:21,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:12:21,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888713821] [2021-10-15 20:12:21,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:21,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:21,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:21,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:21,330 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 168 [2021-10-15 20:12:21,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 64 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:12:21,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:21,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 168 [2021-10-15 20:12:21,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:21,380 INFO L129 PetriNetUnfolder]: 26/91 cut-off events. [2021-10-15 20:12:21,380 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:12:21,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 91 events. 26/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 110. Up to 9 conditions per place. [2021-10-15 20:12:21,381 INFO L132 encePairwiseOnDemand]: 158/168 looper letters, 8 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2021-10-15 20:12:21,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 169 flow [2021-10-15 20:12:21,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:21,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2021-10-15 20:12:21,384 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7738095238095238 [2021-10-15 20:12:21,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2021-10-15 20:12:21,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2021-10-15 20:12:21,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:21,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2021-10-15 20:12:21,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 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 20:12:21,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:12:21,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:12:21,389 INFO L186 Difference]: Start difference. First operand has 51 places, 64 transitions, 135 flow. Second operand 3 states and 390 transitions. [2021-10-15 20:12:21,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 169 flow [2021-10-15 20:12:21,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 66 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 20:12:21,392 INFO L242 Difference]: Finished difference. Result has 52 places, 65 transitions, 168 flow [2021-10-15 20:12:21,392 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=52, PETRI_TRANSITIONS=65} [2021-10-15 20:12:21,392 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -55 predicate places. [2021-10-15 20:12:21,393 INFO L470 AbstractCegarLoop]: Abstraction has has 52 places, 65 transitions, 168 flow [2021-10-15 20:12:21,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:12:21,393 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:21,393 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] [2021-10-15 20:12:21,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 20:12:21,394 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 20:12:21,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:21,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1092893503, now seen corresponding path program 1 times [2021-10-15 20:12:21,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:21,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725007523] [2021-10-15 20:12:21,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:21,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:21,471 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 20:12:21,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:21,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725007523] [2021-10-15 20:12:21,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725007523] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:21,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:21,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:12:21,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507039432] [2021-10-15 20:12:21,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:21,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:21,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:21,476 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 168 [2021-10-15 20:12:21,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 65 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 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 20:12:21,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:21,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 168 [2021-10-15 20:12:21,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:21,506 INFO L129 PetriNetUnfolder]: 41/154 cut-off events. [2021-10-15 20:12:21,507 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-10-15 20:12:21,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 154 events. 41/154 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 292 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 200. Up to 16 conditions per place. [2021-10-15 20:12:21,508 INFO L132 encePairwiseOnDemand]: 162/168 looper letters, 11 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2021-10-15 20:12:21,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 204 flow [2021-10-15 20:12:21,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:21,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2021-10-15 20:12:21,511 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8492063492063492 [2021-10-15 20:12:21,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2021-10-15 20:12:21,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2021-10-15 20:12:21,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:21,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2021-10-15 20:12:21,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:12:21,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:12:21,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:12:21,516 INFO L186 Difference]: Start difference. First operand has 52 places, 65 transitions, 168 flow. Second operand 3 states and 428 transitions. [2021-10-15 20:12:21,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 204 flow [2021-10-15 20:12:21,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:12:21,519 INFO L242 Difference]: Finished difference. Result has 53 places, 67 transitions, 177 flow [2021-10-15 20:12:21,519 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=53, PETRI_TRANSITIONS=67} [2021-10-15 20:12:21,519 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -54 predicate places. [2021-10-15 20:12:21,520 INFO L470 AbstractCegarLoop]: Abstraction has has 53 places, 67 transitions, 177 flow [2021-10-15 20:12:21,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 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 20:12:21,520 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:21,520 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] [2021-10-15 20:12:21,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 20:12:21,521 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 20:12:21,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:21,522 INFO L82 PathProgramCache]: Analyzing trace with hash 834728065, now seen corresponding path program 1 times [2021-10-15 20:12:21,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:21,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120600845] [2021-10-15 20:12:21,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:21,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:21,579 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 20:12:21,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:21,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120600845] [2021-10-15 20:12:21,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120600845] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:21,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:21,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:12:21,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606753547] [2021-10-15 20:12:21,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:12:21,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:21,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:12:21,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:12:21,584 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 168 [2021-10-15 20:12:21,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 67 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 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 20:12:21,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:21,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 168 [2021-10-15 20:12:21,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:21,676 INFO L129 PetriNetUnfolder]: 65/231 cut-off events. [2021-10-15 20:12:21,676 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-10-15 20:12:21,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 231 events. 65/231 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 580 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 322. Up to 22 conditions per place. [2021-10-15 20:12:21,680 INFO L132 encePairwiseOnDemand]: 162/168 looper letters, 21 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2021-10-15 20:12:21,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 272 flow [2021-10-15 20:12:21,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:12:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:12:21,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 798 transitions. [2021-10-15 20:12:21,683 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2021-10-15 20:12:21,684 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 798 transitions. [2021-10-15 20:12:21,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 798 transitions. [2021-10-15 20:12:21,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:21,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 798 transitions. [2021-10-15 20:12:21,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 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 20:12:21,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 20:12:21,694 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 20:12:21,694 INFO L186 Difference]: Start difference. First operand has 53 places, 67 transitions, 177 flow. Second operand 6 states and 798 transitions. [2021-10-15 20:12:21,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 272 flow [2021-10-15 20:12:21,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:12:21,698 INFO L242 Difference]: Finished difference. Result has 59 places, 72 transitions, 215 flow [2021-10-15 20:12:21,698 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=59, PETRI_TRANSITIONS=72} [2021-10-15 20:12:21,699 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -48 predicate places. [2021-10-15 20:12:21,699 INFO L470 AbstractCegarLoop]: Abstraction has has 59 places, 72 transitions, 215 flow [2021-10-15 20:12:21,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 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 20:12:21,700 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:21,700 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] [2021-10-15 20:12:21,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 20:12:21,700 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 20:12:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:21,701 INFO L82 PathProgramCache]: Analyzing trace with hash 717533562, now seen corresponding path program 1 times [2021-10-15 20:12:21,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:21,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88282092] [2021-10-15 20:12:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:21,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:21,774 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 20:12:21,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:21,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88282092] [2021-10-15 20:12:21,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88282092] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:21,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:21,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:12:21,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844624372] [2021-10-15 20:12:21,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:12:21,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:21,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:12:21,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:12:21,782 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 168 [2021-10-15 20:12:21,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 72 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 20:12:21,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:21,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 168 [2021-10-15 20:12:21,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:21,870 INFO L129 PetriNetUnfolder]: 137/501 cut-off events. [2021-10-15 20:12:21,870 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2021-10-15 20:12:21,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 501 events. 137/501 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2265 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 709. Up to 45 conditions per place. [2021-10-15 20:12:21,874 INFO L132 encePairwiseOnDemand]: 158/168 looper letters, 10 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2021-10-15 20:12:21,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 275 flow [2021-10-15 20:12:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:12:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:12:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 647 transitions. [2021-10-15 20:12:21,877 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7702380952380953 [2021-10-15 20:12:21,877 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 647 transitions. [2021-10-15 20:12:21,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 647 transitions. [2021-10-15 20:12:21,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:21,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 647 transitions. [2021-10-15 20:12:21,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.4) internal successors, (647), 5 states have internal predecessors, (647), 0 states have call successors, (0), 0 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 20:12:21,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 20:12:21,883 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 20:12:21,883 INFO L186 Difference]: Start difference. First operand has 59 places, 72 transitions, 215 flow. Second operand 5 states and 647 transitions. [2021-10-15 20:12:21,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 275 flow [2021-10-15 20:12:21,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 80 