./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:34:20,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:34:20,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:34:20,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:34:20,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:34:20,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:34:20,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:34:20,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:34:20,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:34:20,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:34:20,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:34:20,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:34:20,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:34:20,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:34:20,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:34:20,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:34:20,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:34:20,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:34:20,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:34:20,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:34:20,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:34:20,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:34:20,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:34:20,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:34:20,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:34:20,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:34:20,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:34:20,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:34:20,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:34:20,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:34:20,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:34:20,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:34:20,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:34:20,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:34:20,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:34:20,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:34:20,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:34:20,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:34:20,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:34:20,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:34:20,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:34:20,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:34:20,778 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:34:20,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:34:20,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:34:20,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:34:20,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:34:20,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:34:20,782 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:34:20,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:34:20,782 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:34:20,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:34:20,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:34:20,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:34:20,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:34:20,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:34:20,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:34:20,786 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:34:20,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:34:20,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:34:20,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:34:20,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:34:20,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:34:20,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:34:20,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:34:20,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:34:20,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:34:20,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:34:20,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:34:20,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:34:20,789 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:34:20,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:34:20,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:34:20,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:34:20,792 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_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2021-11-09 08:34:21,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:34:21,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:34:21,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:34:21,136 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:34:21,137 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:34:21,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-11-09 08:34:21,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/data/18b246f99/ceeebd34d66f4aeb9e7609974a41a682/FLAG7237304ba [2021-11-09 08:34:21,767 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:34:21,768 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-11-09 08:34:21,779 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/data/18b246f99/ceeebd34d66f4aeb9e7609974a41a682/FLAG7237304ba [2021-11-09 08:34:22,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/data/18b246f99/ceeebd34d66f4aeb9e7609974a41a682 [2021-11-09 08:34:22,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:34:22,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:34:22,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:34:22,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:34:22,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:34:22,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:34:22" (1/1) ... [2021-11-09 08:34:22,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350ad7ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:22, skipping insertion in model container [2021-11-09 08:34:22,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:34:22" (1/1) ... [2021-11-09 08:34:22,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:34:22,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:34:22,458 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_cb0417c6-5715-45ae-bf79-e8dafe735373/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2021-11-09 08:34:22,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:34:22,516 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:34:22,531 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_cb0417c6-5715-45ae-bf79-e8dafe735373/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2021-11-09 08:34:22,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:34:22,606 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:34:22,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:22 WrapperNode [2021-11-09 08:34:22,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:34:22,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:34:22,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:34:22,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:34:22,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:22" (1/1) ... [2021-11-09 08:34:22,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:22" (1/1) ... [2021-11-09 08:34:22,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:34:22,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:34:22,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:34:22,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:34:22,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:22" (1/1) ... [2021-11-09 08:34:22,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:22" (1/1) ... [2021-11-09 