./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/drift_tenth.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/drift_tenth.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G --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 cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:48:15,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:48:15,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:48:15,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:48:15,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:48:15,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:48:15,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:48:15,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:48:15,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:48:15,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:48:15,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:48:15,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:48:15,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:48:15,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:48:15,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:48:15,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:48:15,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:48:15,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:48:15,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:48:15,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:48:15,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:48:15,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:48:15,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:48:15,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:48:15,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:48:15,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:48:15,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:48:15,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:48:15,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:48:15,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:48:15,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:48:15,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:48:15,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:48:15,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:48:15,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:48:15,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:48:15,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:48:15,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:48:15,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:48:15,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:48:15,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:48:15,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:48:15,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:48:15,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:48:15,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:48:15,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:48:15,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:48:15,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:48:15,943 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:48:15,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:48:15,944 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:48:15,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:48:15,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:48:15,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:48:15,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:48:15,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:48:15,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:48:15,946 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:48:15,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:48:15,946 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:48:15,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:48:15,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:48:15,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:48:15,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:48:15,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:48:15,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:48:15,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:48:15,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:48:15,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:48:15,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:48:15,949 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:48:15,949 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:48:15,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:48:15,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:48:15,950 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_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 [2021-11-23 12:48:16,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:48:16,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:48:16,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:48:16,300 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:48:16,301 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:48:16,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/float-benchs/drift_tenth.c [2021-11-23 12:48:16,395 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/data/b1c2a21ed/17c821ae625d4b09b4276862e65b142d/FLAG8333d6bd6 [2021-11-23 12:48:16,882 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:48:16,885 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/sv-benchmarks/c/float-benchs/drift_tenth.c [2021-11-23 12:48:16,900 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/data/b1c2a21ed/17c821ae625d4b09b4276862e65b142d/FLAG8333d6bd6 [2021-11-23 12:48:17,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/data/b1c2a21ed/17c821ae625d4b09b4276862e65b142d [2021-11-23 12:48:17,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:48:17,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:48:17,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:48:17,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:48:17,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:48:17,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:48:17" (1/1) ... [2021-11-23 12:48:17,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486055d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:17, skipping insertion in model container [2021-11-23 12:48:17,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:48:17" (1/1) ... [2021-11-23 12:48:17,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:48:17,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:48:17,446 WARN L230 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_6f12c75c-b3a9-4133-bc44-c62446a54744/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2021-11-23 12:48:17,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:48:17,478 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:48:17,503 WARN L230 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_6f12c75c-b3a9-4133-bc44-c62446a54744/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2021-11-23 12:48:17,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:48:17,521 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:48:17,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:17 WrapperNode [2021-11-23 12:48:17,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:48:17,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:48:17,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:48:17,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:48:17,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:17" (1/1) ... [2021-11-23 12:48:17,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:17" (1/1) ... [2021-11-23 12:48:17,581 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2021-11-23 12:48:17,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:48:17,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:48:17,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:48:17,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:48:17,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:17" (1/1) ... [2021-11-23 12:48:17,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:17" (1/1) ... [2021-11-23 12:48:17,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:17" (1/1) ... [2021-11-23 12:48:17,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:17" (1/1) ... [2021-11-23 12:48:17,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:17" (1/1) ... [2021-11-23 12:48:17,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:17" (1/1) ... [2021-11-23 12:48:17,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:17" (1/1) ... [2021-11-23 12:48:17,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:48:17,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:48:17,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:48:17,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:48:17,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:17" (1/1) ... [2021-11-23 12:48:17,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:48:17,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:48:17,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:48:17,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:48:17,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:48:17,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:48:17,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:48:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:48:17,780 