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:12:21,887 INFO L242 Difference]: Finished difference. Result has 65 places, 80 transitions, 283 flow [2021-10-15 20:12:21,888 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=65, PETRI_TRANSITIONS=80} [2021-10-15 20:12:21,888 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -42 predicate places. [2021-10-15 20:12:21,888 INFO L470 AbstractCegarLoop]: Abstraction has has 65 places, 80 transitions, 283 flow [2021-10-15 20:12:21,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 20:12:21,889 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:21,889 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] [2021-10-15 20:12:21,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 20:12:21,889 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 20:12:21,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:21,890 INFO L82 PathProgramCache]: Analyzing trace with hash 459368124, now seen corresponding path program 1 times [2021-10-15 20:12:21,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:21,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004312105] [2021-10-15 20:12:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:21,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:21,933 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 20:12:21,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:21,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004312105] [2021-10-15 20:12:21,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004312105] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:21,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:21,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:21,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414731739] [2021-10-15 20:12:21,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:12:21,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:21,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:12:21,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:12:21,936 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 168 [2021-10-15 20:12:21,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 80 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 20:12:21,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:21,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 168 [2021-10-15 20:12:21,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:22,070 INFO L129 PetriNetUnfolder]: 166/612 cut-off events. [2021-10-15 20:12:22,071 INFO L130 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2021-10-15 20:12:22,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 612 events. 166/612 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2722 event pairs, 0 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 929. Up to 63 conditions per place. [2021-10-15 20:12:22,077 INFO L132 encePairwiseOnDemand]: 160/168 looper letters, 14 selfloop transitions, 8 changer transitions 0/86 dead transitions. [2021-10-15 20:12:22,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 353 flow [2021-10-15 20:12:22,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:12:22,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:12:22,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 569 transitions. [2021-10-15 20:12:22,080 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8467261904761905 [2021-10-15 20:12:22,080 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 569 transitions. [2021-10-15 20:12:22,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 569 transitions. [2021-10-15 20:12:22,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:22,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 569 transitions. [2021-10-15 20:12:22,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 0 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 20:12:22,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 20:12:22,085 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 20:12:22,085 INFO L186 Difference]: Start difference. First operand has 65 places, 80 transitions, 283 flow. Second operand 4 states and 569 transitions. [2021-10-15 20:12:22,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 353 flow [2021-10-15 20:12:22,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 86 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:12:22,093 INFO L242 Difference]: Finished difference. Result has 70 places, 83 transitions, 339 flow [2021-10-15 20:12:22,094 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=339, PETRI_PLACES=70, PETRI_TRANSITIONS=83} [2021-10-15 20:12:22,094 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -37 predicate places. [2021-10-15 20:12:22,094 INFO L470 AbstractCegarLoop]: Abstraction has has 70 places, 83 transitions, 339 flow [2021-10-15 20:12:22,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 20:12:22,095 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:22,095 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] [2021-10-15 20:12:22,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 20:12:22,095 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 20:12:22,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:22,096 INFO L82 PathProgramCache]: Analyzing trace with hash 324506552, now seen corresponding path program 1 times [2021-10-15 20:12:22,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:22,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380462355] [2021-10-15 20:12:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:22,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:22,174 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 20:12:22,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:22,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380462355] [2021-10-15 20:12:22,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380462355] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:22,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:22,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:12:22,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318915879] [2021-10-15 20:12:22,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:12:22,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:22,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:12:22,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:12:22,178 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 168 [2021-10-15 20:12:22,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 83 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 0 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 20:12:22,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:22,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 168 [2021-10-15 20:12:22,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:22,401 INFO L129 PetriNetUnfolder]: 190/701 cut-off events. [2021-10-15 20:12:22,401 INFO L130 PetriNetUnfolder]: For 293/293 co-relation queries the response was YES. [2021-10-15 20:12:22,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 701 events. 