08:34:22,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:22" (1/1) ... [2021-11-09 08:34:22,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:22" (1/1) ... [2021-11-09 08:34:22,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:22" (1/1) ... [2021-11-09 08:34:22,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:22" (1/1) ... [2021-11-09 08:34:22,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:22" (1/1) ... [2021-11-09 08:34:22,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:34:22,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:34:22,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:34:22,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:34:22,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:22" (1/1) ... [2021-11-09 08:34:22,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:34:22,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:34:22,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:34:22,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:34:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:34:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:34:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:34:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:34:23,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:34:23,197 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-11-09 08:34:23,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:34:23 BoogieIcfgContainer [2021-11-09 08:34:23,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:34:23,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:34:23,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:34:23,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:34:23,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:34:22" (1/3) ... [2021-11-09 08:34:23,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1657f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:34:23, skipping insertion in model container [2021-11-09 08:34:23,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:22" (2/3) ... [2021-11-09 08:34:23,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1657f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:34:23, skipping insertion in model container [2021-11-09 08:34:23,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:34:23" (3/3) ... [2021-11-09 08:34:23,209 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2021-11-09 08:34:23,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:34:23,216 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:34:23,303 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:34:23,310 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:34:23,310 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:34:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:23,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-09 08:34:23,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:23,341 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:23,342 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:23,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:23,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1243249868, now seen corresponding path program 1 times [2021-11-09 08:34:23,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:23,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856502668] [2021-11-09 08:34:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:23,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:23,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:23,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856502668] [2021-11-09 08:34:23,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856502668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:23,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:23,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:34:23,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465299712] [2021-11-09 08:34:23,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:34:23,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:23,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:34:23,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:34:23,665 INFO L87 Difference]: Start difference. First operand has 72 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:23,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:23,714 INFO L93 Difference]: Finished difference Result 150 states and 251 transitions. [2021-11-09 08:34:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:34:23,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-09 08:34:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:23,729 INFO L225 Difference]: With dead ends: 150 [2021-11-09 08:34:23,730 INFO L226 Difference]: Without dead ends: 68 [2021-11-09 08:34:23,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:34:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-09 08:34:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-11-09 08:34:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.507462686567164) internal successors, (101), 67 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:23,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 101 transitions. [2021-11-09 08:34:23,781 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 101 transitions. Word has length 25 [2021-11-09 08:34:23,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:23,782 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 101 transitions. [2021-11-09 08:34:23,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 101 transitions. [2021-11-09 08:34:23,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-09 08:34:23,785 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:23,785 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:23,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:34:23,786 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:23,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:23,788 INFO L85 PathProgramCache]: Analyzing trace with hash 464393210, now seen corresponding path program 1 times [2021-11-09 08:34:23,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:23,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045507636] [2021-11-09 08:34:23,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:23,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:23,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:23,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045507636] [2021-11-09 08:34:23,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045507636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:23,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:23,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:34:23,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935631291] [2021-11-09 08:34:23,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:34:23,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:23,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:34:23,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:34:23,908 INFO L87 Difference]: Start difference. First operand 68 states and 101 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:23,954 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2021-11-09 08:34:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:34:23,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-09 08:34:23,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:23,957 INFO L225 Difference]: With dead ends: 88 [2021-11-09 08:34:23,957 INFO L226 Difference]: Without dead ends: 68 [2021-11-09 08:34:23,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:34:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-09 08:34:23,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-11-09 08:34:23,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.492537313432836) internal successors, (100), 67 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:23,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2021-11-09 08:34:23,975 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 27 [2021-11-09 08:34:23,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:23,976 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2021-11-09 08:34:23,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:23,976 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2021-11-09 08:34:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-09 08:34:23,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:23,984 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:23,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:34:23,985 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:23,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:23,988 INFO L85 PathProgramCache]: Analyzing trace with hash 722558648, now seen corresponding path program 1 times [2021-11-09 08:34:23,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:23,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495422047] [2021-11-09 08:34:23,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:23,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:24,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:24,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495422047] [2021-11-09 08:34:24,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495422047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:24,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:24,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:34:24,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997622344] [2021-11-09 08:34:24,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:34:24,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:24,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:34:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:34:24,105 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:24,201 INFO L93 Difference]: Finished difference Result 119 states and 172 transitions. [2021-11-09 08:34:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:34:24,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-09 08:34:24,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:24,204 INFO L225 Difference]: With dead ends: 119 [2021-11-09 08:34:24,205 INFO L226 Difference]: Without dead ends: 69 [2021-11-09 08:34:24,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:34:24,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-09 08:34:24,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2021-11-09 08:34:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.453125) internal successors, (93), 64 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2021-11-09 08:34:24,241 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 27 [2021-11-09 08:34:24,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:24,242 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2021-11-09 08:34:24,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2021-11-09 08:34:24,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-09 08:34:24,244 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:24,245 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:34:24,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:34:24,249 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:24,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:24,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1336799219, now seen corresponding path program 1 times [2021-11-09 08:34:24,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:24,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077368212] [2021-11-09 08:34:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:24,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:24,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:24,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077368212] [2021-11-09 08:34:24,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077368212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:24,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:24,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:34:24,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956684774] [2021-11-09 08:34:24,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:34:24,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:24,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:34:24,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:34:24,365 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:24,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:24,419 INFO L93 Difference]: Finished difference Result 129 states and 183 transitions. [2021-11-09 08:34:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:34:24,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-09 08:34:24,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:24,421 INFO L225 Difference]: With dead ends: 129 [2021-11-09 08:34:24,422 INFO L226 Difference]: Without dead ends: 75 [2021-11-09 08:34:24,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:34:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-09 08:34:24,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2021-11-09 08:34:24,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.4225352112676057) internal successors, (101), 71 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2021-11-09 08:34:24,439 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 30 [2021-11-09 08:34:24,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:24,440 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 101 transitions. [2021-11-09 08:34:24,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:24,441 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 101 transitions. [2021-11-09 08:34:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-09 08:34:24,442 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:24,442 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:24,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:34:24,443 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:24,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:24,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1305570860, now seen corresponding path program 1 times [2021-11-09 08:34:24,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:24,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021436081] [2021-11-09 08:34:24,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:24,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:24,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:24,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021436081] [2021-11-09 08:34:24,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021436081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:24,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:24,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:34:24,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352088083] [2021-11-09 08:34:24,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:34:24,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:24,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:34:24,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:34:24,541 INFO L87 Difference]: Start difference. First operand 72 states and 101 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:24,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:24,658 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2021-11-09 08:34:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:34:24,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-09 08:34:24,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:24,660 INFO L225 Difference]: With dead ends: 136 [2021-11-09 08:34:24,661 INFO L226 Difference]: Without dead ends: 73 [2021-11-09 08:34:24,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:34:24,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-09 08:34:24,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2021-11-09 08:34:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.393939393939394) internal successors, (92), 66 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2021-11-09 08:34:24,673 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 32 [2021-11-09 08:34:24,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:24,673 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2021-11-09 08:34:24,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:24,674 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2021-11-09 08:34:24,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-09 08:34:24,675 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:24,675 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 08:34:24,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:34:24,676 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:24,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash 734686790, now seen corresponding path program 1 times [2021-11-09 08:34:24,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:24,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938314871] [2021-11-09 08:34:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:24,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:24,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:24,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938314871] [2021-11-09 08:34:24,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938314871] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:24,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195874192] [2021-11-09 08:34:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:24,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:24,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:34:24,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:34:24,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 08:34:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:24,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:34:24,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:25,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195874192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:25,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:34:25,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-09 08:34:25,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689691756] [2021-11-09 08:34:25,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:34:25,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:25,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:34:25,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:34:25,069 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:25,121 INFO L93 Difference]: Finished difference Result 160 states and 218 transitions. [2021-11-09 08:34:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:34:25,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-09 08:34:25,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:25,124 INFO L225 Difference]: With dead ends: 160 [2021-11-09 08:34:25,125 INFO L226 Difference]: Without dead ends: 103 [2021-11-09 08:34:25,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:34:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-09 08:34:25,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2021-11-09 08:34:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.380281690140845) internal successors, (98), 71 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2021-11-09 08:34:25,155 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 33 [2021-11-09 08:34:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:25,156 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2021-11-09 08:34:25,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:25,156 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2021-11-09 08:34:25,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-09 08:34:25,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:25,158 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 08:34:25,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:25,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:25,384 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:25,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:25,385 INFO L85 PathProgramCache]: Analyzing trace with hash -861199835, now seen corresponding path program 1 times [2021-11-09 08:34:25,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:25,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961373712] [2021-11-09 08:34:25,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:25,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:25,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:25,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961373712] [2021-11-09 08:34:25,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961373712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:25,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141470623] [2021-11-09 08:34:25,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:25,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:25,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:34:25,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:34:25,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 08:34:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:25,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 08:34:25,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 08:34:25,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141470623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:25,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:34:25,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2021-11-09 08:34:25,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297836017] [2021-11-09 08:34:25,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:34:25,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:25,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:34:25,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:34:25,864 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:26,062 INFO L93 Difference]: Finished difference Result 159 states and 215 transitions. [2021-11-09 08:34:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:34:26,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-09 08:34:26,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:26,067 INFO L225 Difference]: With dead ends: 159 [2021-11-09 08:34:26,068 INFO L226 Difference]: Without dead ends: 90 [2021-11-09 08:34:26,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:34:26,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-09 08:34:26,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 62. [2021-11-09 08:34:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 83 transitions. [2021-11-09 08:34:26,100 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 83 transitions. Word has length 35 [2021-11-09 08:34:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:26,101 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 83 transitions. [2021-11-09 08:34:26,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 83 transitions. [2021-11-09 08:34:26,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-09 08:34:26,107 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:26,107 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:26,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:26,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:26,320 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:26,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:26,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1367220671, now seen corresponding path program 1 times [2021-11-09 08:34:26,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:26,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761449562] [2021-11-09 08:34:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:26,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:26,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:26,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761449562] [2021-11-09 08:34:26,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761449562] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:26,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481474130] [2021-11-09 08:34:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:26,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:26,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:34:26,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:34:26,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 08:34:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:26,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 08:34:26,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 08:34:26,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481474130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:26,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:34:26,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2021-11-09 08:34:26,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764707586] [2021-11-09 08:34:26,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:34:26,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:26,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:34:26,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:34:26,659 INFO L87 Difference]: Start difference. First operand 62 states and 83 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:26,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:26,754 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-11-09 08:34:26,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:34:26,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-09 08:34:26,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:26,756 INFO L225 Difference]: With dead ends: 77 [2021-11-09 08:34:26,756 INFO L226 Difference]: Without dead ends: 72 [2021-11-09 08:34:26,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:34:26,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-09 08:34:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2021-11-09 08:34:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3333333333333333) internal successors, (88), 66 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:26,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2021-11-09 08:34:26,764 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 37 [2021-11-09 08:34:26,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:26,764 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2021-11-09 08:34:26,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2021-11-09 08:34:26,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-09 08:34:26,766 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:26,767 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:26,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:26,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:26,988 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:26,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:26,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1369067713, now seen corresponding path program 1 times [2021-11-09 08:34:26,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:26,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843596765] [2021-11-09 08:34:26,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:26,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 08:34:27,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:27,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843596765] [2021-11-09 08:34:27,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843596765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:27,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:27,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:34:27,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804744907] [2021-11-09 08:34:27,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:34:27,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:27,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:34:27,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:34:27,081 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:27,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:27,106 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2021-11-09 08:34:27,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:34:27,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-09 08:34:27,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:27,108 INFO L225 Difference]: With dead ends: 72 [2021-11-09 08:34:27,108 INFO L226 Difference]: Without dead ends: 62 [2021-11-09 08:34:27,108 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:34:27,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-09 08:34:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-09 08:34:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 61 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2021-11-09 08:34:27,114 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 37 [2021-11-09 08:34:27,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:27,114 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2021-11-09 08:34:27,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:27,115 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2021-11-09 08:34:27,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 08:34:27,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:27,116 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:27,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:34:27,117 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:27,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:27,118 INFO L85 PathProgramCache]: Analyzing trace with hash -896100667, now seen corresponding path program 1 times [2021-11-09 08:34:27,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:27,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080032489] [2021-11-09 08:34:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:27,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:27,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:27,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080032489] [2021-11-09 08:34:27,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080032489] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:27,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600693734] [2021-11-09 08:34:27,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:27,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:27,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:34:27,199 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:34:27,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 08:34:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:27,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 08:34:27,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 08:34:27,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600693734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:27,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:34:27,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2021-11-09 08:34:27,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999341519] [2021-11-09 08:34:27,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:34:27,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:27,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:34:27,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:34:27,489 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:27,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:27,686 INFO L93 Difference]: Finished difference Result 91 states and 113 transitions. [2021-11-09 08:34:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:34:27,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-09 08:34:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:27,688 INFO L225 Difference]: With dead ends: 91 [2021-11-09 08:34:27,688 INFO L226 Difference]: Without dead ends: 66 [2021-11-09 08:34:27,688 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:34:27,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-09 08:34:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2021-11-09 08:34:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.278688524590164) internal successors, (78), 61 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:27,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2021-11-09 08:34:27,693 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 38 [2021-11-09 08:34:27,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:27,694 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2021-11-09 08:34:27,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:27,694 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2021-11-09 08:34:27,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-09 08:34:27,703 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:27,703 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:27,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:27,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 08:34:27,904 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:27,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:27,905 INFO L85 PathProgramCache]: Analyzing trace with hash -626672262, now seen corresponding path program 1 times [2021-11-09 08:34:27,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:27,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667908437] [2021-11-09 08:34:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:27,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:27,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:27,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667908437] [2021-11-09 08:34:27,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667908437] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:27,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636001775] [2021-11-09 08:34:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:27,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:27,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:34:27,982 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:34:28,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 08:34:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:28,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 08:34:28,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 08:34:28,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636001775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:28,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:34:28,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2021-11-09 08:34:28,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673148679] [2021-11-09 08:34:28,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:34:28,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:28,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:34:28,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:34:28,358 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:28,535 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2021-11-09 08:34:28,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:34:28,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-09 08:34:28,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:28,537 INFO L225 Difference]: With dead ends: 100 [2021-11-09 08:34:28,537 INFO L226 Difference]: Without dead ends: 64 [2021-11-09 08:34:28,538 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-11-09 08:34:28,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-09 08:34:28,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2021-11-09 08:34:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 61 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2021-11-09 08:34:28,546 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 42 [2021-11-09 08:34:28,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:28,546 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2021-11-09 08:34:28,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:28,547 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2021-11-09 08:34:28,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 08:34:28,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:28,552 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:28,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:28,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:28,764 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:28,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:28,764 INFO L85 PathProgramCache]: Analyzing trace with hash 123088613, now seen corresponding path program 1 times [2021-11-09 08:34:28,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:28,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226724501] [2021-11-09 08:34:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:28,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:28,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:28,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226724501] [2021-11-09 08:34:28,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226724501] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:34:28,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737921299] [2021-11-09 08:34:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:28,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:28,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:34:28,876 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:34:28,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 08:34:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:29,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-09 08:34:29,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 08:34:29,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737921299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:29,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:34:29,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2021-11-09 08:34:29,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522031987] [2021-11-09 08:34:29,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:34:29,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:29,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:34:29,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:34:29,342 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:29,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:29,543 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2021-11-09 08:34:29,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:34:29,543 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-09 08:34:29,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:29,544 INFO L225 Difference]: With dead ends: 65 [2021-11-09 08:34:29,544 INFO L226 Difference]: Without dead ends: 0 [2021-11-09 08:34:29,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:34:29,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-09 08:34:29,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-09 08:34:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-09 08:34:29,546 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2021-11-09 08:34:29,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:29,546 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 08:34:29,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:29,546 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-09 08:34:29,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-09 08:34:29,549 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:34:29,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:29,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:34:29,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-09 08:34:29,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:34:29,894 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 75) no Hoare annotation was computed. [2021-11-09 08:34:29,895 INFO L857 garLoopResultBuilder]: For program point L35-3(lines 35 75) no Hoare annotation was computed. [2021-11-09 08:34:29,895 INFO L853 garLoopResultBuilder]: At program point L217(lines 147 219) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~zero~0 0) (= ULTIMATE.start_mulflt_~__retres10~1 0) (= |ULTIMATE.start_mulflt_#res| 0)) (and (= ULTIMATE.start_main_~tmp~2 1) (= ULTIMATE.start_main_~sa~0 1)) (<= (+ ULTIMATE.start_main_~sa~0 1) 0)) [2021-11-09 08:34:29,895 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-09 08:34:29,895 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 190) no Hoare annotation was computed. [2021-11-09 08:34:29,896 INFO L857 garLoopResultBuilder]: For program point L203(lines 203 208) no Hoare annotation was computed. [2021-11-09 08:34:29,896 INFO L857 garLoopResultBuilder]: For program point L38(lines 37 52) no Hoare annotation was computed. [2021-11-09 08:34:29,896 INFO L857 garLoopResultBuilder]: For program point L38-1(lines 37 52) no Hoare annotation was computed. [2021-11-09 08:34:29,896 INFO L857 garLoopResultBuilder]: For program point L38-2(lines 37 52) no Hoare annotation was computed. [2021-11-09 08:34:29,896 INFO L857 garLoopResultBuilder]: For program point L38-3(lines 37 52) no Hoare annotation was computed. [2021-11-09 08:34:29,897 INFO L853 garLoopResultBuilder]: At program point L73(lines 35 75) the Hoare annotation is: false [2021-11-09 08:34:29,897 INFO L853 garLoopResultBuilder]: At program point L73-1(lines 35 75) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,897 INFO L853 garLoopResultBuilder]: At program point L73-2(lines 35 75) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,897 INFO L853 garLoopResultBuilder]: At program point L73-3(lines 35 75) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,898 INFO L853 garLoopResultBuilder]: At program point L57-2(lines 57 72) the Hoare annotation is: false [2021-11-09 08:34:29,898 INFO L853 garLoopResultBuilder]: At program point L57-5(lines 57 72) the Hoare annotation is: false [2021-11-09 08:34:29,898 INFO L853 garLoopResultBuilder]: At program point L57-8(lines 57 72) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,898 INFO L853 garLoopResultBuilder]: At program point L57-11(lines 57 72) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,898 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-09 08:34:29,899 INFO L857 garLoopResultBuilder]: For program point L256(lines 256 272) no Hoare annotation was computed. [2021-11-09 08:34:29,899 INFO L860 garLoopResultBuilder]: At program point L256-1(lines 256 272) the Hoare annotation is: true [2021-11-09 08:34:29,899 INFO L857 garLoopResultBuilder]: For program point L58(lines 57 72) no Hoare annotation was computed. [2021-11-09 08:34:29,899 INFO L857 garLoopResultBuilder]: For program point L58-1(lines 57 72) no Hoare annotation was computed. [2021-11-09 08:34:29,899 INFO L857 garLoopResultBuilder]: For program point L58-2(lines 57 72) no Hoare annotation was computed. [2021-11-09 08:34:29,900 INFO L857 garLoopResultBuilder]: For program point L58-3(lines 57 72) no Hoare annotation was computed. [2021-11-09 08:34:29,900 INFO L857 garLoopResultBuilder]: For program point L257(lines 257 266) no Hoare annotation was computed. [2021-11-09 08:34:29,900 INFO L857 garLoopResultBuilder]: For program point L257-2(lines 257 266) no Hoare annotation was computed. [2021-11-09 08:34:29,900 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 164) no Hoare annotation was computed. [2021-11-09 08:34:29,900 INFO L857 garLoopResultBuilder]: For program point L158-2(lines 157 218) no Hoare annotation was computed. [2021-11-09 08:34:29,901 INFO L857 garLoopResultBuilder]: For program point L59(lines 57 72) no Hoare annotation was computed. [2021-11-09 08:34:29,901 INFO L857 garLoopResultBuilder]: For program point L59-1(lines 57 72) no Hoare annotation was computed. [2021-11-09 08:34:29,901 INFO L857 garLoopResultBuilder]: For program point L59-2(lines 57 72) no Hoare annotation was computed. [2021-11-09 08:34:29,901 INFO L857 garLoopResultBuilder]: For program point L59-3(lines 57 72) no Hoare annotation was computed. [2021-11-09 08:34:29,901 INFO L860 garLoopResultBuilder]: At program point L274(lines 220 276) the Hoare annotation is: true [2021-11-09 08:34:29,901 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-09 08:34:29,902 INFO L857 garLoopResultBuilder]: For program point L243(lines 243 252) no Hoare annotation was computed. [2021-11-09 08:34:29,902 INFO L857 garLoopResultBuilder]: For program point L243-2(lines 243 252) no Hoare annotation was computed. [2021-11-09 08:34:29,902 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 264) no Hoare annotation was computed. [2021-11-09 08:34:29,902 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 211) no Hoare annotation was computed. [2021-11-09 08:34:29,902 INFO L857 garLoopResultBuilder]: For program point L260-2(lines 260 264) no Hoare annotation was computed. [2021-11-09 08:34:29,903 INFO L857 garLoopResultBuilder]: For program point L194-2(lines 194 211) no Hoare annotation was computed. [2021-11-09 08:34:29,903 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 34) no Hoare annotation was computed. [2021-11-09 08:34:29,903 INFO L857 garLoopResultBuilder]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2021-11-09 08:34:29,903 INFO L857 garLoopResultBuilder]: For program point L29-2(lines 29 34) no Hoare annotation was computed. [2021-11-09 08:34:29,903 INFO L857 garLoopResultBuilder]: For program point L29-3(lines 29 34) no Hoare annotation was computed. [2021-11-09 08:34:29,904 INFO L853 garLoopResultBuilder]: At program point L79(lines 28 81) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~m 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) [2021-11-09 08:34:29,904 INFO L853 garLoopResultBuilder]: At program point L79-1(lines 28 81) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,904 INFO L853 garLoopResultBuilder]: At program point L79-2(lines 28 81) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,904 INFO L853 garLoopResultBuilder]: At program point L79-3(lines 28 81) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,904 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2021-11-09 08:34:29,905 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 184) no Hoare annotation was computed. [2021-11-09 08:34:29,905 INFO L853 garLoopResultBuilder]: At program point L80(lines 24 82) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~m 0) (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) [2021-11-09 08:34:29,905 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 51) no Hoare annotation was computed. [2021-11-09 08:34:29,905 INFO L853 garLoopResultBuilder]: At program point L80-1(lines 24 82) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,906 INFO L853 garLoopResultBuilder]: At program point L47-1(lines 37 52) the Hoare annotation is: false [2021-11-09 08:34:29,906 INFO L853 garLoopResultBuilder]: At program point L80-2(lines 24 82) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,906 INFO L857 garLoopResultBuilder]: For program point L47-2(lines 47 51) no Hoare annotation was computed. [2021-11-09 08:34:29,906 INFO L853 garLoopResultBuilder]: At program point L80-3(lines 24 82) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,906 INFO L853 garLoopResultBuilder]: At program point L47-3(lines 37 52) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,907 INFO L857 garLoopResultBuilder]: For program point L47-4(lines 47 51) no Hoare annotation was computed. [2021-11-09 08:34:29,907 INFO L853 garLoopResultBuilder]: At program point L47-5(lines 37 52) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,907 INFO L857 garLoopResultBuilder]: For program point L47-6(lines 47 51) no Hoare annotation was computed. [2021-11-09 08:34:29,907 INFO L853 garLoopResultBuilder]: At program point L47-7(lines 37 52) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-09 08:34:29,907 INFO L857 garLoopResultBuilder]: For program point L246(lines 246 250) no Hoare annotation was computed. [2021-11-09 08:34:29,908 INFO L857 garLoopResultBuilder]: For program point L246-2(lines 246 250) no Hoare annotation was computed. [2021-11-09 08:34:29,908 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-09 08:34:29,908 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-09 08:34:29,908 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-11-09 08:34:29,909 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-11-09 08:34:29,909 INFO L853 garLoopResultBuilder]: At program point L216(lines 157 218) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~tmp~2 1) (= ULTIMATE.start_main_~sa~0 1)) (and (= ULTIMATE.start_main_~zero~0 0) (= ULTIMATE.start_mulflt_~__retres10~1 0)) (<= (+ ULTIMATE.start_main_~sa~0 1) 0)) [2021-11-09 08:34:29,909 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 75) no Hoare annotation was computed. [2021-11-09 08:34:29,909 INFO L857 garLoopResultBuilder]: For program point L35-1(lines 35 75) no Hoare annotation was computed. [2021-11-09 08:34:29,913 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:29,915 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:34:29,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:34:29 BoogieIcfgContainer [2021-11-09 08:34:29,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:34:29,951 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:34:29,951 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:34:29,952 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:34:29,952 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:34:23" (3/4) ... [2021-11-09 08:34:29,956 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 08:34:29,974 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-09 08:34:29,975 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-09 08:34:29,976 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 08:34:29,976 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 08:34:30,005 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (m == 0 && \result == 0) && __retres4 == 0 [2021-11-09 08:34:30,009 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((zero == 0 && __retres10 == 0) && \result == 0) || (tmp == 1 && sa == 1)) || sa + 1 <= 0 [2021-11-09 08:34:30,064 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 08:34:30,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:34:30,066 INFO L168 Benchmark]: Toolchain (without parser) took 7837.00 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 61.6 MB in the beginning and 81.0 MB in the end (delta: -19.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:34:30,067 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 92.3 MB. Free memory is still 48.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:34:30,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.73 ms. Allocated memory is still 92.3 MB. Free memory was 61.3 MB in the beginning and 65.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:30,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.99 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 63.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:30,068 INFO L168 Benchmark]: Boogie Preprocessor took 38.69 ms. Allocated memory is still 92.3 MB. Free memory was 63.1 MB in the beginning and 61.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:30,069 INFO L168 Benchmark]: RCFGBuilder took 488.29 ms. Allocated memory is still 92.3 MB. Free memory was 61.6 MB in the beginning and 46.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:30,069 INFO L168 Benchmark]: TraceAbstraction took 6748.89 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 45.3 MB in the beginning and 86.2 MB in the end (delta: -40.9 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:30,070 INFO L168 Benchmark]: Witness Printer took 113.78 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 81.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:30,072 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 92.3 MB. Free memory is still 48.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.73 ms. Allocated memory is still 92.3 MB. Free memory was 61.3 MB in the beginning and 65.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.99 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 63.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.69 ms. Allocated memory is still 92.3 MB. Free memory was 63.1 MB in the beginning and 61.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 488.29 ms. Allocated memory is still 92.3 MB. Free memory was 61.6 MB in the beginning and 46.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6748.89 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 45.3 MB in the beginning and 86.2 MB in the end (delta: -40.9 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. * Witness Printer took 113.78 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 81.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 971 SDtfs, 352 SDslu, 2092 SDs, 0 SdLazy, 632 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 306 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 83 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 63 NumberOfFragments, 108 HoareAnnotationTreeSize, 24 FomulaSimplifications, 588 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 24 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 640 NumberOfCodeBlocks, 640 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 622 ConstructedInterpolants, 0 QuantifiedInterpolants, 1121 SizeOfPredicates, 35 NumberOfNonLiveVariables, 961 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 18/37 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: m == 0 && __retres4 == 0 - InvariantResult [Line: 220]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: ((tmp == 1 && sa == 1) || (zero == 0 && __retres10 == 0)) || sa + 1 <= 0 - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: (((zero == 0 && __retres10 == 0) && \result == 0) || (tmp == 1 && sa == 1)) || sa + 1 <= 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (m == 0 && \result == 0) && __retres4 == 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 256]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-09 08:34:30,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0417c6-5715-45ae-bf79-e8dafe735373/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE