./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/interpolation2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa --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 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:32:45,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:32:45,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:32:45,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:32:45,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:32:45,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:32:45,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:32:45,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:32:45,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:32:45,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:32:45,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:32:45,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:32:45,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:32:45,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:32:45,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:32:45,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:32:45,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:32:45,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:32:45,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:32:45,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:32:45,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:32:45,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:32:45,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:32:45,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:32:45,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:32:45,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:32:45,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:32:45,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:32:45,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:32:45,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:32:45,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:32:45,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:32:45,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:32:45,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:32:45,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:32:45,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:32:45,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:32:45,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:32:45,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:32:45,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:32:45,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:32:45,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:32:45,714 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:32:45,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:32:45,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:32:45,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:32:45,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:32:45,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:32:45,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:32:45,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:32:45,716 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:32:45,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:32:45,716 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:32:45,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:32:45,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:32:45,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:32:45,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:32:45,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:32:45,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:32:45,717 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:32:45,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:32:45,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:32:45,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:32:45,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:32:45,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:32:45,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:32:45,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:32:45,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:32:45,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:32:45,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:32:45,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:32:45,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:32:45,719 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:32:45,719 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:32:45,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:32:45,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:32:45,719 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_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1 [2021-12-06 20:32:45,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:32:45,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:32:45,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:32:45,915 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:32:45,916 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:32:45,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-benchs/interpolation2.c [2021-12-06 20:32:45,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/data/4aa7eb080/1254217e96ee4795b9ead63dfdaae1b2/FLAG476e8668b [2021-12-06 20:32:46,351 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:32:46,352 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/sv-benchmarks/c/float-benchs/interpolation2.c [2021-12-06 20:32:46,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/data/4aa7eb080/1254217e96ee4795b9ead63dfdaae1b2/FLAG476e8668b [2021-12-06 20:32:46,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/data/4aa7eb080/1254217e96ee4795b9ead63dfdaae1b2 [2021-12-06 20:32:46,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:32:46,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:32:46,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:32:46,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:32:46,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:32:46,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:32:46" (1/1) ... [2021-12-06 20:32:46,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536ac72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:46, skipping insertion in model container [2021-12-06 20:32:46,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:32:46" (1/1) ... [2021-12-06 20:32:46,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:32:46,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:32:46,522 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_07700671-f830-4a87-bc6c-9f3d6fbcc99d/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2021-12-06 20:32:46,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:32:46,552 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:32:46,564 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_07700671-f830-4a87-bc6c-9f3d6fbcc99d/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2021-12-06 20:32:46,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:32:46,588 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:32:46,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:46 WrapperNode [2021-12-06 20:32:46,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:32:46,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:32:46,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:32:46,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:32:46,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:46" (1/1) ... [2021-12-06 20:32:46,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:46" (1/1) ... [2021-12-06 20:32:46,619 INFO L137 Inliner]: procedures = 18, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100 [2021-12-06 20:32:46,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:32:46,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:32:46,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:32:46,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:32:46,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:46" (1/1) ... [2021-12-06 20:32:46,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:46" (1/1) ... [2021-12-06 20:32:46,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:46" (1/1) ... [2021-12-06 20:32:46,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:46" (1/1) ... [2021-12-06 20:32:46,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:46" (1/1) ... [2021-12-06 20:32:46,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:46" (1/1) ... [2021-12-06 20:32:46,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:46" (1/1) ... [2021-12-06 20:32:46,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:32:46,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:32:46,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:32:46,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:32:46,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:46" (1/1) ... [2021-12-06 20:32:46,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:32:46,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:32:46,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:32:46,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:32:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:32:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:32:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:32:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-06 20:32:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:32:46,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:32:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-12-06 20:32:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:32:46,758 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:32:46,759 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:32:46,844 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:32:46,848 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:32:46,848 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 20:32:46,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:32:46 BoogieIcfgContainer [2021-12-06 20:32:46,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:32:46,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:32:46,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:32:46,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:32:46,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:32:46" (1/3) ... [2021-12-06 20:32:46,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc4823e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:32:46, skipping insertion in model container [2021-12-06 20:32:46,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:46" (2/3) ... [2021-12-06 20:32:46,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc4823e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:32:46, skipping insertion in model container [2021-12-06 20:32:46,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:32:46" (3/3) ... [2021-12-06 20:32:46,855 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation2.c [2021-12-06 20:32:46,859 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:32:46,859 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:32:46,894 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:32:46,900 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 [2021-12-06 20:32:46,900 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:32:46,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:46,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 20:32:46,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:32:46,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:32:46,918 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:32:46,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:32:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1235833265, now seen corresponding path program 1 times [2021-12-06 20:32:46,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:32:46,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000028949] [2021-12-06 20:32:46,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:32:46,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:32:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:32:47,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:32:47,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000028949] [2021-12-06 20:32:47,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000028949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:32:47,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:32:47,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:32:47,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511114476] [2021-12-06 20:32:47,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:32:47,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:32:47,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:32:47,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:32:47,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:32:47,106 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:47,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:32:47,117 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2021-12-06 20:32:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:32:47,119 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 [2021-12-06 20:32:47,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:32:47,124 INFO L225 Difference]: With dead ends: 29 [2021-12-06 20:32:47,125 INFO L226 Difference]: Without dead ends: 13 [2021-12-06 20:32:47,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:32:47,130 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:32:47,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:32:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-06 20:32:47,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-06 20:32:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:47,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-12-06 20:32:47,154 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2021-12-06 20:32:47,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:32:47,154 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-12-06 20:32:47,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:47,155 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-12-06 20:32:47,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 20:32:47,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:32:47,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:32:47,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:32:47,156 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:32:47,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:32:47,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1178902664, now seen corresponding path program 1 times [2021-12-06 20:32:47,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:32:47,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543691865] [2021-12-06 20:32:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:32:47,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:32:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:47,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:32:47,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:32:47,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543691865] [2021-12-06 20:32:47,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543691865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:32:47,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:32:47,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:32:47,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069107210] [2021-12-06 20:32:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:32:47,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:32:47,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:32:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:32:47,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:32:47,221 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:47,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:32:47,235 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-12-06 20:32:47,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:32:47,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 [2021-12-06 20:32:47,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:32:47,237 INFO L225 Difference]: With dead ends: 24 [2021-12-06 20:32:47,237 INFO L226 Difference]: Without dead ends: 20 [2021-12-06 20:32:47,237 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 [2021-12-06 20:32:47,238 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:32:47,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:32:47,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-06 20:32:47,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2021-12-06 20:32:47,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-12-06 20:32:47,243 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2021-12-06 20:32:47,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:32:47,243 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-12-06 20:32:47,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:47,243 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-12-06 20:32:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 20:32:47,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:32:47,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:32:47,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:32:47,244 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:32:47,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:32:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2110328889, now seen corresponding path program 1 times [2021-12-06 20:32:47,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:32:47,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109360381] [2021-12-06 20:32:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:32:47,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:32:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:32:47,276 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:32:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:32:47,310 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:32:47,310 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 20:32:47,311 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 20:32:47,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:32:47,316 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-06 20:32:47,318 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 20:32:47,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 08:32:47 BoogieIcfgContainer [2021-12-06 20:32:47,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 20:32:47,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 20:32:47,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 20:32:47,341 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 20:32:47,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:32:46" (3/4) ... [2021-12-06 20:32:47,343 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 20:32:47,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 20:32:47,344 INFO L158 Benchmark]: Toolchain (without parser) took 971.19ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 68.0MB in the beginning and 78.7MB in the end (delta: -10.7MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2021-12-06 20:32:47,345 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 100.7MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:32:47,345 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.18ms. Allocated memory is still 100.7MB. Free memory was 67.8MB in the beginning and 75.4MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 20:32:47,345 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.91ms. Allocated memory is still 100.7MB. Free memory was 75.4MB in the beginning and 73.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 20:32:47,346 INFO L158 Benchmark]: Boogie Preprocessor took 21.01ms. Allocated memory is still 100.7MB. Free memory was 73.6MB in the beginning and 72.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:32:47,346 INFO L158 Benchmark]: RCFGBuilder took 208.53ms. Allocated memory is still 100.7MB. Free memory was 72.3MB in the beginning and 61.4MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 20:32:47,347 INFO L158 Benchmark]: TraceAbstraction took 489.16ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 61.0MB in the beginning and 79.2MB in the end (delta: -18.2MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-12-06 20:32:47,347 INFO L158 Benchmark]: Witness Printer took 3.13ms. Allocated memory is still 121.6MB. Free memory was 79.2MB in the beginning and 78.7MB in the end (delta: 545.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:32:47,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 100.7MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.18ms. Allocated memory is still 100.7MB. Free memory was 67.8MB in the beginning and 75.4MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.91ms. Allocated memory is still 100.7MB. Free memory was 75.4MB in the beginning and 73.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.01ms. Allocated memory is still 100.7MB. Free memory was 73.6MB in the beginning and 72.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 208.53ms. Allocated memory is still 100.7MB. Free memory was 72.3MB in the beginning and 61.4MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 489.16ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 61.0MB in the beginning and 79.2MB in the end (delta: -18.2MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Witness Printer took 3.13ms. Allocated memory is still 121.6MB. Free memory was 79.2MB in the beginning and 78.7MB in the end (delta: 545.1kB). 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: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 28, overapproximation of to_real at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L13] int i; [L14] float z, t; [L15] float min[] = { 5, 10, 12, 30, 150 }; [L16] float max[] = { 10, 12, 30, 150, 300 }; [L17] float org[] = { 1, 5, -10, 30, 20 }; [L18] float slope[] = { 4, -15, 40, -10, 0 }; [L20] t = __VERIFIER_nondet_float() [L21] EXPR min[0] [L21] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L21] EXPR max[sizeof(max) / sizeof(max[0]) - 1] [L21] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] VAL [max={7:0}, max[sizeof(max) / sizeof(max[0]) - 1]=51, min={5:0}, min[0]=50, org={4:0}, slope={6:0}] [L21] CALL assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L7] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L21] RET assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L23] i = 0 VAL [i=0, max={7:0}, min={5:0}, org={4:0}, slope={6:0}] [L23] COND TRUE i < sizeof(min) / sizeof(min[0]) [L24] EXPR max[i] VAL [i=0, max={7:0}, max[i]=49, min={5:0}, org={4:0}, slope={6:0}] [L24] COND TRUE t <= max[i] [L26] EXPR org[i] [L26] EXPR slope[i] [L26] EXPR min[i] [L26] EXPR max[i] [L26] EXPR min[i] [L26] z = org[i] + slope[i] * (t - min[i]) / (max[i] - min[i]) [L28] CALL __VERIFIER_assert(z >= -10.f && z <= 30.f) [L9] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 [2021-12-06 20:32:47,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/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_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa --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 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:32:48,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:32:48,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:32:48,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:32:48,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:32:48,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:32:48,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:32:48,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:32:48,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:32:48,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:32:48,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:32:48,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:32:48,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:32:48,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:32:48,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:32:48,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:32:48,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:32:49,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:32:49,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:32:49,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:32:49,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:32:49,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:32:49,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:32:49,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:32:49,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:32:49,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:32:49,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:32:49,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:32:49,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:32:49,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:32:49,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:32:49,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:32:49,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:32:49,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:32:49,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:32:49,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:32:49,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:32:49,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:32:49,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:32:49,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:32:49,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:32:49,025 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 20:32:49,048 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:32:49,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:32:49,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:32:49,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:32:49,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:32:49,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:32:49,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:32:49,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:32:49,050 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:32:49,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:32:49,050 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:32:49,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:32:49,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:32:49,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:32:49,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:32:49,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:32:49,051 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 20:32:49,051 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 20:32:49,051 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 20:32:49,051 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:32:49,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:32:49,051 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:32:49,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:32:49,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:32:49,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:32:49,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:32:49,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:32:49,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:32:49,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:32:49,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:32:49,053 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 20:32:49,053 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 20:32:49,053 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:32:49,053 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:32:49,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:32:49,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:32:49,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 20:32:49,054 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_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1 [2021-12-06 20:32:49,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:32:49,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:32:49,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:32:49,304 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:32:49,305 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:32:49,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-benchs/interpolation2.c [2021-12-06 20:32:49,351 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/data/2eb7c572e/02cee554f9da43ad9d785bad3e7468a3/FLAG65fdbc509 [2021-12-06 20:32:49,720 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:32:49,720 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/sv-benchmarks/c/float-benchs/interpolation2.c [2021-12-06 20:32:49,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/data/2eb7c572e/02cee554f9da43ad9d785bad3e7468a3/FLAG65fdbc509 [2021-12-06 20:32:49,734 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/data/2eb7c572e/02cee554f9da43ad9d785bad3e7468a3 [2021-12-06 20:32:49,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:32:49,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:32:49,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:32:49,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:32:49,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:32:49,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:32:49" (1/1) ... [2021-12-06 20:32:49,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc54e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:49, skipping insertion in model container [2021-12-06 20:32:49,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:32:49" (1/1) ... [2021-12-06 20:32:49,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:32:49,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:32:49,850 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_07700671-f830-4a87-bc6c-9f3d6fbcc99d/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2021-12-06 20:32:49,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:32:49,876 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:32:49,892 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_07700671-f830-4a87-bc6c-9f3d6fbcc99d/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2021-12-06 20:32:49,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:32:49,920 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:32:49,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:49 WrapperNode [2021-12-06 20:32:49,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:32:49,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:32:49,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:32:49,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:32:49,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:49" (1/1) ... [2021-12-06 20:32:49,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:49" (1/1) ... [2021-12-06 20:32:49,952 INFO L137 Inliner]: procedures = 19, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2021-12-06 20:32:49,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:32:49,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:32:49,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:32:49,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:32:49,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:49" (1/1) ... [2021-12-06 20:32:49,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:49" (1/1) ... [2021-12-06 20:32:49,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:49" (1/1) ... [2021-12-06 20:32:49,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:49" (1/1) ... [2021-12-06 20:32:49,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:49" (1/1) ... [2021-12-06 20:32:49,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:49" (1/1) ... [2021-12-06 20:32:49,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:49" (1/1) ... [2021-12-06 20:32:49,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:32:49,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:32:49,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:32:49,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:32:49,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:49" (1/1) ... [2021-12-06 20:32:49,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:32:49,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:32:50,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:32:50,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:32:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:32:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-12-06 20:32:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 20:32:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:32:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-12-06 20:32:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:32:50,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:32:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:32:50,106 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:32:50,108 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:32:52,394 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:32:52,404 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:32:52,404 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 20:32:52,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:32:52 BoogieIcfgContainer [2021-12-06 20:32:52,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:32:52,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:32:52,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:32:52,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:32:52,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:32:49" (1/3) ... [2021-12-06 20:32:52,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784780fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:32:52, skipping insertion in model container [2021-12-06 20:32:52,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:32:49" (2/3) ... [2021-12-06 20:32:52,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784780fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:32:52, skipping insertion in model container [2021-12-06 20:32:52,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:32:52" (3/3) ... [2021-12-06 20:32:52,412 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation2.c [2021-12-06 20:32:52,416 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:32:52,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:32:52,451 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:32:52,457 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 [2021-12-06 20:32:52,457 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:32:52,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:52,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 20:32:52,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:32:52,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:32:52,472 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:32:52,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:32:52,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1235833265, now seen corresponding path program 1 times [2021-12-06 20:32:52,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:32:52,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662537692] [2021-12-06 20:32:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:32:52,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:32:52,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:32:52,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:32:52,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 20:32:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:52,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 20:32:52,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:32:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:32:52,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:32:52,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:32:52,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662537692] [2021-12-06 20:32:52,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662537692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:32:52,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:32:52,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:32:52,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130189080] [2021-12-06 20:32:52,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:32:52,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:32:52,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:32:52,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:32:52,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:32:52,985 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:52,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:32:52,996 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2021-12-06 20:32:52,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:32:52,997 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 [2021-12-06 20:32:52,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:32:53,003 INFO L225 Difference]: With dead ends: 29 [2021-12-06 20:32:53,003 INFO L226 Difference]: Without dead ends: 13 [2021-12-06 20:32:53,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:32:53,009 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:32:53,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:32:53,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-06 20:32:53,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-06 20:32:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-12-06 20:32:53,032 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2021-12-06 20:32:53,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:32:53,033 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-12-06 20:32:53,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:53,033 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-12-06 20:32:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 20:32:53,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:32:53,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:32:53,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:32:53,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:32:53,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:32:53,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:32:53,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1178902664, now seen corresponding path program 1 times [2021-12-06 20:32:53,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:32:53,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754183765] [2021-12-06 20:32:53,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:32:53,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:32:53,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:32:53,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:32:53,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 20:32:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:53,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:32:53,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:32:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:32:53,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:32:53,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:32:53,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754183765] [2021-12-06 20:32:53,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754183765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:32:53,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:32:53,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:32:53,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677921956] [2021-12-06 20:32:53,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:32:53,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:32:53,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:32:53,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:32:53,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:32:53,677 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:55,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:32:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:32:55,997 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-12-06 20:32:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:32:55,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 [2021-12-06 20:32:55,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:32:55,998 INFO L225 Difference]: With dead ends: 21 [2021-12-06 20:32:55,998 INFO L226 Difference]: Without dead ends: 17 [2021-12-06 20:32:55,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:32:56,000 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:32:56,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 21 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 20:32:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-06 20:32:56,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2021-12-06 20:32:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-12-06 20:32:56,006 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2021-12-06 20:32:56,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:32:56,007 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-12-06 20:32:56,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:32:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-12-06 20:32:56,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 20:32:56,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:32:56,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:32:56,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 20:32:56,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:32:56,210 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:32:56,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:32:56,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2110328889, now seen corresponding path program 1 times [2021-12-06 20:32:56,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:32:56,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427140737] [2021-12-06 20:32:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:32:56,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:32:56,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:32:56,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:32:56,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 20:32:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:56,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 20:32:56,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:33:02,312 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-12-06 20:33:02,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 612 treesize of output 312 [2021-12-06 20:38:01,206 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (v_arrayElimCell_5 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5))) (.cse3 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1))) (.cse4 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse2 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2)))) (and (let ((.cse0 (fp.leq (fp.add roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse3)) (fp.sub roundNearestTiesToEven .cse4 .cse3))) ((_ to_fp 8 24) roundNearestTiesToEven 30.0)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse0)) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse0))) (fp.leq |ULTIMATE.start_main_~t~0#1| .cse4) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv1 32))) (fp.geq |ULTIMATE.start_main_~t~0#1| .cse3) (= .cse3 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse4) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4 32)) .cse2)))) is different from false [2021-12-06 20:38:03,233 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (v_arrayElimCell_5 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5))) (.cse3 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1))) (.cse4 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse2 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2)))) (and (let ((.cse0 (fp.leq (fp.add roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse3)) (fp.sub roundNearestTiesToEven .cse4 .cse3))) ((_ to_fp 8 24) roundNearestTiesToEven 30.0)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse0)) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse0))) (fp.leq |ULTIMATE.start_main_~t~0#1| .cse4) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv1 32))) (fp.geq |ULTIMATE.start_main_~t~0#1| .cse3) (= .cse3 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse4) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4 32)) .cse2)))) is different from true [2021-12-06 20:39:22,961 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (v_arrayElimCell_5 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5))) (.cse2 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1))) (.cse3 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2)))) (and (not (fp.leq (fp.add roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse2)) (fp.sub roundNearestTiesToEven .cse3 .cse2))) ((_ to_fp 8 24) roundNearestTiesToEven 30.0))) (fp.leq |ULTIMATE.start_main_~t~0#1| .cse3) (= .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv1 32))) (fp.geq |ULTIMATE.start_main_~t~0#1| .cse2) (= .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse3) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4 32)) .cse1)))) is different from false [2021-12-06 20:39:24,988 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (v_arrayElimCell_5 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5))) (.cse2 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1))) (.cse3 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2)))) (and (not (fp.leq (fp.add roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse2)) (fp.sub roundNearestTiesToEven .cse3 .cse2))) ((_ to_fp 8 24) roundNearestTiesToEven 30.0))) (fp.leq |ULTIMATE.start_main_~t~0#1| .cse3) (= .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv1 32))) (fp.geq |ULTIMATE.start_main_~t~0#1| .cse2) (= .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse3) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4 32)) .cse1)))) is different from true [2021-12-06 20:39:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:39:24,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:39:24,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:39:24,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427140737] [2021-12-06 20:39:24,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427140737] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:39:24,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:39:24,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:39:24,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521849102] [2021-12-06 20:39:24,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:39:24,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:39:24,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:39:24,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:39:24,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=61, Unknown=4, NotChecked=34, Total=132 [2021-12-06 20:39:24,992 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 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) [2021-12-06 20:39:29,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:39:30,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:39:30,006 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-12-06 20:39:30,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:39:30,007 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 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) Word has length 11 [2021-12-06 20:39:30,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:39:30,008 INFO L225 Difference]: With dead ends: 28 [2021-12-06 20:39:30,008 INFO L226 Difference]: Without dead ends: 24 [2021-12-06 20:39:30,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=77, Invalid=167, Unknown=4, NotChecked=58, Total=306 [2021-12-06 20:39:30,010 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:39:30,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 18 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 78 Invalid, 1 Unknown, 33 Unchecked, 2.8s Time] [2021-12-06 20:39:30,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-06 20:39:30,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2021-12-06 20:39:30,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:39:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-06 20:39:30,014 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2021-12-06 20:39:30,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:39:30,014 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-06 20:39:30,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 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) [2021-12-06 20:39:30,015 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-06 20:39:30,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 20:39:30,015 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:39:30,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:39:30,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 20:39:30,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:39:30,218 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:39:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:39:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1504580037, now seen corresponding path program 1 times [2021-12-06 20:39:30,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:39:30,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829069238] [2021-12-06 20:39:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:39:30,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:39:30,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:39:30,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:39:30,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 20:39:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:39:30,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:39:30,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:39:30,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:39:30,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:39:30,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:39:30,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829069238] [2021-12-06 20:39:30,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829069238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:39:30,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:39:30,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:39:30,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690461115] [2021-12-06 20:39:30,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:39:30,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:39:30,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:39:30,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:39:30,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:39:30,649 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-12-06 20:39:30,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:39:30,719 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-12-06 20:39:30,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:39:30,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) Word has length 11 [2021-12-06 20:39:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:39:30,720 INFO L225 Difference]: With dead ends: 26 [2021-12-06 20:39:30,720 INFO L226 Difference]: Without dead ends: 15 [2021-12-06 20:39:30,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:39:30,722 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:39:30,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:39:30,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-06 20:39:30,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-06 20:39:30,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 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) [2021-12-06 20:39:30,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-12-06 20:39:30,725 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2021-12-06 20:39:30,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:39:30,725 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-12-06 20:39:30,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-12-06 20:39:30,726 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-12-06 20:39:30,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 20:39:30,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:39:30,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:39:30,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 20:39:30,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:39:30,928 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:39:30,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:39:30,930 INFO L85 PathProgramCache]: Analyzing trace with hash 854582592, now seen corresponding path program 1 times [2021-12-06 20:39:30,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:39:30,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019296257] [2021-12-06 20:39:30,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:39:30,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:39:30,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:39:30,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:39:30,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 20:39:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:39:31,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:39:31,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:39:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:39:31,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:39:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:39:31,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:39:31,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019296257] [2021-12-06 20:39:31,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019296257] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:39:31,459 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:39:31,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-06 20:39:31,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479265148] [2021-12-06 20:39:31,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:39:31,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:39:31,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:39:31,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:39:31,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:39:31,460 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:39:33,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:39:33,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:39:33,880 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-12-06 20:39:33,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:39:33,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 20:39:33,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:39:33,882 INFO L225 Difference]: With dead ends: 30 [2021-12-06 20:39:33,882 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 20:39:33,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:39:33,884 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:39:33,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 36 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 20:39:33,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 20:39:33,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2021-12-06 20:39:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:39:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-12-06 20:39:33,890 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2021-12-06 20:39:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:39:33,890 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-12-06 20:39:33,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:39:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-12-06 20:39:33,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 20:39:33,890 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:39:33,891 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:39:33,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 20:39:34,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:39:34,092 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:39:34,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:39:34,094 INFO L85 PathProgramCache]: Analyzing trace with hash 723862385, now seen corresponding path program 1 times [2021-12-06 20:39:34,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:39:34,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961301495] [2021-12-06 20:39:34,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:39:34,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:39:34,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:39:34,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:39:34,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07700671-f830-4a87-bc6c-9f3d6fbcc99d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 20:39:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:39:34,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-06 20:39:34,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:39:43,036 INFO L354 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2021-12-06 20:39:43,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 659 treesize of output 335 [2021-12-06 20:46:40,189 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_10 (_ BitVec 32)) (v_arrayElimCell_12 (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32)) (v_arrayElimCell_8 (_ BitVec 32)) (v_arrayElimCell_6 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24))) (let ((.cse5 (fp ((_ extract 31 31) v_arrayElimCell_8) ((_ extract 30 23) v_arrayElimCell_8) ((_ extract 22 0) v_arrayElimCell_8))) (.cse7 (fp ((_ extract 31 31) v_arrayElimCell_12) ((_ extract 30 23) v_arrayElimCell_12) ((_ extract 22 0) v_arrayElimCell_12))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_11) ((_ extract 30 23) v_arrayElimCell_11) ((_ extract 22 0) v_arrayElimCell_11))) (.cse4 (fp ((_ extract 31 31) v_arrayElimCell_10) ((_ extract 30 23) v_arrayElimCell_10) ((_ extract 22 0) v_arrayElimCell_10))) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32))) (.cse6 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (and (= .cse0 .cse1) (let ((.cse2 (fp.add roundNearestTiesToEven .cse4 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse5 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse6)) (fp.sub roundNearestTiesToEven .cse7 .cse6))))) (let ((.cse3 (fp.geq .cse2 (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 10.0))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (fp.leq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven 30.0)) .cse3) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse3))))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4294967281 32)) .cse5) (fp.leq |ULTIMATE.start_main_~t~0#1| .cse7) (= .cse7 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv12 32))) (not (fp.leq |ULTIMATE.start_main_~t~0#1| .cse0)) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32)) .cse4) (= .cse1 .cse6)))) is different from false [2021-12-06 20:46:42,208 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_10 (_ BitVec 32)) (v_arrayElimCell_12 (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32)) (v_arrayElimCell_8 (_ BitVec 32)) (v_arrayElimCell_6 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24))) (let ((.cse5 (fp ((_ extract 31 31) v_arrayElimCell_8) ((_ extract 30 23) v_arrayElimCell_8) ((_ extract 22 0) v_arrayElimCell_8))) (.cse7 (fp ((_ extract 31 31) v_arrayElimCell_12) ((_ extract 30 23) v_arrayElimCell_12) ((_ extract 22 0) v_arrayElimCell_12))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_11) ((_ extract 30 23) v_arrayElimCell_11) ((_ extract 22 0) v_arrayElimCell_11))) (.cse4 (fp ((_ extract 31 31) v_arrayElimCell_10) ((_ extract 30 23) v_arrayElimCell_10) ((_ extract 22 0) v_arrayElimCell_10))) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32))) (.cse6 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (and (= .cse0 .cse1) (let ((.cse2 (fp.add roundNearestTiesToEven .cse4 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse5 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse6)) (fp.sub roundNearestTiesToEven .cse7 .cse6))))) (let ((.cse3 (fp.geq .cse2 (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 10.0))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (fp.leq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven 30.0)) .cse3) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse3))))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4294967281 32)) .cse5) (fp.leq |ULTIMATE.start_main_~t~0#1| .cse7) (= .cse7 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv12 32))) (not (fp.leq |ULTIMATE.start_main_~t~0#1| .cse0)) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32)) .cse4) (= .cse1 .cse6)))) is different from true [2021-12-06 20:48:10,907 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_10 (_ BitVec 32)) (v_arrayElimCell_12 (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32)) (v_arrayElimCell_8 (_ BitVec 32)) (v_arrayElimCell_6 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_11) ((_ extract 30 23) v_arrayElimCell_11) ((_ extract 22 0) v_arrayElimCell_11))) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32))) (.cse4 (fp ((_ extract 31 31) v_arrayElimCell_10) ((_ extract 30 23) v_arrayElimCell_10) ((_ extract 22 0) v_arrayElimCell_10))) (.cse2 (fp ((_ extract 31 31) v_arrayElimCell_8) ((_ extract 30 23) v_arrayElimCell_8) ((_ extract 22 0) v_arrayElimCell_8))) (.cse3 (fp ((_ extract 31 31) v_arrayElimCell_12) ((_ extract 30 23) v_arrayElimCell_12) ((_ extract 22 0) v_arrayElimCell_12))) (.cse5 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (and (= .cse0 .cse1) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4294967281 32)) .cse2) (fp.leq |ULTIMATE.start_main_~t~0#1| .cse3) (= .cse3 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv12 32))) (not (fp.leq |ULTIMATE.start_main_~t~0#1| .cse0)) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32)) .cse4) (= .cse1 .cse5) (not (fp.geq (fp.add roundNearestTiesToEven .cse4 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse5)) (fp.sub roundNearestTiesToEven .cse3 .cse5))) (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 10.0))))))) is different from false [2021-12-06 20:48:12,926 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_10 (_ BitVec 32)) (v_arrayElimCell_12 (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32)) (v_arrayElimCell_8 (_ BitVec 32)) (v_arrayElimCell_6 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_11) ((_ extract 30 23) v_arrayElimCell_11) ((_ extract 22 0) v_arrayElimCell_11))) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32))) (.cse4 (fp ((_ extract 31 31) v_arrayElimCell_10) ((_ extract 30 23) v_arrayElimCell_10) ((_ extract 22 0) v_arrayElimCell_10))) (.cse2 (fp ((_ extract 31 31) v_arrayElimCell_8) ((_ extract 30 23) v_arrayElimCell_8) ((_ extract 22 0) v_arrayElimCell_8))) (.cse3 (fp ((_ extract 31 31) v_arrayElimCell_12) ((_ extract 30 23) v_arrayElimCell_12) ((_ extract 22 0) v_arrayElimCell_12))) (.cse5 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (and (= .cse0 .cse1) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4294967281 32)) .cse2) (fp.leq |ULTIMATE.start_main_~t~0#1| .cse3) (= .cse3 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv12 32))) (not (fp.leq |ULTIMATE.start_main_~t~0#1| .cse0)) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32)) .cse4) (= .cse1 .cse5) (not (fp.geq (fp.add roundNearestTiesToEven .cse4 (fp.div roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse5)) (fp.sub roundNearestTiesToEven .cse3 .cse5))) (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 10.0))))))) is different from true [2021-12-06 20:48:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:48:12,927 INFO L328 TraceCheckSpWp]: Computing backward predicates...