190/701 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3158 event pairs, 0 based on Foata normal form. 2/568 useless extension candidates. Maximal degree in co-relation 1186. Up to 82 conditions per place. [2021-10-15 20:12:22,406 INFO L132 encePairwiseOnDemand]: 161/168 looper letters, 24 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2021-10-15 20:12:22,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 97 transitions, 499 flow [2021-10-15 20:12:22,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:12:22,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:12:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 796 transitions. [2021-10-15 20:12:22,410 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7896825396825397 [2021-10-15 20:12:22,411 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 796 transitions. [2021-10-15 20:12:22,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 796 transitions. [2021-10-15 20:12:22,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:22,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 796 transitions. [2021-10-15 20:12:22,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 0 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 20:12:22,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 20:12:22,417 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 20:12:22,417 INFO L186 Difference]: Start difference. First operand has 70 places, 83 transitions, 339 flow. Second operand 6 states and 796 transitions. [2021-10-15 20:12:22,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 97 transitions, 499 flow [2021-10-15 20:12:22,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 495 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:12:22,425 INFO L242 Difference]: Finished difference. Result has 78 places, 93 transitions, 463 flow [2021-10-15 20:12:22,425 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=463, PETRI_PLACES=78, PETRI_TRANSITIONS=93} [2021-10-15 20:12:22,426 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -29 predicate places. [2021-10-15 20:12:22,426 INFO L470 AbstractCegarLoop]: Abstraction has has 78 places, 93 transitions, 463 flow [2021-10-15 20:12:22,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 0 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 20:12:22,427 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:22,427 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] [2021-10-15 20:12:22,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 20:12:22,428 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 20:12:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:22,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1229555098, now seen corresponding path program 1 times [2021-10-15 20:12:22,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:22,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154878787] [2021-10-15 20:12:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:22,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:22,529 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 20:12:22,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:22,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154878787] [2021-10-15 20:12:22,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154878787] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:22,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:22,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:12:22,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561581739] [2021-10-15 20:12:22,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:12:22,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:22,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:12:22,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:12:22,535 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 168 [2021-10-15 20:12:22,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 93 transitions, 463 flow. Second operand has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 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 20:12:22,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:22,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 168 [2021-10-15 20:12:22,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:22,646 INFO L129 PetriNetUnfolder]: 162/642 cut-off events. [2021-10-15 20:12:22,647 INFO L130 PetriNetUnfolder]: For 342/342 co-relation queries the response was YES. [2021-10-15 20:12:22,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1212 conditions, 642 events. 162/642 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2838 event pairs, 0 based on Foata normal form. 8/535 useless extension candidates. Maximal degree in co-relation 1195. Up to 98 conditions per place. [2021-10-15 20:12:22,652 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 20 selfloop transitions, 11 changer transitions 0/101 dead transitions. [2021-10-15 20:12:22,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 101 transitions, 543 flow [2021-10-15 20:12:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:12:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:12:22,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 705 transitions. [2021-10-15 20:12:22,656 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6994047619047619 [2021-10-15 20:12:22,656 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 705 transitions. [2021-10-15 20:12:22,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 705 transitions. [2021-10-15 20:12:22,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:22,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 705 transitions. [2021-10-15 20:12:22,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 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 20:12:22,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 20:12:22,662 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 20:12:22,663 INFO L186 Difference]: Start difference. First operand has 78 places, 93 transitions, 463 flow. Second operand 6 states and 705 transitions. [2021-10-15 20:12:22,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 101 transitions, 543 flow [2021-10-15 20:12:22,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 101 transitions, 535 flow, removed 4 selfloop flow, removed 0 redundant places. [2021-10-15 20:12:22,669 INFO L242 Difference]: Finished difference. Result has 87 places, 101 transitions, 534 flow [2021-10-15 20:12:22,670 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=534, PETRI_PLACES=87, PETRI_TRANSITIONS=101} [2021-10-15 20:12:22,671 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2021-10-15 20:12:22,671 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 101 transitions, 534 flow [2021-10-15 20:12:22,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 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 20:12:22,672 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:22,672 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] [2021-10-15 20:12:22,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 20:12:22,672 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 20:12:22,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:22,674 INFO L82 PathProgramCache]: Analyzing trace with hash 720082008, now seen corresponding path program 1 times [2021-10-15 20:12:22,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:22,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243374103] [2021-10-15 20:12:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:22,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:22,728 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 20:12:22,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:22,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243374103] [2021-10-15 20:12:22,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243374103] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:22,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:22,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:12:22,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674691358] [2021-10-15 20:12:22,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:12:22,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:22,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:12:22,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:12:22,734 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 168 [2021-10-15 20:12:22,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 101 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 20:12:22,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:22,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 168 [2021-10-15 20:12:22,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:22,806 INFO L129 PetriNetUnfolder]: 81/353 cut-off events. [2021-10-15 20:12:22,806 INFO L130 PetriNetUnfolder]: For 244/244 co-relation queries the response was YES. [2021-10-15 20:12:22,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 353 events. 81/353 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1024 event pairs, 0 based on Foata normal form. 6/295 useless extension candidates. Maximal degree in co-relation 721. Up to 36 conditions per place. [2021-10-15 20:12:22,809 INFO L132 encePairwiseOnDemand]: 161/168 looper letters, 15 selfloop transitions, 5 changer transitions 0/94 dead transitions. [2021-10-15 20:12:22,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 94 transitions, 528 flow [2021-10-15 20:12:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:12:22,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:12:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 517 transitions. [2021-10-15 20:12:22,812 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7693452380952381 [2021-10-15 20:12:22,813 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 517 transitions. [2021-10-15 20:12:22,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 517 transitions. [2021-10-15 20:12:22,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:22,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 517 transitions. [2021-10-15 20:12:22,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 20:12:22,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 20:12:22,818 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 20:12:22,818 INFO L186 Difference]: Start difference. First operand has 87 places, 101 transitions, 534 flow. Second operand 4 states and 517 transitions. [2021-10-15 20:12:22,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 94 transitions, 528 flow [2021-10-15 20:12:22,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 94 transitions, 502 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-10-15 20:12:22,824 INFO L242 Difference]: Finished difference. Result has 87 places, 94 transitions, 472 flow [2021-10-15 20:12:22,824 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=472, PETRI_PLACES=87, PETRI_TRANSITIONS=94} [2021-10-15 20:12:22,825 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2021-10-15 20:12:22,825 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 94 transitions, 472 flow [2021-10-15 20:12:22,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 20:12:22,825 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:22,826 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] [2021-10-15 20:12:22,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 20:12:22,826 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 20:12:22,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:22,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1774800916, now seen corresponding path program 1 times [2021-10-15 20:12:22,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:22,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763433456] [2021-10-15 20:12:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:22,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:22,938 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 20:12:22,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:22,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763433456] [2021-10-15 20:12:22,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763433456] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:22,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:22,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:12:22,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342501835] [2021-10-15 20:12:22,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:12:22,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:22,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:12:22,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:12:22,943 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2021-10-15 20:12:22,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 94 transitions, 472 flow. Second operand has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 20:12:22,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:22,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2021-10-15 20:12:22,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:23,172 INFO L129 PetriNetUnfolder]: 261/1180 cut-off events. [2021-10-15 20:12:23,172 INFO L130 PetriNetUnfolder]: For 570/570 co-relation queries the response was YES. [2021-10-15 20:12:23,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2324 conditions, 1180 events. 261/1180 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6767 event pairs, 0 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 2303. Up to 156 conditions per place. [2021-10-15 20:12:23,182 INFO L132 encePairwiseOnDemand]: 159/168 looper letters, 12 selfloop transitions, 17 changer transitions 0/114 dead transitions. [2021-10-15 20:12:23,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 114 transitions, 576 flow [2021-10-15 20:12:23,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 20:12:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 20:12:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1433 transitions. [2021-10-15 20:12:23,188 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8529761904761904 [2021-10-15 20:12:23,188 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1433 transitions. [2021-10-15 20:12:23,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1433 transitions. [2021-10-15 20:12:23,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:23,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1433 transitions. [2021-10-15 20:12:23,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 143.3) internal successors, (1433), 10 states have internal predecessors, (1433), 0 states have call successors, (0), 0 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 20:12:23,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 168.0) internal successors, (1848), 11 states have internal predecessors, (1848), 0 states have call successors, (0), 0 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 20:12:23,200 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 168.0) internal successors, (1848), 11 states have internal predecessors, (1848), 0 states have call successors, (0), 0 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 20:12:23,200 INFO L186 Difference]: Start difference. First operand has 87 places, 94 transitions, 472 flow. Second operand 10 states and 1433 transitions. [2021-10-15 20:12:23,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 114 transitions, 576 flow [2021-10-15 20:12:23,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 114 transitions, 558 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-15 20:12:23,210 INFO L242 Difference]: Finished difference. Result has 101 places, 109 transitions, 578 flow [2021-10-15 20:12:23,210 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=578, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2021-10-15 20:12:23,211 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -6 predicate places. [2021-10-15 20:12:23,211 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 578 flow [2021-10-15 20:12:23,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 20:12:23,212 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:23,212 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:23,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-15 20:12:23,212 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 20:12:23,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:23,213 INFO L82 PathProgramCache]: Analyzing trace with hash 875533316, now seen corresponding path program 1 times [2021-10-15 20:12:23,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:23,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085612852] [2021-10-15 20:12:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:23,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:23,291 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 20:12:23,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:23,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085612852] [2021-10-15 20:12:23,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085612852] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:23,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:23,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:12:23,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885845919] [2021-10-15 20:12:23,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:12:23,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:23,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:12:23,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:12:23,295 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 168 [2021-10-15 20:12:23,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 578 flow. Second operand has 5 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 0 states have call successors, (0), 0 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 20:12:23,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:23,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 168 [2021-10-15 20:12:23,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:23,809 INFO L129 PetriNetUnfolder]: 633/2731 cut-off events. [2021-10-15 20:12:23,809 INFO L130 PetriNetUnfolder]: For 2624/2624 co-relation queries the response was YES. [2021-10-15 20:12:23,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6399 conditions, 2731 events. 633/2731 cut-off events. For 2624/2624 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 18657 event pairs, 12 based on Foata normal form. 0/2291 useless extension candidates. Maximal degree in co-relation 6372. Up to 372 conditions per place. [2021-10-15 20:12:23,837 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 63 selfloop transitions, 31 changer transitions 0/172 dead transitions. [2021-10-15 20:12:23,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 172 transitions, 1136 flow [2021-10-15 20:12:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:12:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 20:12:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1066 transitions. [2021-10-15 20:12:23,842 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.705026455026455 [2021-10-15 20:12:23,842 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1066 transitions. [2021-10-15 20:12:23,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1066 transitions. [2021-10-15 20:12:23,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:23,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1066 transitions. [2021-10-15 20:12:23,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 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 20:12:23,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 168.0) internal successors, (1680), 10 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:12:23,851 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 168.0) internal successors, (1680), 10 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:12:23,851 INFO L186 Difference]: Start difference. First operand has 101 places, 109 transitions, 578 flow. Second operand 9 states and 1066 transitions. [2021-10-15 20:12:23,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 172 transitions, 1136 flow [2021-10-15 20:12:23,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 172 transitions, 1136 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:12:23,873 INFO L242 Difference]: Finished difference. Result has 117 places, 133 transitions, 862 flow [2021-10-15 20:12:23,874 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=862, PETRI_PLACES=117, PETRI_TRANSITIONS=133} [2021-10-15 20:12:23,874 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 10 predicate places. [2021-10-15 20:12:23,874 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 133 transitions, 862 flow [2021-10-15 20:12:23,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 0 states have call successors, (0), 0 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 20:12:23,875 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:23,875 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] [2021-10-15 20:12:23,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-15 20:12:23,876 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 20:12:23,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:23,876 INFO L82 PathProgramCache]: Analyzing trace with hash -337830252, now seen corresponding path program 1 times [2021-10-15 20:12:23,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:23,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493037391] [2021-10-15 20:12:23,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:23,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:23,976 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 20:12:23,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:23,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493037391] [2021-10-15 20:12:23,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493037391] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:12:23,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317006988] [2021-10-15 20:12:23,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:23,978 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:12:23,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:12:23,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:12:24,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 20:12:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:24,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 20:12:24,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:12:24,364 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 20:12:24,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317006988] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:12:24,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:12:24,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-15 20:12:24,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351641046] [2021-10-15 20:12:24,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:12:24,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:24,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:12:24,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:12:24,368 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 168 [2021-10-15 20:12:24,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 133 transitions, 862 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 20:12:24,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:24,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 168 [2021-10-15 20:12:24,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:25,221 INFO L129 PetriNetUnfolder]: 1048/4521 cut-off events. [2021-10-15 20:12:25,222 INFO L130 PetriNetUnfolder]: For 7924/7924 co-relation queries the response was YES. [2021-10-15 20:12:25,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11570 conditions, 4521 events. 