./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 38ccaeaf311fb01804239f58019ab7743a9fb69960e13f76d7c528e868915a3a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:59:02,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:59:02,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:59:02,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:59:02,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:59:02,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:59:02,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:59:02,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:59:02,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:59:02,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:59:02,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:59:02,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:59:02,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:59:02,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:59:02,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:59:02,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:59:02,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:59:02,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:59:02,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:59:02,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:59:02,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:59:02,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:59:02,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:59:02,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:59:02,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:59:02,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:59:02,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:59:02,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:59:02,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:59:02,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:59:02,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:59:02,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:59:02,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:59:02,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:59:02,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:59:02,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:59:02,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:59:02,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:59:02,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:59:02,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:59:02,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:59:02,617 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:59:02,642 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:59:02,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:59:02,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:59:02,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:59:02,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:59:02,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:59:02,644 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:59:02,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:59:02,645 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:59:02,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:59:02,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:59:02,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:59:02,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:59:02,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:59:02,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:59:02,646 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:59:02,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:59:02,646 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:59:02,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:59:02,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:59:02,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:59:02,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:59:02,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:59:02,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:59:02,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:59:02,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:59:02,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:59:02,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:59:02,648 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:59:02,649 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:59:02,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:59:02,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:59:02,649 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_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38ccaeaf311fb01804239f58019ab7743a9fb69960e13f76d7c528e868915a3a [2021-11-23 13:59:02,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:59:02,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:59:02,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:59:02,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:59:02,938 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:59:02,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c [2021-11-23 13:59:03,047 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/data/17db8f3fe/2b2f1b91c5ef49ce838a39ce2c4f7acc/FLAG161dc44a1 [2021-11-23 13:59:03,496 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:59:03,496 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c [2021-11-23 13:59:03,503 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/data/17db8f3fe/2b2f1b91c5ef49ce838a39ce2c4f7acc/FLAG161dc44a1 [2021-11-23 13:59:03,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/data/17db8f3fe/2b2f1b91c5ef49ce838a39ce2c4f7acc [2021-11-23 13:59:03,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:59:03,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:59:03,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:59:03,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:59:03,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:59:03,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:03" (1/1) ... [2021-11-23 13:59:03,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346fc4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:03, skipping insertion in model container [2021-11-23 13:59:03,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:03" (1/1) ... [2021-11-23 13:59:03,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:59:03,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:59:04,103 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_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c[712,725] [2021-11-23 13:59:04,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:59:04,125 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:59:04,137 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_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c[712,725] [2021-11-23 13:59:04,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:59:04,159 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:59:04,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:04 WrapperNode [2021-11-23 13:59:04,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:59:04,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:59:04,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:59:04,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:59:04,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:04" (1/1) ... [2021-11-23 13:59:04,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:04" (1/1) ... [2021-11-23 13:59:04,199 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2021-11-23 13:59:04,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:59:04,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:59:04,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:59:04,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:59:04,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:04" (1/1) ... [2021-11-23 13:59:04,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:04" (1/1) ... [2021-11-23 13:59:04,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:04" (1/1) ... [2021-11-23 13:59:04,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:04" (1/1) ... [2021-11-23 13:59:04,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:04" (1/1) ... [2021-11-23 13:59:04,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:04" (1/1) ... [2021-11-23 13:59:04,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:04" (1/1) ... [2021-11-23 13:59:04,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:59:04,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:59:04,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:59:04,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:59:04,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:04" (1/1) ... [2021-11-23 13:59:04,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:59:04,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:59:04,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:59:04,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:59:04,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:59:04,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:59:04,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:59:04,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:59:04,397 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:59:04,399 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:59:04,513 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:59:04,519 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:59:04,519 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:59:04,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:04 BoogieIcfgContainer [2021-11-23 13:59:04,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:59:04,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:59:04,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:59:04,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:59:04,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:59:03" (1/3) ... [2021-11-23 13:59:04,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3748f2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:04, skipping insertion in model container [2021-11-23 13:59:04,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:04" (2/3) ... [2021-11-23 13:59:04,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3748f2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:04, skipping insertion in model container [2021-11-23 13:59:04,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:04" (3/3) ... [2021-11-23 13:59:04,545 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound50.c [2021-11-23 13:59:04,550 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:59:04,550 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 13:59:04,636 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:59:04,659 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:59:04,659 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 13:59:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 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) [2021-11-23 13:59:04,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 13:59:04,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:59:04,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 13:59:04,716 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:59:04,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:59:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-11-23 13:59:04,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:59:04,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43101154] [2021-11-23 13:59:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:59:04,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:59:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:59:04,852 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:59:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:59:04,906 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:59:04,908 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 13:59:04,910 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-23 13:59:04,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-23 13:59:04,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:59:04,918 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 13:59:04,921 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:59:04,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:59:04 BoogieIcfgContainer [2021-11-23 13:59:04,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:59:04,951 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:59:04,951 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:59:04,952 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:59:04,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:04" (3/4) ... [2021-11-23 13:59:04,956 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 13:59:04,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:59:04,960 INFO L158 Benchmark]: Toolchain (without parser) took 1069.12ms. Allocated memory is still 111.1MB. Free memory was 71.0MB in the beginning and 60.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-11-23 13:59:04,960 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:59:04,962 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.57ms. Allocated memory is still 111.1MB. Free memory was 70.8MB in the beginning and 85.6MB in the end (delta: -14.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 13:59:04,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.43ms. Allocated memory is still 111.1MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:59:04,964 INFO L158 Benchmark]: Boogie Preprocessor took 32.79ms. Allocated memory is still 111.1MB. Free memory was 84.3MB in the beginning and 83.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:59:04,965 INFO L158 Benchmark]: RCFGBuilder took 288.20ms. Allocated memory is still 111.1MB. Free memory was 83.1MB in the beginning and 74.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:59:04,966 INFO L158 Benchmark]: TraceAbstraction took 424.72ms. Allocated memory is still 111.1MB. Free memory was 73.5MB in the beginning and 60.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 13:59:04,966 INFO L158 Benchmark]: Witness Printer took 4.99ms. Allocated memory is still 111.1MB. Free memory was 60.4MB in the beginning and 60.1MB in the end (delta: 326.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:59:04,970 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.57ms. Allocated memory is still 111.1MB. Free memory was 70.8MB in the beginning and 85.6MB in the end (delta: -14.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.43ms. Allocated memory is still 111.1MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.79ms. Allocated memory is still 111.1MB. Free memory was 84.3MB in the beginning and 83.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 288.20ms. Allocated memory is still 111.1MB. Free memory was 83.1MB in the beginning and 74.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 424.72ms. Allocated memory is still 111.1MB. Free memory was 73.5MB in the beginning and 60.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.99ms. Allocated memory is still 111.1MB. Free memory was 60.4MB in the beginning and 60.1MB in the end (delta: 326.1kB). Peak memory consumption was 2.1MB. 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: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0, r=0] [L32] EXPR counter++ VAL [counter=1, counter++=0, r=0] [L32] COND TRUE counter++<50 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-11-23 13:59:05,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 38ccaeaf311fb01804239f58019ab7743a9fb69960e13f76d7c528e868915a3a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:59:07,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:59:07,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:59:07,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:59:07,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:59:07,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:59:07,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:59:07,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:59:07,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:59:07,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:59:07,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:59:07,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:59:07,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:59:07,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:59:07,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:59:07,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:59:07,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:59:07,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:59:07,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:59:07,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:59:07,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:59:07,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:59:07,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:59:07,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:59:07,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:59:07,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:59:07,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:59:07,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:59:07,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:59:07,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:59:07,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:59:07,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:59:07,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:59:07,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:59:07,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:59:07,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:59:07,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:59:07,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:59:07,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:59:07,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:59:07,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:59:07,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-23 13:59:07,648 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:59:07,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:59:07,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:59:07,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:59:07,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:59:07,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:59:07,652 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:59:07,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:59:07,652 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:59:07,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:59:07,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:59:07,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:59:07,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:59:07,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:59:07,655 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:59:07,655 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 13:59:07,655 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 13:59:07,656 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:59:07,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:59:07,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:59:07,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:59:07,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:59:07,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:59:07,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:59:07,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:59:07,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:59:07,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:59:07,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:59:07,659 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 13:59:07,660 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 13:59:07,660 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:59:07,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:59:07,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:59:07,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:59:07,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 13:59:07,661 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_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38ccaeaf311fb01804239f58019ab7743a9fb69960e13f76d7c528e868915a3a [2021-11-23 13:59:08,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:59:08,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:59:08,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:59:08,081 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:59:08,083 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:59:08,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c [2021-11-23 13:59:08,156 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/data/233707ef9/8b9120ebe317496c913d8e112355c0eb/FLAG4950903a2 [2021-11-23 13:59:08,733 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:59:08,733 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c [2021-11-23 13:59:08,739 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/data/233707ef9/8b9120ebe317496c913d8e112355c0eb/FLAG4950903a2 [2021-11-23 13:59:09,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/data/233707ef9/8b9120ebe317496c913d8e112355c0eb [2021-11-23 13:59:09,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:59:09,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:59:09,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:59:09,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:59:09,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:59:09,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:09" (1/1) ... [2021-11-23 13:59:09,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10aa0e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09, skipping insertion in model container [2021-11-23 13:59:09,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:09" (1/1) ... [2021-11-23 13:59:09,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:59:09,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:59:09,342 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_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c[712,725] [2021-11-23 13:59:09,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:59:09,388 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:59:09,404 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_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c[712,725] [2021-11-23 13:59:09,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:59:09,480 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:59:09,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09 WrapperNode [2021-11-23 13:59:09,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:59:09,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:59:09,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:59:09,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:59:09,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2021-11-23 13:59:09,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2021-11-23 13:59:09,546 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2021-11-23 13:59:09,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:59:09,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:59:09,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:59:09,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:59:09,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2021-11-23 13:59:09,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2021-11-23 13:59:09,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2021-11-23 13:59:09,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2021-11-23 13:59:09,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2021-11-23 13:59:09,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2021-11-23 13:59:09,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2021-11-23 13:59:09,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:59:09,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:59:09,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:59:09,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:59:09,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2021-11-23 13:59:09,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:59:09,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:59:09,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:59:09,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:59:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:59:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 13:59:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:59:09,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:59:09,770 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:59:09,772 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:59:14,433 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:59:14,438 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:59:14,439 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:59:14,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:14 BoogieIcfgContainer [2021-11-23 13:59:14,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:59:14,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:59:14,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:59:14,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:59:14,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:59:09" (1/3) ... [2021-11-23 13:59:14,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62acb42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:14, skipping insertion in model container [2021-11-23 13:59:14,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (2/3) ... [2021-11-23 13:59:14,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62acb42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:14, skipping insertion in model container [2021-11-23 13:59:14,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:14" (3/3) ... [2021-11-23 13:59:14,448 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound50.c [2021-11-23 13:59:14,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:59:14,454 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 13:59:14,501 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:59:14,508 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:59:14,508 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 13:59:14,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 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) [2021-11-23 13:59:14,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 13:59:14,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:59:14,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 13:59:14,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:59:14,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:59:14,533 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-11-23 13:59:14,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:59:14,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16963256] [2021-11-23 13:59:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:59:14,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:59:14,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:59:14,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:59:14,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 13:59:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:59:16,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:59:16,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:59:36,341 WARN L838 $PredicateComparison]: unable to prove that (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (exists ((|ULTIMATE.start_main_~a~0#1| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~a~0#1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (and (exists ((|ULTIMATE.start_main_~a~0#1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |ULTIMATE.start_main_~a~0#1|) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)))) is different from false [2021-11-23 13:59:42,747 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~a~0#1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~a~0#1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from false [2021-11-23 13:59:44,779 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~a~0#1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~a~0#1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from true [2021-11-23 13:59:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:59:44,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:59:51,069 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2021-11-23 13:59:53,126 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2021-11-23 14:00:03,351 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~a~0#1_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_6|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_6| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) is different from false [2021-11-23 14:00:05,391 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~a~0#1_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_6|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_6| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) is different from true [2021-11-23 14:00:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:00:05,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 14:00:05,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16963256] [2021-11-23 14:00:05,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16963256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 14:00:05,394 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:00:05,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-23 14:00:05,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014566222] [2021-11-23 14:00:05,396 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 14:00:05,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 14:00:05,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 14:00:05,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 14:00:05,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=13, Unknown=7, NotChecked=36, Total=72 [2021-11-23 14:00:05,459 INFO L87 Difference]: Start difference. First operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 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) Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:00:07,597 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~a~0#1_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_6|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_6| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-23 14:00:09,638 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~a~0#1_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_6|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_6| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 14:00:13,078 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) (= |c_ULTIMATE.start_main_~r~0#1| (_ bv0 32)) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 14:00:51,383 WARN L227 SmtUtils]: Spent 35.62s on a formula simplification. DAG size of input: 28 DAG size of output: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:00:53,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 14:00:55,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 14:00:56,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:00:56,464 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-11-23 14:00:56,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:00:56,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 14:00:56,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:00:56,473 INFO L225 Difference]: With dead ends: 35 [2021-11-23 14:00:56,473 INFO L226 Difference]: Without dead ends: 16 [2021-11-23 14:00:56,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 65.0s TimeCoverageRelationStatistics Valid=23, Invalid=20, Unknown=11, NotChecked=78, Total=132 [2021-11-23 14:00:56,482 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:00:56,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 36 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 60 Unchecked, 5.2s Time] [2021-11-23 14:00:56,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-23 14:00:56,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-23 14:00:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 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) [2021-11-23 14:00:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-23 14:00:56,508 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2021-11-23 14:00:56,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:00:56,508 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-23 14:00:56,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:00:56,509 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-23 14:00:56,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 14:00:56,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:00:56,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:00:56,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 14:00:56,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 14:00:56,716 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:00:56,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:00:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1806863068, now seen corresponding path program 1 times [2021-11-23 14:00:56,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 14:00:56,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287552553] [2021-11-23 14:00:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:00:56,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 14:00:56,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 14:00:56,739 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 14:00:56,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 14:00:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:00:57,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 14:00:57,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:00:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:00:57,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:00:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:00:57,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 14:00:57,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287552553] [2021-11-23 14:00:57,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287552553] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 14:00:57,355 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:00:57,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 14:00:57,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290433944] [2021-11-23 14:00:57,356 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 14:00:57,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:00:57,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 14:00:57,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:00:57,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:00:57,358 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:00,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 14:01:00,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:00,732 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-23 14:01:00,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:00,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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 7 [2021-11-23 14:01:00,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:00,734 INFO L225 Difference]: With dead ends: 20 [2021-11-23 14:01:00,734 INFO L226 Difference]: Without dead ends: 16 [2021-11-23 14:01:00,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:01:00,736 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:00,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2021-11-23 14:01:00,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-23 14:01:00,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-23 14:01:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-11-23 14:01:00,740 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 7 [2021-11-23 14:01:00,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:00,741 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-23 14:01:00,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-11-23 14:01:00,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 14:01:00,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:00,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:01:00,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 14:01:00,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 14:01:00,943 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash 852617491, now seen corresponding path program 1 times [2021-11-23 14:01:00,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 14:01:00,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850071440] [2021-11-23 14:01:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:00,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 14:01:00,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 14:01:00,946 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 14:01:00,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 14:01:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:01,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 14:01:01,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:01:20,004 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse0)) (and .cse0 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))))) is different from false [2021-11-23 14:01:22,060 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse0)) (and .cse0 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))))) is different from true [2021-11-23 14:01:28,229 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2021-11-23 14:01:30,281 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2021-11-23 14:01:46,747 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~r~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~a~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) |ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) currentRoundingMode |ULTIMATE.start_main_~r~0#1|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)))) is different from false [2021-11-23 14:01:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:46,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:02:09,476 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32))) is different from false [2021-11-23 14:02:11,535 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32))) is different from true [2021-11-23 14:02:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:11,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 14:02:11,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850071440] [2021-11-23 14:02:11,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850071440] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:11,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:11,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-23 14:02:11,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200176284] [2021-11-23 14:02:11,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:11,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 14:02:11,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 14:02:11,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 14:02:11,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=4, Unknown=7, NotChecked=20, Total=42 [2021-11-23 14:02:11,556 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:13,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 14:02:15,870 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (.cse1 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)))) (and (or (and .cse0 (not .cse1)) (and .cse1 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)))) (or .cse0 .cse1))) is different from false [2021-11-23 14:02:17,926 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (.cse1 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)))) (and (or (and .cse0 (not .cse1)) (and .cse1 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)))) (or .cse0 .cse1))) is different from true [2021-11-23 14:02:19,983 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~r~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~a~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) |ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) currentRoundingMode |ULTIMATE.start_main_~r~0#1|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)))) is different from false [2021-11-23 14:02:19,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:19,996 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-11-23 14:02:19,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:02:19,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 14:02:19,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:19,997 INFO L225 Difference]: With dead ends: 20 [2021-11-23 14:02:19,997 INFO L226 Difference]: Without dead ends: 16 [2021-11-23 14:02:19,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=15, Invalid=5, Unknown=10, NotChecked=42, Total=72 [2021-11-23 14:02:19,999 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:20,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 30 Unchecked, 2.2s Time] [2021-11-23 14:02:20,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-23 14:02:20,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-23 14:02:20,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:20,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-23 14:02:20,008 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2021-11-23 14:02:20,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:20,008 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-23 14:02:20,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-23 14:02:20,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 14:02:20,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:20,009 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:20,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:20,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 14:02:20,210 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:02:20,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:20,210 INFO L85 PathProgramCache]: Analyzing trace with hash 662417944, now seen corresponding path program 1 times [2021-11-23 14:02:20,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 14:02:20,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26603054] [2021-11-23 14:02:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:20,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 14:02:20,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 14:02:20,212 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 14:02:20,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 14:02:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 14:02:23,938 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 14:02:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 14:02:31,186 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-23 14:02:31,187 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 14:02:31,188 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-23 14:02:31,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-23 14:02:31,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:31,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 14:02:31,394 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-23 14:02:31,397 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 14:02:31,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:02:31 BoogieIcfgContainer [2021-11-23 14:02:31,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 14:02:31,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 14:02:31,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 14:02:31,425 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 14:02:31,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:14" (3/4) ... [2021-11-23 14:02:31,427 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 14:02:31,466 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 14:02:31,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 14:02:31,467 INFO L158 Benchmark]: Toolchain (without parser) took 202369.39ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 45.6MB in the beginning and 40.1MB in the end (delta: 5.5MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2021-11-23 14:02:31,467 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 65.0MB. Free memory was 46.9MB in the beginning and 46.8MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 14:02:31,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.06ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 49.3MB in the end (delta: -3.8MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-23 14:02:31,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.94ms. Allocated memory is still 65.0MB. Free memory was 49.3MB in the beginning and 47.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 14:02:31,469 INFO L158 Benchmark]: Boogie Preprocessor took 55.75ms. Allocated memory is still 65.0MB. Free memory was 47.6MB in the beginning and 46.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 14:02:31,469 INFO L158 Benchmark]: RCFGBuilder took 4836.45ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 37.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 14:02:31,470 INFO L158 Benchmark]: TraceAbstraction took 196981.58ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 37.1MB in the beginning and 42.1MB in the end (delta: -5.0MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2021-11-23 14:02:31,470 INFO L158 Benchmark]: Witness Printer took 41.99ms. Allocated memory is still 88.1MB. Free memory was 42.1MB in the beginning and 40.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 14:02:31,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 65.0MB. Free memory was 46.9MB in the beginning and 46.8MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.06ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 49.3MB in the end (delta: -3.8MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.94ms. Allocated memory is still 65.0MB. Free memory was 49.3MB in the beginning and 47.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.75ms. Allocated memory is still 65.0MB. Free memory was 47.6MB in the beginning and 46.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 4836.45ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 37.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 196981.58ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 37.1MB in the beginning and 42.1MB in the end (delta: -5.0MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * Witness Printer took 41.99ms. Allocated memory is still 88.1MB. Free memory was 42.1MB in the beginning and 40.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [a=10133236602633510, counter=0, r=0, x=5066618301316755] [L32] EXPR counter++ VAL [a=10133236602633510, counter=1, counter++=0, r=0, x=5066618301316755] [L32] COND TRUE counter++<50 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) [L17] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L33] RET __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [a=10133236602633510, counter=1, r=1, x=5066618301316755] [L32] EXPR counter++ VAL [a=10133236602633510, counter=2, counter++=1, r=1, x=5066618301316755] [L32] COND TRUE counter++<50 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=2] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=2] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 196.9s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 62.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 10.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 108 SdHoareTripleChecker+Invalid, 10.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 90 IncrementalHoareTripleChecker+Unchecked, 73 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 35 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 85.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 6.7s SatisfiabilityAnalysisTime, 118.9s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 4 QuantifiedInterpolants, 520 SizeOfPredicates, 13 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 proved your program to be incorrect! [2021-11-23 14:02:31,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5ba3a5-02ac-4f77-b9ca-ab8318cedfa6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE