./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/Muller_Kahan.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/Muller_Kahan.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN --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 0209c9293388eb915387172d6fa3be69dfb35a1de5258b69ac610130c33e2610 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:42:00,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:42:00,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:42:00,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:42:00,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:42:00,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:42:00,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:42:00,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:42:00,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:42:00,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:42:00,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:42:00,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:42:00,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:42:00,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:42:00,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:42:00,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:42:00,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:42:00,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:42:00,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:42:00,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:42:00,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:42:00,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:42:00,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:42:00,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:42:00,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:42:00,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:42:00,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:42:00,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:42:00,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:42:00,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:42:00,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:42:00,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:42:00,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:42:00,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:42:00,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:42:00,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:42:00,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:42:00,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:42:00,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:42:00,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:42:00,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:42:00,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:42:00,800 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:42:00,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:42:00,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:42:00,802 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:42:00,803 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:42:00,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:42:00,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:42:00,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:42:00,805 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:42:00,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:42:00,807 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:42:00,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:42:00,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:42:00,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:42:00,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:42:00,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:42:00,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:42:00,809 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:42:00,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:42:00,810 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:42:00,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:42:00,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:42:00,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:42:00,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:42:00,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:42:00,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:42:00,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:42:00,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:42:00,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:42:00,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:42:00,814 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:42:00,814 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:42:00,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:42:00,815 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_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0209c9293388eb915387172d6fa3be69dfb35a1de5258b69ac610130c33e2610 [2022-11-20 12:42:01,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:42:01,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:42:01,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:42:01,278 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:42:01,279 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:42:01,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/float-benchs/Muller_Kahan.c.p+cfa-reducer.c [2022-11-20 12:42:05,109 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:42:05,393 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:42:05,394 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/sv-benchmarks/c/float-benchs/Muller_Kahan.c.p+cfa-reducer.c [2022-11-20 12:42:05,405 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/data/d721aebb7/49e75f9db04d4c66a6acd33a420bdfa1/FLAGf121abeb4 [2022-11-20 12:42:05,431 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/data/d721aebb7/49e75f9db04d4c66a6acd33a420bdfa1 [2022-11-20 12:42:05,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:42:05,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:42:05,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:05,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:42:05,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:42:05,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:05" (1/1) ... [2022-11-20 12:42:05,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a880827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05, skipping insertion in model container [2022-11-20 12:42:05,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:05" (1/1) ... [2022-11-20 12:42:05,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:42:05,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:42:05,684 WARN L237 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_ef526af2-88e0-47ba-984f-07db63f24098/sv-benchmarks/c/float-benchs/Muller_Kahan.c.p+cfa-reducer.c[964,977] [2022-11-20 12:42:05,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:05,711 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:42:05,737 WARN L237 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_ef526af2-88e0-47ba-984f-07db63f24098/sv-benchmarks/c/float-benchs/Muller_Kahan.c.p+cfa-reducer.c[964,977] [2022-11-20 12:42:05,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:05,755 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:42:05,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05 WrapperNode [2022-11-20 12:42:05,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:05,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:42:05,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:42:05,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:42:05,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05" (1/1) ... [2022-11-20 12:42:05,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05" (1/1) ... [2022-11-20 12:42:05,789 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-11-20 12:42:05,790 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:42:05,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:42:05,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:42:05,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:42:05,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05" (1/1) ... [2022-11-20 12:42:05,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05" (1/1) ... [2022-11-20 12:42:05,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05" (1/1) ... [2022-11-20 12:42:05,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05" (1/1) ... [2022-11-20 12:42:05,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05" (1/1) ... [2022-11-20 12:42:05,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05" (1/1) ... [2022-11-20 12:42:05,812 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05" (1/1) ... [2022-11-20 12:42:05,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05" (1/1) ... [2022-11-20 12:42:05,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:42:05,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:42:05,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:42:05,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:42:05,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05" (1/1) ... [2022-11-20 12:42:05,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:42:05,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:05,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:42:05,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:42:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:42:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:42:05,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:42:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:42:05,979 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:42:05,982 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:42:06,116 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:42:06,124 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:42:06,124 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:42:06,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:06 BoogieIcfgContainer [2022-11-20 12:42:06,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:42:06,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:42:06,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:42:06,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:42:06,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:42:05" (1/3) ... [2022-11-20 12:42:06,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1386e3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:06, skipping insertion in model container [2022-11-20 12:42:06,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:05" (2/3) ... [2022-11-20 12:42:06,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1386e3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:06, skipping insertion in model container [2022-11-20 12:42:06,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:06" (3/3) ... [2022-11-20 12:42:06,139 INFO L112 eAbstractionObserver]: Analyzing ICFG Muller_Kahan.c.p+cfa-reducer.c [2022-11-20 12:42:06,166 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:42:06,168 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:42:06,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:42:06,257 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@57e3a1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:42:06,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:42:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:42:06,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:06,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:06,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:06,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:06,276 INFO L85 PathProgramCache]: Analyzing trace with hash 207177897, now seen corresponding path program 1 times [2022-11-20 12:42:06,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:06,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765618854] [2022-11-20 12:42:06,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:06,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:06,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:06,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765618854] [2022-11-20 12:42:06,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765618854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:06,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:06,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:06,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015099368] [2022-11-20 12:42:06,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:06,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:06,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:06,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:06,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:06,576 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:06,603 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2022-11-20 12:42:06,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:06,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-20 12:42:06,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:06,617 INFO L225 Difference]: With dead ends: 24 [2022-11-20 12:42:06,618 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 12:42:06,621 INFO L412 NwaCegarLoop]: 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 [2022-11-20 12:42:06,626 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:06,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:42:06,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 12:42:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-20 12:42:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-11-20 12:42:06,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2022-11-20 12:42:06,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:06,661 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-20 12:42:06,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:06,662 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-11-20 12:42:06,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:42:06,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:06,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:06,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:42:06,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:06,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:06,665 INFO L85 PathProgramCache]: Analyzing trace with hash 263819657, now seen corresponding path program 1 times [2022-11-20 12:42:06,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:06,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064304305] [2022-11-20 12:42:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:06,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:06,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:06,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:06,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064304305] [2022-11-20 12:42:06,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064304305] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:42:06,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062295730] [2022-11-20 12:42:06,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:06,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:42:06,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:06,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:42:06,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:42:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:06,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:42:06,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:07,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:07,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062295730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:07,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:42:07,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-20 12:42:07,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191668714] [2022-11-20 12:42:07,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:07,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:42:07,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:07,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:42:07,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:42:07,086 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:07,142 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2022-11-20 12:42:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:42:07,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 9 [2022-11-20 12:42:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:07,144 INFO L225 Difference]: With dead ends: 21 [2022-11-20 12:42:07,144 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 12:42:07,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:42:07,158 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:07,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:42:07,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 12:42:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-20 12:42:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-20 12:42:07,164 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2022-11-20 12:42:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:07,165 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-20 12:42:07,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:07,165 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-20 12:42:07,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:42:07,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:07,166 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:07,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:42:07,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 12:42:07,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:07,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:07,368 INFO L85 PathProgramCache]: Analyzing trace with hash 110395561, now seen corresponding path program 2 times [2022-11-20 12:42:07,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:07,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363248496] [2022-11-20 12:42:07,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:07,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:42:07,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:07,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363248496] [2022-11-20 12:42:07,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363248496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:07,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:07,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:42:07,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698421086] [2022-11-20 12:42:07,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:07,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:42:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:07,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:42:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:42:07,561 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:07,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:07,586 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-11-20 12:42:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:42:07,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 12 [2022-11-20 12:42:07,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:07,587 INFO L225 Difference]: With dead ends: 18 [2022-11-20 12:42:07,588 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 12:42:07,588 INFO L412 NwaCegarLoop]: 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 [2022-11-20 12:42:07,590 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:07,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:42:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 12:42:07,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-20 12:42:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-20 12:42:07,595 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2022-11-20 12:42:07,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:07,596 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-20 12:42:07,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:07,596 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-20 12:42:07,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:42:07,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:07,597 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:07,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:42:07,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:07,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:07,599 INFO L85 PathProgramCache]: Analyzing trace with hash 127406222, now seen corresponding path program 1 times [2022-11-20 12:42:07,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:07,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851370580] [2022-11-20 12:42:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:07,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:07,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:07,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851370580] [2022-11-20 12:42:07,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851370580] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:42:07,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214978075] [2022-11-20 12:42:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:07,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:42:07,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:07,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:42:07,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:42:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:07,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:42:07,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:07,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:07,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214978075] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:07,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:42:07,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-20 12:42:07,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448182182] [2022-11-20 12:42:07,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:07,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:42:07,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:07,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:42:07,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:42:07,919 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:07,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:07,951 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2022-11-20 12:42:07,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:42:07,952 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 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 12 [2022-11-20 12:42:07,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:07,953 INFO L225 Difference]: With dead ends: 27 [2022-11-20 12:42:07,953 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 12:42:07,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:42:07,955 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:07,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:42:07,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 12:42:07,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-20 12:42:07,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:07,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-20 12:42:07,962 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2022-11-20 12:42:07,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:07,963 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-20 12:42:07,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:07,963 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-20 12:42:07,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 12:42:07,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:07,964 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:07,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:08,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:42:08,168 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:08,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:08,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1352950926, now seen corresponding path program 2 times [2022-11-20 12:42:08,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:08,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142616151] [2022-11-20 12:42:08,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:08,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:08,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:08,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142616151] [2022-11-20 12:42:08,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142616151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:42:08,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029639869] [2022-11-20 12:42:08,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:42:08,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:42:08,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:08,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:42:08,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:42:08,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:42:08,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:42:08,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:42:08,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:08,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:09,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029639869] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:09,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:42:09,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-20 12:42:09,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867585543] [2022-11-20 12:42:09,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:09,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 12:42:09,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:09,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 12:42:09,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:42:09,068 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 25 states, 25 states have (on average 1.28) internal successors, (32), 25 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) [2022-11-20 12:42:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:09,126 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2022-11-20 12:42:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:42:09,126 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.28) internal successors, (32), 25 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 18 [2022-11-20 12:42:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:09,127 INFO L225 Difference]: With dead ends: 39 [2022-11-20 12:42:09,127 INFO L226 Difference]: Without dead ends: 32 [2022-11-20 12:42:09,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:42:09,130 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:09,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:42:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-20 12:42:09,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-20 12:42:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 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) [2022-11-20 12:42:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-11-20 12:42:09,138 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 18 [2022-11-20 12:42:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:09,139 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-11-20 12:42:09,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.28) internal successors, (32), 25 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) [2022-11-20 12:42:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-11-20 12:42:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 12:42:09,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:09,140 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:09,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:09,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:42:09,348 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:09,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:09,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1095765134, now seen corresponding path program 3 times [2022-11-20 12:42:09,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:09,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629230736] [2022-11-20 12:42:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:09,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:10,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:10,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629230736] [2022-11-20 12:42:10,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629230736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:42:10,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147488681] [2022-11-20 12:42:10,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:42:10,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:42:10,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:10,188 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:42:10,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:42:10,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-20 12:42:10,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:42:10,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 12:42:10,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:10,416 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:10,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:11,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147488681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:11,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:42:11,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-11-20 12:42:11,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626294636] [2022-11-20 12:42:11,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:11,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-20 12:42:11,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:11,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-20 12:42:11,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 12:42:11,527 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 49 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:11,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:11,661 INFO L93 Difference]: Finished difference Result 63 states and 88 transitions. [2022-11-20 12:42:11,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 12:42:11,662 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2022-11-20 12:42:11,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:11,663 INFO L225 Difference]: With dead ends: 63 [2022-11-20 12:42:11,664 INFO L226 Difference]: Without dead ends: 56 [2022-11-20 12:42:11,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 12:42:11,668 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:11,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:42:11,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-20 12:42:11,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-20 12:42:11,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2022-11-20 12:42:11,693 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 30 [2022-11-20 12:42:11,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:11,694 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2022-11-20 12:42:11,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:11,695 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2022-11-20 12:42:11,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 12:42:11,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:11,696 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:11,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:11,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:42:11,897 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:11,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:11,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1745658738, now seen corresponding path program 4 times [2022-11-20 12:42:11,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:11,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300152589] [2022-11-20 12:42:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:11,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:14,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:14,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300152589] [2022-11-20 12:42:14,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300152589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:42:14,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454689268] [2022-11-20 12:42:14,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:42:14,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:42:14,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:14,241 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:42:14,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:42:14,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:42:14,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:42:14,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 12:42:14,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:14,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:18,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454689268] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:18,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:42:18,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-11-20 12:42:18,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197528529] [2022-11-20 12:42:18,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:18,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-11-20 12:42:18,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:18,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-11-20 12:42:18,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-11-20 12:42:18,650 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 97 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 97 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:18,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:18,935 INFO L93 Difference]: Finished difference Result 111 states and 160 transitions. [2022-11-20 12:42:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-20 12:42:18,936 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 97 states have internal predecessors, (104), 0 states have call successors, (0), 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 54 [2022-11-20 12:42:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:18,942 INFO L225 Difference]: With dead ends: 111 [2022-11-20 12:42:18,943 INFO L226 Difference]: Without dead ends: 104 [2022-11-20 12:42:18,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-11-20 12:42:18,948 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:18,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:42:18,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-20 12:42:18,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-11-20 12:42:18,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:18,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2022-11-20 12:42:18,980 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 54 [2022-11-20 12:42:18,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:18,980 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2022-11-20 12:42:18,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 97 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2022-11-20 12:42:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 12:42:18,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:18,987 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:18,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:19,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:42:19,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:19,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:19,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1919548558, now seen corresponding path program 5 times [2022-11-20 12:42:19,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:19,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61043122] [2022-11-20 12:42:19,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:19,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:26,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:26,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61043122] [2022-11-20 12:42:26,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61043122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:42:26,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602605250] [2022-11-20 12:42:26,958 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:42:26,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:42:26,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:26,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:42:26,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:42:27,309 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2022-11-20 12:42:27,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:42:27,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-20 12:42:27,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:27,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:33,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602605250] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:33,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:42:33,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 103 [2022-11-20 12:42:33,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551731129] [2022-11-20 12:42:33,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:33,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-11-20 12:42:33,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:33,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-11-20 12:42:33,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2022-11-20 12:42:33,265 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 103 states, 103 states have (on average 1.0776699029126213) internal successors, (111), 103 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:33,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:33,540 INFO L93 Difference]: Finished difference Result 117 states and 124 transitions. [2022-11-20 12:42:33,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-11-20 12:42:33,541 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.0776699029126213) internal successors, (111), 103 states have internal predecessors, (111), 0 states have call successors, (0), 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 102 [2022-11-20 12:42:33,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:33,545 INFO L225 Difference]: With dead ends: 117 [2022-11-20 12:42:33,545 INFO L226 Difference]: Without dead ends: 110 [2022-11-20 12:42:33,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 108 SyntacticMatches, 90 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4831 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2022-11-20 12:42:33,551 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:33,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:42:33,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-20 12:42:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-11-20 12:42:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2022-11-20 12:42:33,573 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 102 [2022-11-20 12:42:33,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:33,574 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2022-11-20 12:42:33,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.0776699029126213) internal successors, (111), 103 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:33,574 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2022-11-20 12:42:33,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-20 12:42:33,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:33,584 INFO L195 NwaCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:33,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:33,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:42:33,792 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:33,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:33,792 INFO L85 PathProgramCache]: Analyzing trace with hash -648720242, now seen corresponding path program 6 times [2022-11-20 12:42:33,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:33,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127746957] [2022-11-20 12:42:33,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:33,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:42:33,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:42:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:42:34,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:42:34,085 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:42:34,086 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 12:42:34,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:42:34,092 INFO L444 BasicCegarLoop]: Path program histogram: [6, 2, 1] [2022-11-20 12:42:34,098 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:42:34,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:42:34 BoogieIcfgContainer [2022-11-20 12:42:34,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:42:34,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:42:34,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:42:34,265 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:42:34,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:06" (3/4) ... [2022-11-20 12:42:34,269 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 12:42:34,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:42:34,270 INFO L158 Benchmark]: Toolchain (without parser) took 28834.24ms. Allocated memory was 169.9MB in the beginning and 297.8MB in the end (delta: 127.9MB). Free memory was 123.4MB in the beginning and 254.5MB in the end (delta: -131.1MB). Peak memory consumption was 2.5kB. Max. memory is 16.1GB. [2022-11-20 12:42:34,271 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 121.6MB. Free memory was 90.1MB in the beginning and 90.1MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:42:34,271 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.07ms. Allocated memory is still 169.9MB. Free memory was 123.4MB in the beginning and 113.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:42:34,272 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.19ms. Allocated memory is still 169.9MB. Free memory was 113.0MB in the beginning and 111.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:42:34,272 INFO L158 Benchmark]: Boogie Preprocessor took 24.71ms. Allocated memory is still 169.9MB. Free memory was 111.5MB in the beginning and 110.9MB in the end (delta: 683.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:42:34,273 INFO L158 Benchmark]: RCFGBuilder took 310.10ms. Allocated memory is still 169.9MB. Free memory was 110.9MB in the beginning and 101.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:42:34,273 INFO L158 Benchmark]: TraceAbstraction took 28134.22ms. Allocated memory was 169.9MB in the beginning and 297.8MB in the end (delta: 127.9MB). Free memory was 100.4MB in the beginning and 254.5MB in the end (delta: -154.1MB). Peak memory consumption was 140.5MB. Max. memory is 16.1GB. [2022-11-20 12:42:34,274 INFO L158 Benchmark]: Witness Printer took 5.16ms. Allocated memory is still 297.8MB. Free memory is still 254.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:42:34,277 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 121.6MB. Free memory was 90.1MB in the beginning and 90.1MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.07ms. Allocated memory is still 169.9MB. Free memory was 123.4MB in the beginning and 113.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.19ms. Allocated memory is still 169.9MB. Free memory was 113.0MB in the beginning and 111.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.71ms. Allocated memory is still 169.9MB. Free memory was 111.5MB in the beginning and 110.9MB in the end (delta: 683.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 310.10ms. Allocated memory is still 169.9MB. Free memory was 110.9MB in the beginning and 101.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 28134.22ms. Allocated memory was 169.9MB in the beginning and 297.8MB in the end (delta: 127.9MB). Free memory was 100.4MB in the beginning and 254.5MB in the end (delta: -154.1MB). Peak memory consumption was 140.5MB. Max. memory is 16.1GB. * Witness Printer took 5.16ms. Allocated memory is still 297.8MB. Free memory is still 254.5MB. There was no memory consumed. Max. memory is 16.1GB. * 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 - UnprovableResult [Line: 41]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 19. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L9] double main__x0; [L10] double main__x1; [L11] double main__x2; [L12] int main__i; [L13] main__x0 = 5.5 [L14] main__x1 = 5.545454545454546 [L15] main__i = 0 VAL [__return_main=0, main__i=0, main__x0=11/2, main__x1=2772727272727273/500000000000000] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=1, main__x0=2772727272727273/500000000000000, main__x1=143, main__x2=143] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=2, main__x0=143, main__x1=117, main__x2=117] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=3, main__x0=117, main__x1=115, main__x2=115] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=4, main__x0=115, main__x1=110, main__x2=110] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=5, main__x0=110, main__x1=167, main__x2=167] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=6, main__x0=167, main__x1=198, main__x2=198] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=7, main__x0=198, main__x1=180, main__x2=180] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=8, main__x0=180, main__x1=154, main__x2=154] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=9, main__x0=154, main__x1=118, main__x2=118] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=10, main__x0=118, main__x1=135, main__x2=135] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=11, main__x0=135, main__x1=145, main__x2=145] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=12, main__x0=145, main__x1=161, main__x2=161] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=13, main__x0=161, main__x1=182, main__x2=182] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=14, main__x0=182, main__x1=109, main__x2=109] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=15, main__x0=109, main__x1=157, main__x2=157] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=16, main__x0=157, main__x1=156, main__x2=156] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=17, main__x0=156, main__x1=138, main__x2=138] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=18, main__x0=138, main__x1=136, main__x2=136] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=19, main__x0=136, main__x1=155, main__x2=155] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=20, main__x0=155, main__x1=140, main__x2=140] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=21, main__x0=140, main__x1=124, main__x2=124] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=22, main__x0=124, main__x1=128, main__x2=128] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=23, main__x0=128, main__x1=196, main__x2=196] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=24, main__x0=196, main__x1=144, main__x2=144] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=25, main__x0=144, main__x1=119, main__x2=119] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=26, main__x0=119, main__x1=108, main__x2=108] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=27, main__x0=108, main__x1=111, main__x2=111] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=28, main__x0=111, main__x1=195, main__x2=195] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=29, main__x0=195, main__x1=176, main__x2=176] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=30, main__x0=176, main__x1=146, main__x2=146] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=31, main__x0=146, main__x1=187, main__x2=187] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=32, main__x0=187, main__x1=171, main__x2=171] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=33, main__x0=171, main__x1=168, main__x2=168] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=34, main__x0=168, main__x1=139, main__x2=139] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=35, main__x0=139, main__x1=120, main__x2=120] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=36, main__x0=120, main__x1=185, main__x2=185] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=37, main__x0=185, main__x1=192, main__x2=192] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=38, main__x0=192, main__x1=197, main__x2=197] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=39, main__x0=197, main__x1=159, main__x2=159] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=40, main__x0=159, main__x1=116, main__x2=116] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=41, main__x0=116, main__x1=179, main__x2=179] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=42, main__x0=179, main__x1=162, main__x2=162] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=43, main__x0=162, main__x1=148, main__x2=148] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=44, main__x0=148, main__x1=199, main__x2=199] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=45, main__x0=199, main__x1=106, main__x2=106] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=46, main__x0=106, main__x1=160, main__x2=160] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=47, main__x0=160, main__x1=189, main__x2=189] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=48, main__x0=189, main__x1=125, main__x2=125] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=49, main__x0=125, main__x1=188, main__x2=188] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=50, main__x0=188, main__x1=123, main__x2=123] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=51, main__x0=123, main__x1=130, main__x2=130] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=52, main__x0=130, main__x1=181, main__x2=181] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=53, main__x0=181, main__x1=121, main__x2=121] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=54, main__x0=121, main__x1=165, main__x2=165] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=55, main__x0=165, main__x1=191, main__x2=191] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=56, main__x0=191, main__x1=173, main__x2=173] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=57, main__x0=173, main__x1=151, main__x2=151] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=58, main__x0=151, main__x1=152, main__x2=152] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=59, main__x0=152, main__x1=153, main__x2=153] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=60, main__x0=153, main__x1=170, main__x2=170] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=61, main__x0=170, main__x1=174, main__x2=174] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=62, main__x0=174, main__x1=184, main__x2=184] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=63, main__x0=184, main__x1=127, main__x2=127] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=64, main__x0=127, main__x1=190, main__x2=190] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=65, main__x0=190, main__x1=112, main__x2=112] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=66, main__x0=112, main__x1=193, main__x2=193] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=67, main__x0=193, main__x1=126, main__x2=126] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=68, main__x0=126, main__x1=183, main__x2=183] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=69, main__x0=183, main__x1=107, main__x2=107] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=70, main__x0=107, main__x1=194, main__x2=194] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=71, main__x0=194, main__x1=200, main__x2=200] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=72, main__x0=200, main__x1=169, main__x2=169] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=73, main__x0=169, main__x1=142, main__x2=142] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=74, main__x0=142, main__x1=147, main__x2=147] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=75, main__x0=147, main__x1=149, main__x2=149] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=76, main__x0=149, main__x1=133, main__x2=133] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=77, main__x0=133, main__x1=201, main__x2=201] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=78, main__x0=201, main__x1=202, main__x2=202] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=79, main__x0=202, main__x1=186, main__x2=186] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=80, main__x0=186, main__x1=175, main__x2=175] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=81, main__x0=175, main__x1=166, main__x2=166] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=82, main__x0=166, main__x1=134, main__x2=134] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=83, main__x0=134, main__x1=163, main__x2=163] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=84, main__x0=163, main__x1=164, main__x2=164] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=85, main__x0=164, main__x1=178, main__x2=178] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=86, main__x0=178, main__x1=131, main__x2=131] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=87, main__x0=131, main__x1=114, main__x2=114] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=88, main__x0=114, main__x1=113, main__x2=113] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=89, main__x0=113, main__x1=122, main__x2=122] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=90, main__x0=122, main__x1=132, main__x2=132] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=91, main__x0=132, main__x1=177, main__x2=177] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=92, main__x0=177, main__x1=141, main__x2=141] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=93, main__x0=141, main__x1=105, main__x2=105] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=94, main__x0=105, main__x1=150, main__x2=150] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=95, main__x0=150, main__x1=204, main__x2=204] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=96, main__x0=204, main__x1=158, main__x2=158] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=97, main__x0=158, main__x1=129, main__x2=129] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=98, main__x0=129, main__x1=137, main__x2=137] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=99, main__x0=137, main__x1=203, main__x2=203] [L17] COND TRUE main__i < 100 [L19] main__x2 = 111.0 - ((1130.0 - (3000.0 / main__x0)) / main__x1) [L20] main__x0 = main__x1 [L21] main__x1 = main__x2 [L22] main__i = main__i + 1 VAL [__return_main=0, main__i=100, main__x0=203, main__x1=172, main__x2=172] [L17] COND FALSE !(main__i < 100) [L27] int main____CPAchecker_TMP_0; VAL [__return_main=0, main__i=100, main__x0=203, main__x1=172, main__x2=172] [L28] COND FALSE !(main__x0 >= 99.0) VAL [__return_main=0, main__i=100, main__x0=203, main__x1=172, main__x2=172] [L53] main____CPAchecker_TMP_0 = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=0, main__i=100, main__x0=203, main__x1=172, main__x2=172] [L35] int __tmp_1; [L36] __tmp_1 = main____CPAchecker_TMP_0 [L37] int __VERIFIER_assert__cond; [L38] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=0, main__i=100, main__x0=203, main__x1=172, main__x2=172] [L39] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=0, main__i=100, main__x0=203, main__x1=172, main__x2=172] [L41] reach_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=0, main__i=100, main__x0=203, main__x1=172, main__x2=172] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.9s, OverallIterations: 9, TraceHistogramMax: 100, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 340 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 254 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 326 IncrementalHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 86 mSDtfsCounter, 326 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 641 GetRequests, 265 SyntacticMatches, 90 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5163 ImplicationChecksByTransitivity, 17.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=8, InterpolantAutomatonStates: 295, 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 23.5s InterpolantComputationTime, 578 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 75 NumberOfCheckSat, 675 ConstructedInterpolants, 0 QuantifiedInterpolants, 1779 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1504 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 10/17605 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 12:42:34,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/Muller_Kahan.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN --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 0209c9293388eb915387172d6fa3be69dfb35a1de5258b69ac610130c33e2610 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:42:37,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:42:37,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:42:37,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:42:37,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:42:37,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:42:37,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:42:37,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:42:37,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:42:37,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:42:37,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:42:37,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:42:37,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:42:37,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:42:37,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:42:37,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:42:37,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:42:37,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:42:37,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:42:37,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:42:37,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:42:37,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:42:37,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:42:37,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:42:37,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:42:37,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:42:37,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:42:37,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:42:37,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:42:37,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:42:37,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:42:37,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:42:37,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:42:37,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:42:37,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:42:37,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:42:37,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:42:37,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:42:37,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:42:37,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:42:37,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:42:37,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-20 12:42:37,421 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:42:37,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:42:37,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:42:37,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:42:37,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:42:37,426 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:42:37,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:42:37,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:42:37,428 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:42:37,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:42:37,430 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:42:37,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:42:37,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:42:37,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:42:37,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:42:37,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:42:37,432 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:42:37,432 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:42:37,433 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:42:37,433 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:42:37,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:42:37,434 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:42:37,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:42:37,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:42:37,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:42:37,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:42:37,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:42:37,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:42:37,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:42:37,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:42:37,437 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:42:37,437 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:42:37,438 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:42:37,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:42:37,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:42:37,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:42:37,439 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0209c9293388eb915387172d6fa3be69dfb35a1de5258b69ac610130c33e2610 [2022-11-20 12:42:37,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:42:38,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:42:38,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:42:38,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:42:38,011 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:42:38,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/float-benchs/Muller_Kahan.c.p+cfa-reducer.c [2022-11-20 12:42:42,120 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:42:42,375 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:42:42,376 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/sv-benchmarks/c/float-benchs/Muller_Kahan.c.p+cfa-reducer.c [2022-11-20 12:42:42,383 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/data/e37c3f328/4d0f03bd659b4b23b93b2cd0451458d8/FLAGaf3630d05 [2022-11-20 12:42:42,411 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/data/e37c3f328/4d0f03bd659b4b23b93b2cd0451458d8 [2022-11-20 12:42:42,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:42:42,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:42:42,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:42,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:42:42,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:42:42,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:42" (1/1) ... [2022-11-20 12:42:42,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72889010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42, skipping insertion in model container [2022-11-20 12:42:42,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:42" (1/1) ... [2022-11-20 12:42:42,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:42:42,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:42:42,712 WARN L237 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_ef526af2-88e0-47ba-984f-07db63f24098/sv-benchmarks/c/float-benchs/Muller_Kahan.c.p+cfa-reducer.c[964,977] [2022-11-20 12:42:42,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:42,745 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:42:42,778 WARN L237 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_ef526af2-88e0-47ba-984f-07db63f24098/sv-benchmarks/c/float-benchs/Muller_Kahan.c.p+cfa-reducer.c[964,977] [2022-11-20 12:42:42,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:42,801 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:42:42,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42 WrapperNode [2022-11-20 12:42:42,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:42,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:42:42,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:42:42,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:42:42,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42" (1/1) ... [2022-11-20 12:42:42,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42" (1/1) ... [2022-11-20 12:42:42,850 INFO L138 Inliner]: procedures = 13, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2022-11-20 12:42:42,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:42:42,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:42:42,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:42:42,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:42:42,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42" (1/1) ... [2022-11-20 12:42:42,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42" (1/1) ... [2022-11-20 12:42:42,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42" (1/1) ... [2022-11-20 12:42:42,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42" (1/1) ... [2022-11-20 12:42:42,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42" (1/1) ... [2022-11-20 12:42:42,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42" (1/1) ... [2022-11-20 12:42:42,904 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42" (1/1) ... [2022-11-20 12:42:42,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42" (1/1) ... [2022-11-20 12:42:42,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:42:42,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:42:42,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:42:42,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:42:42,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42" (1/1) ... [2022-11-20 12:42:42,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:42:42,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:42,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:42:42,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:42:43,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:42:43,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:42:43,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:42:43,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:42:43,127 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:42:43,130 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:42:47,183 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:42:47,190 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:42:47,190 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:42:47,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:47 BoogieIcfgContainer [2022-11-20 12:42:47,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:42:47,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:42:47,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:42:47,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:42:47,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:42:42" (1/3) ... [2022-11-20 12:42:47,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3431ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:47, skipping insertion in model container [2022-11-20 12:42:47,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:42" (2/3) ... [2022-11-20 12:42:47,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3431ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:47, skipping insertion in model container [2022-11-20 12:42:47,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:47" (3/3) ... [2022-11-20 12:42:47,206 INFO L112 eAbstractionObserver]: Analyzing ICFG Muller_Kahan.c.p+cfa-reducer.c [2022-11-20 12:42:47,231 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:42:47,231 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:42:47,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:42:47,379 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e22bc0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:42:47,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:42:47,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:47,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:42:47,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:47,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:47,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:47,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash 207177897, now seen corresponding path program 1 times [2022-11-20 12:42:47,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:47,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996167457] [2022-11-20 12:42:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:47,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:47,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:47,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:47,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 12:42:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:47,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:42:47,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:47,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:47,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:47,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:47,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996167457] [2022-11-20 12:42:47,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996167457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:47,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:47,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:47,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974862184] [2022-11-20 12:42:47,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:47,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:47,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:47,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:47,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:47,845 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:52,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:42:53,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:53,121 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2022-11-20 12:42:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:53,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-20 12:42:53,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:53,134 INFO L225 Difference]: With dead ends: 24 [2022-11-20 12:42:53,134 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 12:42:53,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:53,141 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:53,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-20 12:42:53,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 12:42:53,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-20 12:42:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:53,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-11-20 12:42:53,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2022-11-20 12:42:53,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:53,180 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-20 12:42:53,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:53,180 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-11-20 12:42:53,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:42:53,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:53,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:53,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:53,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:53,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:53,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:53,402 INFO L85 PathProgramCache]: Analyzing trace with hash 263819657, now seen corresponding path program 1 times [2022-11-20 12:42:53,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:53,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903560566] [2022-11-20 12:42:53,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:53,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:53,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:53,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:53,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 12:42:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:55,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:42:55,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:55,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:42:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:55,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:42:55,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903560566] [2022-11-20 12:42:55,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903560566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:42:55,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:42:55,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 12:42:55,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682871471] [2022-11-20 12:42:55,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:42:55,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:42:55,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:42:55,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:42:55,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:42:55,965 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:01,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.47s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:03,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:04,434 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2022-11-20 12:43:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:43:04,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 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 9 [2022-11-20 12:43:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:04,436 INFO L225 Difference]: With dead ends: 20 [2022-11-20 12:43:04,436 INFO L226 Difference]: Without dead ends: 13 [2022-11-20 12:43:04,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:43:04,439 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:04,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-11-20 12:43:04,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-20 12:43:04,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-20 12:43:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:04,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-20 12:43:04,452 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2022-11-20 12:43:04,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:04,453 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-20 12:43:04,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:04,454 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-20 12:43:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 12:43:04,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:04,455 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:04,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:04,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:04,656 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:04,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:04,657 INFO L85 PathProgramCache]: Analyzing trace with hash 617870729, now seen corresponding path program 2 times [2022-11-20 12:43:04,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:04,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409147287] [2022-11-20 12:43:04,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:43:04,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:04,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:04,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:04,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 12:43:04,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:43:04,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:43:04,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:43:04,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:43:04,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:04,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:04,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409147287] [2022-11-20 12:43:04,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409147287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:04,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:04,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:43:04,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337654187] [2022-11-20 12:43:04,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:04,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:43:04,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:04,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:43:04,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:43:04,965 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:05,227 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-11-20 12:43:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:43:05,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 11 [2022-11-20 12:43:05,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:05,229 INFO L225 Difference]: With dead ends: 17 [2022-11-20 12:43:05,229 INFO L226 Difference]: Without dead ends: 13 [2022-11-20 12:43:05,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:43:05,232 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:05,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:43:05,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-20 12:43:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-20 12:43:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-20 12:43:05,239 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2022-11-20 12:43:05,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:05,240 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-20 12:43:05,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:05,240 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-20 12:43:05,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 12:43:05,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:05,241 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:05,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:05,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:05,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:05,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:05,444 INFO L85 PathProgramCache]: Analyzing trace with hash 634881390, now seen corresponding path program 1 times [2022-11-20 12:43:05,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:05,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88741808] [2022-11-20 12:43:05,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:05,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:05,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:05,447 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:05,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 12:43:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:11,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:43:11,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:12,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:13,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:13,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88741808] [2022-11-20 12:43:13,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88741808] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:13,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:13,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 12:43:13,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356960928] [2022-11-20 12:43:13,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:13,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:43:13,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:13,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:43:13,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:43:13,525 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:19,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:21,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:23,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:25,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:26,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:26,857 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2022-11-20 12:43:26,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:43:26,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 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 11 [2022-11-20 12:43:26,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:26,859 INFO L225 Difference]: With dead ends: 24 [2022-11-20 12:43:26,860 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 12:43:26,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:43:26,862 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:26,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 4 Unknown, 0 Unchecked, 11.8s Time] [2022-11-20 12:43:26,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 12:43:26,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-20 12:43:26,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-11-20 12:43:26,869 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2022-11-20 12:43:26,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:26,870 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-11-20 12:43:26,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:26,870 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-11-20 12:43:26,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 12:43:26,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:26,871 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:26,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-20 12:43:27,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:27,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:27,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:27,083 INFO L85 PathProgramCache]: Analyzing trace with hash -684634770, now seen corresponding path program 2 times [2022-11-20 12:43:27,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:27,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039645693] [2022-11-20 12:43:27,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:43:27,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:27,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:27,088 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:43:27,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 12:43:41,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:43:41,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:43:41,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:43:41,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:43,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:46,597 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:46,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:46,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039645693] [2022-11-20 12:43:46,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039645693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:46,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:46,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-20 12:43:46,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753853124] [2022-11-20 12:43:46,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:46,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:43:46,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:46,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:43:46,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:43:46,601 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:52,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:54,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:56,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:58,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:00,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:02,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:04,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:06,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:10,573 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2022-11-20 12:44:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:44:10,574 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 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 15 [2022-11-20 12:44:10,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:10,575 INFO L225 Difference]: With dead ends: 32 [2022-11-20 12:44:10,576 INFO L226 Difference]: Without dead ends: 25 [2022-11-20 12:44:10,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=199, Invalid=353, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:44:10,578 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:10,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 8 Unknown, 0 Unchecked, 20.0s Time] [2022-11-20 12:44:10,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-20 12:44:10,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-20 12:44:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-11-20 12:44:10,587 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 15 [2022-11-20 12:44:10,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:10,588 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-11-20 12:44:10,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:10,588 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-11-20 12:44:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 12:44:10,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:10,590 INFO L195 NwaCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:10,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:10,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:10,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:10,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:10,792 INFO L85 PathProgramCache]: Analyzing trace with hash -176628370, now seen corresponding path program 3 times [2022-11-20 12:44:10,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:10,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380682006] [2022-11-20 12:44:10,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:44:10,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:10,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:10,795 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:44:10,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 12:47:18,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-20 12:47:18,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:47:19,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:47:19,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:25,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:35,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:47:35,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380682006] [2022-11-20 12:47:35,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380682006] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:47:35,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:47:35,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-11-20 12:47:35,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069993556] [2022-11-20 12:47:35,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:47:35,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 12:47:35,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:47:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 12:47:35,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:47:35,836 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 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) [2022-11-20 12:47:41,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:43,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:45,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:47,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:49,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:51,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:53,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:55,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:57,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:59,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:01,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:03,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:05,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:07,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:09,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:11,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:24,761 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2022-11-20 12:48:24,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 12:48:24,762 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 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 23 [2022-11-20 12:48:24,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:24,763 INFO L225 Difference]: With dead ends: 48 [2022-11-20 12:48:24,764 INFO L226 Difference]: Without dead ends: 41 [2022-11-20 12:48:24,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=783, Invalid=1473, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 12:48:24,766 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 15 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:24,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 31 Invalid, 16 Unknown, 0 Unchecked, 36.1s Time] [2022-11-20 12:48:24,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-20 12:48:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-20 12:48:24,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:24,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-11-20 12:48:24,779 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 23 [2022-11-20 12:48:24,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:24,779 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-11-20 12:48:24,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 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) [2022-11-20 12:48:24,780 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-11-20 12:48:24,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 12:48:24,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:24,781 INFO L195 NwaCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:24,995 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forcibly destroying the process [2022-11-20 12:48:25,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:25,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:48:25,102 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:48:25,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1739063954, now seen corresponding path program 4 times [2022-11-20 12:48:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:48:25,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429932830] [2022-11-20 12:48:25,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:48:25,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:48:25,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:48:25,114 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:48:25,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 12:49:25,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:49:25,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:49:28,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 12:49:28,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:49:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:49:49,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:50:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:30,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:50:30,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429932830] [2022-11-20 12:50:30,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429932830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:50:30,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:50:30,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2022-11-20 12:50:30,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153110926] [2022-11-20 12:50:30,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:50:30,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-20 12:50:30,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:50:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-20 12:50:30,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2022-11-20 12:50:30,575 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:36,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:38,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:40,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:42,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:44,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:46,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:48,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:50,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:52,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:54,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:56,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:58,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:00,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:02,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:04,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:06,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:08,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:10,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:12,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:14,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:16,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:18,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:20,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:22,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:24,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:26,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:29,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:31,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:33,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:35,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:37,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:39,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:52:34,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:34,791 INFO L93 Difference]: Finished difference Result 80 states and 113 transitions. [2022-11-20 12:52:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-20 12:52:34,792 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 0 states have call successors, (0), 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 39 [2022-11-20 12:52:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:34,794 INFO L225 Difference]: With dead ends: 80 [2022-11-20 12:52:34,794 INFO L226 Difference]: Without dead ends: 73 [2022-11-20 12:52:34,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 114.5s TimeCoverageRelationStatistics Valid=3103, Invalid=6017, Unknown=0, NotChecked=0, Total=9120 [2022-11-20 12:52:34,798 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 31 mSolverCounterUnsat, 32 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 32 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:34,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 266 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 63 Invalid, 32 Unknown, 0 Unchecked, 69.1s Time] [2022-11-20 12:52:34,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-20 12:52:34,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-20 12:52:34,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:34,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-11-20 12:52:34,816 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 39 [2022-11-20 12:52:34,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:34,817 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-11-20 12:52:34,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:34,817 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-11-20 12:52:34,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 12:52:34,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:34,820 INFO L195 NwaCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:35,035 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forcibly destroying the process [2022-11-20 12:52:35,237 FATAL L548 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Could not destroy process within 200 ms, abandoning it [2022-11-20 12:52:35,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:35,238 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:52:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:35,239 INFO L85 PathProgramCache]: Analyzing trace with hash 928398702, now seen corresponding path program 5 times [2022-11-20 12:52:35,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:35,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755241496] [2022-11-20 12:52:35,241 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:52:35,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:52:35,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:35,248 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:52:35,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef526af2-88e0-47ba-984f-07db63f24098/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process