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:48:17,782 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:48:17,916 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:48:17,925 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:48:17,925 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 12:48:17,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:48:17 BoogieIcfgContainer [2021-11-23 12:48:17,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:48:17,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:48:17,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:48:17,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:48:17,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:48:17" (1/3) ... [2021-11-23 12:48:17,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ef2c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:48:17, skipping insertion in model container [2021-11-23 12:48:17,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:17" (2/3) ... [2021-11-23 12:48:17,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ef2c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:48:17, skipping insertion in model container [2021-11-23 12:48:17,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:48:17" (3/3) ... [2021-11-23 12:48:17,951 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2021-11-23 12:48:17,959 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:48:17,959 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:48:18,024 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:48:18,036 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:48:18,036 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:48:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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) [2021-11-23 12:48:18,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 12:48:18,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:48:18,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 12:48:18,057 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:48:18,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:48:18,063 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-11-23 12:48:18,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:48:18,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604502225] [2021-11-23 12:48:18,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:48:18,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:48:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:48:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:18,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:48:18,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604502225] [2021-11-23 12:48:18,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604502225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:48:18,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:48:18,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:48:18,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619886260] [2021-11-23 12:48:18,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:48:18,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:48:18,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:48:18,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:48:18,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:48:18,333 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:48:18,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:48:18,384 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-11-23 12:48:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:48:18,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-11-23 12:48:18,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:48:18,394 INFO L225 Difference]: With dead ends: 22 [2021-11-23 12:48:18,394 INFO L226 Difference]: Without dead ends: 10 [2021-11-23 12:48:18,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:48:18,401 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:48:18,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:48:18,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-23 12:48:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-11-23 12:48:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2021-11-23 12:48:18,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-23 12:48:18,433 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-11-23 12:48:18,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:48:18,434 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-23 12:48:18,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:48:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-23 12:48:18,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 12:48:18,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:48:18,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:48:18,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:48:18,436 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:48:18,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:48:18,437 INFO L85 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2021-11-23 12:48:18,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:48:18,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131962305] [2021-11-23 12:48:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:48:18,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:48:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:48:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:18,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:48:18,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131962305] [2021-11-23 12:48:18,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131962305] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:48:18,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833732824] [2021-11-23 12:48:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:48:18,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:48:18,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:48:18,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:48:18,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:48:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:48:18,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:48:18,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:48:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:18,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:48:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:18,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833732824] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:48:18,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:48:18,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 12:48:18,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590195494] [2021-11-23 12:48:18,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:48:18,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:48:18,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:48:18,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:48:18,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:48:18,723 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2021-11-23 12:48:18,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:48:18,759 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-23 12:48:18,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:48:18,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) Word has length 8 [2021-11-23 12:48:18,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:48:18,761 INFO L225 Difference]: With dead ends: 19 [2021-11-23 12:48:18,761 INFO L226 Difference]: Without dead ends: 15 [2021-11-23 12:48:18,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:48:18,765 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:48:18,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:48:18,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-23 12:48:18,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-23 12:48:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 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) [2021-11-23 12:48:18,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-23 12:48:18,780 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-11-23 12:48:18,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:48:18,781 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-23 12:48:18,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2021-11-23 12:48:18,782 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-23 12:48:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 12:48:18,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:48:18,789 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2021-11-23 12:48:18,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:48:19,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:48:19,016 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:48:19,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:48:19,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1745754443, now seen corresponding path program 2 times [2021-11-23 12:48:19,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:48:19,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577057334] [2021-11-23 12:48:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:48:19,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:48:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:48:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:19,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:48:19,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577057334] [2021-11-23 12:48:19,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577057334] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:48:19,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717265926] [2021-11-23 12:48:19,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:48:19,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:48:19,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:48:19,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:48:19,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:48:19,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:48:19,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:48:19,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 12:48:19,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:48:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:19,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:48:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:19,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717265926] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:48:19,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:48:19,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-23 12:48:19,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696000948] [2021-11-23 12:48:19,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:48:19,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:48:19,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:48:19,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:48:19,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:48:19,382 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:48:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:48:19,441 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-11-23 12:48:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 12:48:19,442 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 12:48:19,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:48:19,443 INFO L225 Difference]: With dead ends: 31 [2021-11-23 12:48:19,443 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 12:48:19,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:48:19,445 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:48:19,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:48:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 12:48:19,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-23 12:48:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:48:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-11-23 12:48:19,452 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2021-11-23 12:48:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:48:19,452 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-11-23 12:48:19,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:48:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-11-23 12:48:19,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 12:48:19,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:48:19,454 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2021-11-23 12:48:19,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:48:19,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-23 12:48:19,678 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:48:19,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:48:19,679 INFO L85 PathProgramCache]: Analyzing trace with hash -95702975, now seen corresponding path program 3 times [2021-11-23 12:48:19,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:48:19,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116536527] [2021-11-23 12:48:19,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:48:19,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:48:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:48:19,701 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:48:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:48:19,735 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:48:19,736 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 12:48:19,736 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 12:48:19,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:48:19,741 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1] [2021-11-23 12:48:19,744 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:48:19,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:48:19 BoogieIcfgContainer [2021-11-23 12:48:19,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:48:19,769 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:48:19,769 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:48:19,769 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:48:19,770 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:48:17" (3/4) ... [2021-11-23 12:48:19,773 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 12:48:19,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:48:19,774 INFO L158 Benchmark]: Toolchain (without parser) took 2524.42ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 61.2MB in the beginning and 83.0MB in the end (delta: -21.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:48:19,774 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory was 69.0MB in the beginning and 69.0MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:48:19,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.72ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 61.2MB in the beginning and 92.4MB in the end (delta: -31.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:48:19,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.76ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 91.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:48:19,775 INFO L158 Benchmark]: Boogie Preprocessor took 30.37ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 90.3MB in the end (delta: 698.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:48:19,776 INFO L158 Benchmark]: RCFGBuilder took 312.72ms. Allocated memory is still 117.4MB. Free memory was 90.3MB in the beginning and 81.1MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 12:48:19,776 INFO L158 Benchmark]: TraceAbstraction took 1839.32ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 83.0MB in the end (delta: -2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:48:19,777 INFO L158 Benchmark]: Witness Printer took 4.02ms. Allocated memory is still 117.4MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:48:19,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory was 69.0MB in the beginning and 69.0MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.72ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 61.2MB in the beginning and 92.4MB in the end (delta: -31.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.76ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 91.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.37ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 90.3MB in the end (delta: 698.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 312.72ms. Allocated memory is still 117.4MB. Free memory was 90.3MB in the beginning and 81.1MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1839.32ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 83.0MB in the end (delta: -2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.02ms. Allocated memory is still 117.4MB. Free memory is still 83.0MB. 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: 6]: 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 17, overapproximation of someBinaryArithmeticFLOAToperation at line 15. Possible FailurePath: [L10] float tick = 1.f / 10.f; [L11] float time = 0.f; [L12] int i; [L14] i = 0 VAL [i=0, time=0] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=0] [L14] i++ VAL [i=1] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=1] [L14] i++ VAL [i=2] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=2] [L14] i++ VAL [i=3] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=3] [L14] i++ VAL [i=4] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=4] [L14] i++ VAL [i=5] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=5] [L14] i++ VAL [i=6] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=6] [L14] i++ VAL [i=7] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=7] [L14] i++ VAL [i=8] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=8] [L14] i++ VAL [i=9] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=9] [L14] i++ VAL [i=10] [L14] COND FALSE !(i < 10) VAL [i=10] [L17] CALL __VERIFIER_assert(time != 1.0) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 22 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/51 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 [2021-11-23 12:48:19,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/drift_tenth.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G --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 cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:48:22,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:48:22,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:48:22,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:48:22,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:48:22,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:48:22,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:48:22,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:48:22,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:48:22,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:48:22,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:48:22,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:48:22,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:48:22,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:48:22,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:48:22,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:48:22,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:48:22,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:48:22,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:48:22,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:48:22,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:48:22,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:48:22,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:48:22,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:48:22,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:48:22,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:48:22,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:48:22,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:48:22,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:48:22,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:48:22,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:48:22,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:48:22,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:48:22,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:48:22,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:48:22,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:48:22,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:48:22,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:48:22,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:48:22,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:48:22,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:48:22,337 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-23 12:48:22,365 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:48:22,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:48:22,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:48:22,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:48:22,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:48:22,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:48:22,368 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:48:22,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:48:22,368 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:48:22,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:48:22,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:48:22,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:48:22,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:48:22,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:48:22,370 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:48:22,370 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 12:48:22,370 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 12:48:22,371 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:48:22,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:48:22,371 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:48:22,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:48:22,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:48:22,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:48:22,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:48:22,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:48:22,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:48:22,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:48:22,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:48:22,373 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 12:48:22,374 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 12:48:22,374 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:48:22,374 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:48:22,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:48:22,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:48:22,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 12:48:22,375 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_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 [2021-11-23 12:48:22,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:48:22,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:48:22,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:48:22,877 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:48:22,878 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:48:22,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/float-benchs/drift_tenth.c [2021-11-23 12:48:22,974 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/data/999f352b7/d2ae8231c5104383bbe1f00e9c0dd753/FLAGb69291f37 [2021-11-23 12:48:23,534 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:48:23,535 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/sv-benchmarks/c/float-benchs/drift_tenth.c [2021-11-23 12:48:23,541 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/data/999f352b7/d2ae8231c5104383bbe1f00e9c0dd753/FLAGb69291f37 [2021-11-23 12:48:23,911 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/data/999f352b7/d2ae8231c5104383bbe1f00e9c0dd753 [2021-11-23 12:48:23,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:48:23,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:48:23,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:48:23,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:48:23,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:48:23,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:48:23" (1/1) ... [2021-11-23 12:48:23,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37707aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:23, skipping insertion in model container [2021-11-23 12:48:23,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:48:23" (1/1) ... [2021-11-23 12:48:23,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:48:23,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:48:24,094 WARN L230 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_6f12c75c-b3a9-4133-bc44-c62446a54744/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2021-11-23 12:48:24,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:48:24,120 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:48:24,133 WARN L230 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_6f12c75c-b3a9-4133-bc44-c62446a54744/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2021-11-23 12:48:24,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:48:24,169 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:48:24,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:24 WrapperNode [2021-11-23 12:48:24,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:48:24,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:48:24,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:48:24,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:48:24,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:24" (1/1) ... [2021-11-23 12:48:24,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:24" (1/1) ... [2021-11-23 12:48:24,242 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2021-11-23 12:48:24,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:48:24,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:48:24,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:48:24,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:48:24,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:24" (1/1) ... [2021-11-23 12:48:24,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:24" (1/1) ... [2021-11-23 12:48:24,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:24" (1/1) ... [2021-11-23 12:48:24,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:24" (1/1) ... [2021-11-23 12:48:24,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:24" (1/1) ... [2021-11-23 12:48:24,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:24" (1/1) ... [2021-11-23 12:48:24,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:24" (1/1) ... [2021-11-23 12:48:24,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:48:24,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:48:24,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:48:24,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:48:24,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:24" (1/1) ... [2021-11-23 12:48:24,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:48:24,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:48:24,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:48:24,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:48:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:48:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:48:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:48:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 12:48:24,448 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:48:24,450 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:48:24,721 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:48:24,726 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:48:24,726 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 12:48:24,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:48:24 BoogieIcfgContainer [2021-11-23 12:48:24,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:48:24,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:48:24,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:48:24,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:48:24,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:48:23" (1/3) ... [2021-11-23 12:48:24,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a509f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:48:24, skipping insertion in model container [2021-11-23 12:48:24,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:48:24" (2/3) ... [2021-11-23 12:48:24,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a509f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:48:24, skipping insertion in model container [2021-11-23 12:48:24,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:48:24" (3/3) ... [2021-11-23 12:48:24,736 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2021-11-23 12:48:24,741 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:48:24,741 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:48:24,851 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:48:24,858 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:48:24,858 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:48:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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) [2021-11-23 12:48:24,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 12:48:24,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:48:24,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 12:48:24,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:48:24,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:48:24,882 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-11-23 12:48:24,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:48:24,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741565274] [2021-11-23 12:48:24,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:48:24,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:48:24,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:48:24,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:48:24,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 12:48:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:48:25,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:48:25,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:48:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:25,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:48:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:25,127 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:48:25,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741565274] [2021-11-23 12:48:25,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741565274] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:48:25,129 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:48:25,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 12:48:25,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589045578] [2021-11-23 12:48:25,132 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:48:25,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:48:25,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:48:25,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:48:25,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:48:25,169 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-23 12:48:25,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:48:25,296 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2021-11-23 12:48:25,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:48:25,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 6 [2021-11-23 12:48:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:48:25,309 INFO L225 Difference]: With dead ends: 23 [2021-11-23 12:48:25,309 INFO L226 Difference]: Without dead ends: 11 [2021-11-23 12:48:25,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:48:25,317 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:48:25,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:48:25,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-23 12:48:25,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-23 12:48:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:48:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-11-23 12:48:25,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2021-11-23 12:48:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:48:25,352 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-11-23 12:48:25,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-23 12:48:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-11-23 12:48:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 12:48:25,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:48:25,353 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-23 12:48:25,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:48:25,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:48:25,570 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:48:25,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:48:25,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1489078833, now seen corresponding path program 1 times [2021-11-23 12:48:25,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:48:25,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227575853] [2021-11-23 12:48:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:48:25,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:48:25,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:48:25,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:48:25,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 12:48:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:48:25,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:48:25,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:48:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:25,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:48:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:25,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:48:25,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227575853] [2021-11-23 12:48:25,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227575853] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:48:25,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:48:25,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-23 12:48:25,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117265338] [2021-11-23 12:48:25,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:48:25,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:48:25,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:48:25,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:48:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:48:25,826 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-11-23 12:48:26,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:48:26,338 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-23 12:48:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 12:48:26,342 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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 10 [2021-11-23 12:48:26,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:48:26,343 INFO L225 Difference]: With dead ends: 23 [2021-11-23 12:48:26,343 INFO L226 Difference]: Without dead ends: 19 [2021-11-23 12:48:26,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:48:26,345 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:48:26,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 12:48:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-23 12:48:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-23 12:48:26,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:48:26,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-23 12:48:26,352 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2021-11-23 12:48:26,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:48:26,352 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-23 12:48:26,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-11-23 12:48:26,353 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-23 12:48:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 12:48:26,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:48:26,356 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1] [2021-11-23 12:48:26,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:48:26,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:48:26,570 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:48:26,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:48:26,571 INFO L85 PathProgramCache]: Analyzing trace with hash -690462407, now seen corresponding path program 2 times [2021-11-23 12:48:26,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:48:26,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498782998] [2021-11-23 12:48:26,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:48:26,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:48:26,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:48:26,573 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:48:26,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 12:48:26,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:48:26,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:48:26,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 12:48:26,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:48:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:48,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:49:17,134 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-23 12:50:00,407 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-23 12:50:09,543 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-23 12:50:11,568 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-23 12:50:13,235 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 6 times theorem prover too weak. 0 trivial. 24 not checked. [2021-11-23 12:50:13,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:50:13,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498782998] [2021-11-23 12:50:13,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498782998] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:50:13,236 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:50:13,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-11-23 12:50:13,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925400992] [2021-11-23 12:50:13,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:50:13,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 12:50:13,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:50:13,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 12:50:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=173, Unknown=11, NotChecked=90, Total=342 [2021-11-23 12:50:13,239 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:50:15,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:50:17,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:50:26,845 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)))) is different from true [2021-11-23 12:50:38,087 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-23 12:50:51,641 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse3 (fp.add c_currentRoundingMode .cse4 |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse0 (fp.add c_currentRoundingMode .cse3 |c_ULTIMATE.start_main_~tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~tick~0#1|)) .cse1)) (= (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse2) .cse2) .cse2) .cse2) .cse2) .cse2)) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse4) .cse1)))))) is different from false [2021-11-23 12:50:53,687 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse3 (fp.add c_currentRoundingMode .cse4 |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse0 (fp.add c_currentRoundingMode .cse3 |c_ULTIMATE.start_main_~tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~tick~0#1|)) .cse1)) (= (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse2) .cse2) .cse2) .cse2) .cse2) .cse2)) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse4) .cse1)))))) is different from true [2021-11-23 12:50:55,721 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~tick~0#1|)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1|) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~tick~0#1|)) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse0))))) is different from false [2021-11-23 12:50:57,751 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~tick~0#1|)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1|) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~tick~0#1|)) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse0))))) is different from true [2021-11-23 12:50:59,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:51:01,831 WARN L534 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 [] [2021-11-23 12:51:17,205 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1|) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~tick~0#1|)) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)))) is different from false [2021-11-23 12:51:19,228 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1|) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~tick~0#1|)) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)))) is different from true [2021-11-23 12:51:21,324 WARN L534 Checker$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 [] [2021-11-23 12:51:40,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:51:42,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:51:45,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:51:47,061 WARN L534 Checker$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 [] [2021-11-23 12:51:49,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:51:51,837 WARN L534 Checker$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 [] [2021-11-23 12:51:53,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:52:03,591 WARN L534 Checker$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 [] [2021-11-23 12:52:05,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:52:07,674 WARN L534 Checker$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 [] [2021-11-23 12:52:09,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:52:11,703 WARN L534 Checker$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 [] [2021-11-23 12:52:12,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:52:12,585 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-11-23 12:52:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:52:12,586 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 12:52:12,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:52:12,586 INFO L225 Difference]: With dead ends: 37 [2021-11-23 12:52:12,587 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 12:52:12,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 144.5s TimeCoverageRelationStatistics Valid=109, Invalid=278, Unknown=25, NotChecked=344, Total=756 [2021-11-23 12:52:12,589 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 14 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 42.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:52:12,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 59 Invalid, 15 Unknown, 64 Unchecked, 42.5s Time] [2021-11-23 12:52:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 12:52:12,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-23 12:52:12,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:12,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-11-23 12:52:12,597 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 18 [2021-11-23 12:52:12,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:52:12,597 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-11-23 12:52:12,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:12,598 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-11-23 12:52:12,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 12:52:12,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:52:12,599 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1] [2021-11-23 12:52:12,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:52:12,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:52:12,800 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:52:12,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:52:12,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1723013437, now seen corresponding path program 3 times [2021-11-23 12:52:12,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:52:12,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143055055] [2021-11-23 12:52:12,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:52:12,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:52:12,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:52:12,802 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:52:12,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 12:52:13,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-11-23 12:52:13,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:52:13,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 12:52:13,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:53:00,008 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:53:34,589 WARN L227 SmtUtils]: Spent 7.75s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:54:13,709 WARN L227 SmtUtils]: Spent 7.27s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:54:51,634 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:54:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 68 refuted. 53 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:59,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:55:11,953 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-23 12:55:50,737 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-23 12:56:00,872 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-23 12:56:02,901 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-23 12:56:13,068 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-23 12:56:15,101 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-23 12:56:26,873 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-23 12:56:37,094 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-23 12:56:39,138 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-23 12:56:49,376 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-23 12:56:51,423 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-23 12:57:01,706 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-23 12:57:03,755 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-23 12:57:14,018 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-23 12:57:16,070 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-23 12:57:22,205 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-11-23 12:57:24,248 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-23 12:57:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 2 refuted. 4 times theorem prover too weak. 0 trivial. 115 not checked. [2021-11-23 12:57:24,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:57:24,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143055055] [2021-11-23 12:57:24,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143055055] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:57:24,250 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:57:24,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-11-23 12:57:24,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162219747] [2021-11-23 12:57:24,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:57:24,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-23 12:57:24,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:57:24,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-23 12:57:24,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=268, Unknown=48, NotChecked=450, Total=870 [2021-11-23 12:57:24,253 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:57:26,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:57:28,631 WARN L860 $PredicateComparison]: unable to prove that (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:57:30,690 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (_ +zero 8 24) |c_ULTIMATE.start_main_~time~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:57:32,749 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:57:34,800 WARN L860 $PredicateComparison]: unable to prove that (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:57:36,849 WARN L860 $PredicateComparison]: unable to prove that (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:57:38,889 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:57:49,616 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:57:53,069 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)))) is different from true [2021-11-23 12:58:08,699 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:58:10,749 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~tick~0#1|) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-23 12:59:15,596 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse1 (fp.add c_currentRoundingMode .cse3 |c_ULTIMATE.start_main_~tick~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~tick~0#1|)) .cse2)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse2)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse2))))) is different from false [2021-11-23 12:59:17,749 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse1 (fp.add c_currentRoundingMode .cse3 |c_ULTIMATE.start_main_~tick~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~tick~0#1|)) .cse2)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse2)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse2))))) is different from true [2021-11-23 12:59:20,681 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1|) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~tick~0#1|)) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)))) is different from true [2021-11-23 12:59:22,722 WARN L534 Checker$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 [] [2021-11-23 13:00:04,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 13:00:06,059 WARN L534 Checker$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 [] [2021-11-23 13:00:11,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 13:00:13,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 13:00:15,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 13:00:17,500 WARN L534 Checker$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 [] [2021-11-23 13:00:20,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 13:00:23,290 WARN L534 Checker$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 [] [2021-11-23 13:00:25,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 13:00:27,332 WARN L534 Checker$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 [] [2021-11-23 13:00:29,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:00:29,695 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2021-11-23 13:00:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 13:00:29,695 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 0 states have call successors, (0), 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 28 [2021-11-23 13:00:29,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:00:29,696 INFO L225 Difference]: With dead ends: 43 [2021-11-23 13:00:29,697 INFO L226 Difference]: Without dead ends: 37 [2021-11-23 13:00:29,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 22 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 327.4s TimeCoverageRelationStatistics Valid=156, Invalid=374, Unknown=64, NotChecked=1386, Total=1980 [2021-11-23 13:00:29,699 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 281 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:00:29,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 76 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 12 Unknown, 281 Unchecked, 30.4s Time] [2021-11-23 13:00:29,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-23 13:00:29,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-23 13:00:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:00:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-11-23 13:00:29,709 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 28 [2021-11-23 13:00:29,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:00:29,709 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-11-23 13:00:29,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:00:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-11-23 13:00:29,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 13:00:29,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:00:29,711 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1] [2021-11-23 13:00:29,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-23 13:00:29,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:00:29,930 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:00:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:29,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2091971637, now seen corresponding path program 4 times [2021-11-23 13:00:29,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:00:29,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351818573] [2021-11-23 13:00:29,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 13:00:29,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:00:29,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:00:29,932 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:00:29,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 13:00:30,301 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 13:00:30,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:00:30,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:00:30,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:00:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 105 proven. 100 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 13:00:31,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:00:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 105 proven. 100 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 13:00:32,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:00:32,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351818573] [2021-11-23 13:00:32,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351818573] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:00:32,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:00:32,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-23 13:00:32,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349134713] [2021-11-23 13:00:32,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:00:32,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-23 13:00:32,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:00:32,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-23 13:00:32,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-11-23 13:00:32,426 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:00:34,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:00:34,372 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-11-23 13:00:34,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:00:34,373 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 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 36 [2021-11-23 13:00:34,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:00:34,373 INFO L225 Difference]: With dead ends: 37 [2021-11-23 13:00:34,373 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 13:00:34,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-11-23 13:00:34,375 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:00:34,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 13:00:34,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 13:00:34,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 13:00:34,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:00:34,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 13:00:34,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-11-23 13:00:34,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:00:34,378 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:00:34,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:00:34,378 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:00:34,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 13:00:34,381 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 13:00:34,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:34,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f12c75c-b3a9-4133-bc44-c62446a54744/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:00:34,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.