1048/4521 cut-off events. For 7924/7924 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 32889 event pairs, 14 based on Foata normal form. 26/3909 useless extension candidates. Maximal degree in co-relation 11535. Up to 624 conditions per place. [2021-10-15 20:12:25,280 INFO L132 encePairwiseOnDemand]: 157/168 looper letters, 28 selfloop transitions, 40 changer transitions 0/162 dead transitions. [2021-10-15 20:12:25,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 162 transitions, 1243 flow [2021-10-15 20:12:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:12:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 20:12:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1199 transitions. [2021-10-15 20:12:25,285 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.792989417989418 [2021-10-15 20:12:25,285 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1199 transitions. [2021-10-15 20:12:25,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1199 transitions. [2021-10-15 20:12:25,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:25,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1199 transitions. [2021-10-15 20:12:25,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.22222222222223) internal successors, (1199), 9 states have internal predecessors, (1199), 0 states have call successors, (0), 0 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 20:12:25,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 168.0) internal successors, (1680), 10 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:12:25,295 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 168.0) internal successors, (1680), 10 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:12:25,295 INFO L186 Difference]: Start difference. First operand has 117 places, 133 transitions, 862 flow. Second operand 9 states and 1199 transitions. [2021-10-15 20:12:25,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 162 transitions, 1243 flow [2021-10-15 20:12:25,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 162 transitions, 1223 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-10-15 20:12:25,338 INFO L242 Difference]: Finished difference. Result has 129 places, 152 transitions, 1192 flow [2021-10-15 20:12:25,338 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1192, PETRI_PLACES=129, PETRI_TRANSITIONS=152} [2021-10-15 20:12:25,339 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 22 predicate places. [2021-10-15 20:12:25,339 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 152 transitions, 1192 flow [2021-10-15 20:12:25,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 20:12:25,340 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:25,340 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-15 20:12:25,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:12:25,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-15 20:12:25,567 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:25,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1076130248, now seen corresponding path program 2 times [2021-10-15 20:12:25,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:25,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384522996] [2021-10-15 20:12:25,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:25,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:12:25,634 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:12:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:12:25,847 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:12:25,849 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:12:25,850 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:12:25,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:12:25,853 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:12:25,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-15 20:12:25,862 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:12:26,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:12:26 BoogieIcfgContainer [2021-10-15 20:12:26,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:12:26,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:12:26,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:12:26,073 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:12:26,073 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:12:20" (3/4) ... [2021-10-15 20:12:26,075 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 20:12:26,233 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:12:26,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:12:26,235 INFO L168 Benchmark]: Toolchain (without parser) took 8013.85 ms. Allocated memory was 104.9 MB in the beginning and 228.6 MB in the end (delta: 123.7 MB). Free memory was 66.2 MB in the beginning and 107.3 MB in the end (delta: -41.1 MB). Peak memory consumption was 81.8 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:26,235 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory was 83.8 MB in the beginning and 83.7 MB in the end (delta: 61.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:12:26,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.27 ms. Allocated memory is still 104.9 MB. Free memory was 66.0 MB in the beginning and 71.5 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:26,236 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.15 ms. Allocated memory is still 104.9 MB. Free memory was 71.5 MB in the beginning and 67.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:26,237 INFO L168 Benchmark]: Boogie Preprocessor took 102.37 ms. Allocated memory is still 104.9 MB. Free memory was 67.9 MB in the beginning and 65.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:26,240 INFO L168 Benchmark]: RCFGBuilder took 1158.88 ms. Allocated memory was 104.9 MB in the beginning and 136.3 MB in the end (delta: 31.5 MB). Free memory was 65.1 MB in the beginning and 96.4 MB in the end (delta: -31.2 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:26,240 INFO L168 Benchmark]: TraceAbstraction took 5990.05 ms. Allocated memory was 136.3 MB in the beginning and 228.6 MB in the end (delta: 92.3 MB). Free memory was 96.4 MB in the beginning and 134.5 MB in the end (delta: -38.1 MB). Peak memory consumption was 93.9 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:26,240 INFO L168 Benchmark]: Witness Printer took 161.04 ms. Allocated memory is still 228.6 MB. Free memory was 134.5 MB in the beginning and 107.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:26,243 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory was 83.8 MB in the beginning and 83.7 MB in the end (delta: 61.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 488.27 ms. Allocated memory is still 104.9 MB. Free memory was 66.0 MB in the beginning and 71.5 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.15 ms. Allocated memory is still 104.9 MB. Free memory was 71.5 MB in the beginning and 67.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.37 ms. Allocated memory is still 104.9 MB. Free memory was 67.9 MB in the beginning and 65.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1158.88 ms. Allocated memory was 104.9 MB in the beginning and 136.3 MB in the end (delta: 31.5 MB). Free memory was 65.1 MB in the beginning and 96.4 MB in the end (delta: -31.2 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5990.05 ms. Allocated memory was 136.3 MB in the beginning and 228.6 MB in the end (delta: 92.3 MB). Free memory was 96.4 MB in the beginning and 134.5 MB in the end (delta: -38.1 MB). Peak memory consumption was 93.9 MB. Max. memory is 16.1 GB. * Witness Printer took 161.04 ms. Allocated memory is still 228.6 MB. Free memory was 134.5 MB in the beginning and 107.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 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 - CounterExampleResult [Line: 257]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L159] int waterLevel = 1; [L160] int methaneLevelCritical = 0; [L359] int pumpRunning = 0; [L360] int systemActive = 1; [L714] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L937] int retValue_acc ; [L940] retValue_acc = 1 [L941] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L291] int splverifierCounter ; [L292] int tmp ; [L293] int tmp___0 ; [L294] int tmp___1 ; [L295] int tmp___2 ; [L298] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L300] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L302] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L308] tmp = __VERIFIER_nondet_int() [L310] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L177] COND TRUE waterLevel < 2 [L178] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L318] tmp___0 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L328] tmp___2 = __VERIFIER_nondet_int() [L330] COND TRUE \read(tmp___2) [L540] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L366] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L373] COND TRUE \read(systemActive) [L421] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L424] COND FALSE !(\read(pumpRunning)) [L395] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L398] COND TRUE ! pumpRunning [L518] int retValue_acc ; [L519] int tmp ; [L520] int tmp___0 ; [L239] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L242] COND FALSE !(waterLevel < 2) [L246] retValue_acc = 0 [L247] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L524] tmp = isHighWaterSensorDry() [L526] COND FALSE !(\read(tmp)) [L529] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L531] retValue_acc = tmp___0 [L532] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L400] tmp = isHighWaterLevel() [L402] COND TRUE \read(tmp) [L449] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L264] int tmp ; [L265] int tmp___0 ; [L230] int retValue_acc ; [L233] retValue_acc = waterLevel [L234] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L269] tmp = getWaterLevel() [L271] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L300] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L302] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L308] tmp = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L318] tmp___0 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L328] tmp___2 = __VERIFIER_nondet_int() [L330] COND TRUE \read(tmp___2) [L540] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L366] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L165] COND TRUE waterLevel > 0 [L166] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L373] COND TRUE \read(systemActive) [L421] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L424] COND TRUE \read(pumpRunning) [L462] int retValue_acc ; [L198] int retValue_acc ; [L201] retValue_acc = methaneLevelCritical [L202] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L466] retValue_acc = isMethaneLevelCritical() [L468] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L426] tmp = isMethaneAlarm() [L428] COND FALSE !(\read(tmp)) [L395] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L398] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L264] int tmp ; [L265] int tmp___0 ; [L230] int retValue_acc ; [L233] retValue_acc = waterLevel [L234] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L269] tmp = getWaterLevel() [L271] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L300] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L302] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L308] tmp = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L318] tmp___0 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L328] tmp___2 = __VERIFIER_nondet_int() [L330] COND TRUE \read(tmp___2) [L540] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L366] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND TRUE waterLevel > 0 [L166] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L373] COND TRUE \read(systemActive) [L421] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L424] COND TRUE \read(pumpRunning) [L462] int retValue_acc ; [L198] int retValue_acc ; [L201] retValue_acc = methaneLevelCritical [L202] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L466] retValue_acc = isMethaneLevelCritical() [L468] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L426] tmp = isMethaneAlarm() [L428] COND FALSE !(\read(tmp)) [L395] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L398] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L264] int tmp ; [L265] int tmp___0 ; [L230] int retValue_acc ; [L233] retValue_acc = waterLevel [L234] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L269] tmp = getWaterLevel() [L271] COND TRUE tmp == 0 [L473] int retValue_acc ; [L476] retValue_acc = pumpRunning [L477] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L273] tmp___0 = isPumpRunning() [L275] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L257] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 257]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 257]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 111 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5722.7ms, OverallIterations: 15, TraceHistogramMax: 3, EmptinessCheckTime: 0.0ms, AutomataDifference: 3095.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 88.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 122 SDtfs, 187 SDslu, 176 SDs, 0 SdLazy, 325 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 453.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 291.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1192occurred in iteration=14, InterpolantAutomatonStates: 75, 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: 107.4ms SsaConstructionTime, 589.9ms SatisfiabilityAnalysisTime, 1027.9ms InterpolantComputationTime, 596 NumberOfCodeBlocks, 596 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 512 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 SizeOfPredicates, 3 NumberOfNonLiveVariables, 420 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 78/84 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-15 20:12:26,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af2c8c2-f888-4ebd-9817-5139328a3fa0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...