./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0 --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 0f607249994cf0ffcacc9c07747c47cb351729bf7053d82a0bf430a6b6707eef --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:16:17,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:16:17,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:16:17,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:16:17,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:16:17,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:16:17,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:16:17,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:16:17,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:16:17,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:16:17,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:16:17,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:16:17,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:16:17,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:16:17,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:16:17,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:16:17,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:16:17,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:16:17,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:16:17,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:16:17,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:16:17,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:16:17,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:16:17,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:16:17,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:16:17,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:16:17,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:16:17,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:16:17,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:16:17,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:16:17,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:16:17,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:16:17,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:16:17,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:16:17,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:16:17,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:16:17,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:16:17,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:16:17,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:16:17,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:16:17,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:16:17,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:16:17,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:16:17,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:16:17,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:16:17,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:16:17,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:16:17,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:16:17,880 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:16:17,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:16:17,880 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:16:17,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:16:17,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:16:17,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:16:17,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:16:17,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:16:17,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:16:17,884 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:16:17,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:16:17,884 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:16:17,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:16:17,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:16:17,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:16:17,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:16:17,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:16:17,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:16:17,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:16:17,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:16:17,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:16:17,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:16:17,887 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:16:17,889 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:16:17,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:16:17,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:16:17,890 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_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f607249994cf0ffcacc9c07747c47cb351729bf7053d82a0bf430a6b6707eef [2021-11-22 16:16:18,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:16:18,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:16:18,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:16:18,200 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:16:18,201 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:16:18,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/float-benchs/filter1.c [2021-11-22 16:16:18,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/data/ef8022d35/d8d536f97bf7498bb39d2d9bdb77e22c/FLAG4e73026c6 [2021-11-22 16:16:18,839 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:16:18,841 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/sv-benchmarks/c/float-benchs/filter1.c [2021-11-22 16:16:18,854 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/data/ef8022d35/d8d536f97bf7498bb39d2d9bdb77e22c/FLAG4e73026c6 [2021-11-22 16:16:19,197 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/data/ef8022d35/d8d536f97bf7498bb39d2d9bdb77e22c [2021-11-22 16:16:19,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:16:19,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:16:19,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:16:19,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:16:19,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:16:19,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e677c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19, skipping insertion in model container [2021-11-22 16:16:19,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:16:19,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:16:19,452 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_d6096c8a-033b-4230-bfd1-7c92d7099ee5/sv-benchmarks/c/float-benchs/filter1.c[627,640] [2021-11-22 16:16:19,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:16:19,492 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:16:19,508 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_d6096c8a-033b-4230-bfd1-7c92d7099ee5/sv-benchmarks/c/float-benchs/filter1.c[627,640] [2021-11-22 16:16:19,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:16:19,536 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:16:19,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19 WrapperNode [2021-11-22 16:16:19,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:16:19,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:16:19,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:16:19,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:16:19,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,579 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2021-11-22 16:16:19,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:16:19,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:16:19,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:16:19,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:16:19,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:16:19,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:16:19,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:16:19,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:16:19,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:16:19,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:16:19,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:16:19,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:16:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:16:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:16:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:16:19,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:16:19,798 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:16:19,800 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:16:19,959 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:16:19,965 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:16:19,968 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 16:16:19,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:16:19 BoogieIcfgContainer [2021-11-22 16:16:19,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:16:19,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:16:19,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:16:19,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:16:19,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:16:19" (1/3) ... [2021-11-22 16:16:19,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df42871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:16:19, skipping insertion in model container [2021-11-22 16:16:19,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (2/3) ... [2021-11-22 16:16:19,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df42871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:16:19, skipping insertion in model container [2021-11-22 16:16:19,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:16:19" (3/3) ... [2021-11-22 16:16:19,981 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c [2021-11-22 16:16:19,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:16:19,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 16:16:20,055 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:16:20,066 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 [2021-11-22 16:16:20,067 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 16:16:20,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 16:16:20,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:20,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:20,106 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:20,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:20,113 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2021-11-22 16:16:20,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:16:20,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911793622] [2021-11-22 16:16:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:20,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:16:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:16:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:20,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:16:20,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911793622] [2021-11-22 16:16:20,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911793622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:16:20,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:16:20,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:16:20,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57385133] [2021-11-22 16:16:20,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:16:20,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 16:16:20,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:16:20,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 16:16:20,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:16:20,408 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:20,442 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2021-11-22 16:16:20,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 16:16:20,444 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 16:16:20,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:20,466 INFO L225 Difference]: With dead ends: 30 [2021-11-22 16:16:20,466 INFO L226 Difference]: Without dead ends: 12 [2021-11-22 16:16:20,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:16:20,474 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:20,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:16:20,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-22 16:16:20,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-22 16:16:20,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-11-22 16:16:20,516 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2021-11-22 16:16:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:20,517 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-11-22 16:16:20,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-11-22 16:16:20,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 16:16:20,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:20,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:20,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:16:20,521 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:20,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2021-11-22 16:16:20,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:16:20,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385246884] [2021-11-22 16:16:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:20,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:16:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 16:16:20,569 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 16:16:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 16:16:20,630 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 16:16:20,631 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 16:16:20,633 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 16:16:20,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:16:20,640 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-22 16:16:20,644 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 16:16:20,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 04:16:20 BoogieIcfgContainer [2021-11-22 16:16:20,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 16:16:20,670 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 16:16:20,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 16:16:20,680 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 16:16:20,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:16:19" (3/4) ... [2021-11-22 16:16:20,684 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 16:16:20,684 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 16:16:20,686 INFO L158 Benchmark]: Toolchain (without parser) took 1482.31ms. Allocated memory was 113.2MB in the beginning and 138.4MB in the end (delta: 25.2MB). Free memory was 83.0MB in the beginning and 113.7MB in the end (delta: -30.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:16:20,686 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:16:20,687 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.93ms. Allocated memory is still 113.2MB. Free memory was 83.0MB in the beginning and 87.6MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 16:16:20,688 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.72ms. Allocated memory is still 113.2MB. Free memory was 87.6MB in the beginning and 86.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 16:16:20,688 INFO L158 Benchmark]: Boogie Preprocessor took 45.42ms. Allocated memory is still 113.2MB. Free memory was 86.3MB in the beginning and 85.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:16:20,689 INFO L158 Benchmark]: RCFGBuilder took 344.30ms. Allocated memory is still 113.2MB. Free memory was 85.1MB in the beginning and 76.2MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 16:16:20,690 INFO L158 Benchmark]: TraceAbstraction took 695.87ms. Allocated memory was 113.2MB in the beginning and 138.4MB in the end (delta: 25.2MB). Free memory was 75.8MB in the beginning and 112.2MB in the end (delta: -36.4MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2021-11-22 16:16:20,691 INFO L158 Benchmark]: Witness Printer took 14.70ms. Allocated memory is still 138.4MB. Free memory was 112.2MB in the beginning and 113.7MB in the end (delta: -1.6MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2021-11-22 16:16:20,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.93ms. Allocated memory is still 113.2MB. Free memory was 83.0MB in the beginning and 87.6MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.72ms. Allocated memory is still 113.2MB. Free memory was 87.6MB in the beginning and 86.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.42ms. Allocated memory is still 113.2MB. Free memory was 86.3MB in the beginning and 85.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 344.30ms. Allocated memory is still 113.2MB. Free memory was 85.1MB in the beginning and 76.2MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 695.87ms. Allocated memory was 113.2MB in the beginning and 138.4MB in the end (delta: 25.2MB). Free memory was 75.8MB in the beginning and 112.2MB in the end (delta: -36.4MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * Witness Printer took 14.70ms. Allocated memory is still 138.4MB. Free memory was 112.2MB in the beginning and 113.7MB in the end (delta: -1.6MB). Peak memory consumption was 4.0MB. 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: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of to_real at line 34. Possible FailurePath: [L22] double E0, E1, S; [L23] int i; [L25] E1 = 0 [L26] S = 0 [L28] i = 0 VAL [i=0] [L28] COND TRUE i <= 1000000 [L30] E0 = __VERIFIER_nondet_double() [L31] CALL assume_abort_if_not(E0 >= -1. && E0 <= 1.) [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L31] RET assume_abort_if_not(E0 >= -1. && E0 <= 1.) [L33] COND TRUE __VERIFIER_nondet_int() [L34] S = 0 VAL [E0=49, i=0] [L39] E1 = E0 [L41] CALL __VERIFIER_assert(S >= -10000. && S <= 10000.) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 17 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2021-11-22 16:16:20,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/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_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0 --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 0f607249994cf0ffcacc9c07747c47cb351729bf7053d82a0bf430a6b6707eef --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:16:23,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:16:23,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:16:23,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:16:23,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:16:23,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:16:23,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:16:23,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:16:23,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:16:23,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:16:23,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:16:23,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:16:23,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:16:23,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:16:23,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:16:23,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:16:23,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:16:23,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:16:23,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:16:23,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:16:23,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:16:23,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:16:23,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:16:23,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:16:23,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:16:23,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:16:23,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:16:23,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:16:23,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:16:23,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:16:23,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:16:23,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:16:23,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:16:23,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:16:23,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:16:23,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:16:23,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:16:23,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:16:23,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:16:23,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:16:23,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:16:23,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-22 16:16:23,585 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:16:23,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:16:23,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:16:23,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:16:23,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:16:23,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:16:23,590 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:16:23,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:16:23,591 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:16:23,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:16:23,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:16:23,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:16:23,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:16:23,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:16:23,594 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 16:16:23,594 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 16:16:23,595 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 16:16:23,595 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:16:23,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:16:23,596 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:16:23,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:16:23,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:16:23,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:16:23,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:16:23,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:16:23,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:16:23,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:16:23,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:16:23,599 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 16:16:23,600 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 16:16:23,600 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:16:23,600 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:16:23,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:16:23,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:16:23,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 16:16:23,602 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_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f607249994cf0ffcacc9c07747c47cb351729bf7053d82a0bf430a6b6707eef [2021-11-22 16:16:24,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:16:24,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:16:24,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:16:24,061 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:16:24,066 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:16:24,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/float-benchs/filter1.c [2021-11-22 16:16:24,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/data/62a1bb031/220fe43629c44a179813651d736e8bba/FLAG0e6ce0152 [2021-11-22 16:16:24,636 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:16:24,636 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/sv-benchmarks/c/float-benchs/filter1.c [2021-11-22 16:16:24,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/data/62a1bb031/220fe43629c44a179813651d736e8bba/FLAG0e6ce0152 [2021-11-22 16:16:25,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/data/62a1bb031/220fe43629c44a179813651d736e8bba [2021-11-22 16:16:25,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:16:25,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:16:25,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:16:25,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:16:25,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:16:25,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:16:25" (1/1) ... [2021-11-22 16:16:25,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70be1748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:25, skipping insertion in model container [2021-11-22 16:16:25,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:16:25" (1/1) ... [2021-11-22 16:16:25,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:16:25,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:16:25,281 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_d6096c8a-033b-4230-bfd1-7c92d7099ee5/sv-benchmarks/c/float-benchs/filter1.c[627,640] [2021-11-22 16:16:25,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:16:25,332 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:16:25,350 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_d6096c8a-033b-4230-bfd1-7c92d7099ee5/sv-benchmarks/c/float-benchs/filter1.c[627,640] [2021-11-22 16:16:25,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:16:25,386 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:16:25,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:25 WrapperNode [2021-11-22 16:16:25,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:16:25,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:16:25,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:16:25,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:16:25,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:25" (1/1) ... [2021-11-22 16:16:25,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:25" (1/1) ... [2021-11-22 16:16:25,454 INFO L137 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2021-11-22 16:16:25,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:16:25,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:16:25,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:16:25,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:16:25,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:25" (1/1) ... [2021-11-22 16:16:25,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:25" (1/1) ... [2021-11-22 16:16:25,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:25" (1/1) ... [2021-11-22 16:16:25,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:25" (1/1) ... [2021-11-22 16:16:25,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:25" (1/1) ... [2021-11-22 16:16:25,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:25" (1/1) ... [2021-11-22 16:16:25,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:25" (1/1) ... [2021-11-22 16:16:25,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:16:25,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:16:25,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:16:25,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:16:25,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:25" (1/1) ... [2021-11-22 16:16:25,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:16:25,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:16:25,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:16:25,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:16:25,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:16:25,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 16:16:25,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:16:25,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:16:25,693 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:16:25,695 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:16:27,890 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:16:27,897 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:16:27,898 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 16:16:27,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:16:27 BoogieIcfgContainer [2021-11-22 16:16:27,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:16:27,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:16:27,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:16:27,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:16:27,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:16:25" (1/3) ... [2021-11-22 16:16:27,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141a71f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:16:27, skipping insertion in model container [2021-11-22 16:16:27,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:25" (2/3) ... [2021-11-22 16:16:27,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141a71f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:16:27, skipping insertion in model container [2021-11-22 16:16:27,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:16:27" (3/3) ... [2021-11-22 16:16:27,909 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c [2021-11-22 16:16:27,915 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:16:27,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 16:16:27,967 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:16:27,975 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 [2021-11-22 16:16:27,975 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 16:16:27,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 16:16:27,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:27,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:27,996 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:28,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:28,002 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2021-11-22 16:16:28,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:16:28,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466429534] [2021-11-22 16:16:28,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:28,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:16:28,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:16:28,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:16:28,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 16:16:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:16:28,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-22 16:16:28,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:16:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:28,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:16:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:28,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:16:28,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466429534] [2021-11-22 16:16:28,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466429534] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:16:28,207 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:16:28,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 16:16:28,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13124464] [2021-11-22 16:16:28,210 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:16:28,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 16:16:28,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:16:28,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 16:16:28,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:16:28,254 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:28,269 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2021-11-22 16:16:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 16:16:28,271 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 16:16:28,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:28,279 INFO L225 Difference]: With dead ends: 30 [2021-11-22 16:16:28,280 INFO L226 Difference]: Without dead ends: 12 [2021-11-22 16:16:28,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:16:28,287 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:28,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:16:28,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-22 16:16:28,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-22 16:16:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:28,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-11-22 16:16:28,321 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2021-11-22 16:16:28,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:28,322 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-11-22 16:16:28,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:28,322 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-11-22 16:16:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 16:16:28,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:28,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:28,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 16:16:28,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:16:28,537 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2021-11-22 16:16:28,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:16:28,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418472221] [2021-11-22 16:16:28,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:28,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:16:28,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:16:28,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:16:28,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 16:16:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:16:28,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 16:16:28,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:16:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:28,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:16:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:28,964 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:16:28,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418472221] [2021-11-22 16:16:28,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418472221] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:16:28,965 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:16:28,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 16:16:28,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583353955] [2021-11-22 16:16:28,966 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:16:28,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:16:28,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:16:28,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:16:28,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:16:28,969 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:31,964 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-11-22 16:16:31,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 16:16:31,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 16:16:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:31,966 INFO L225 Difference]: With dead ends: 30 [2021-11-22 16:16:31,966 INFO L226 Difference]: Without dead ends: 28 [2021-11-22 16:16:31,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:16:31,969 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:31,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 41 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-22 16:16:31,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-22 16:16:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 14. [2021-11-22 16:16:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-22 16:16:31,976 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2021-11-22 16:16:31,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:31,977 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-22 16:16:31,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-22 16:16:31,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 16:16:31,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:31,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:32,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 16:16:32,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:16:32,195 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:32,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:32,196 INFO L85 PathProgramCache]: Analyzing trace with hash -274941459, now seen corresponding path program 1 times [2021-11-22 16:16:32,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:16:32,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114168236] [2021-11-22 16:16:32,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:32,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:16:32,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:16:32,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:16:32,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 16:16:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:16:32,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 16:16:32,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:16:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:33,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:16:44,134 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2021-11-22 16:16:46,177 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2021-11-22 16:17:08,861 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1)))) is different from false [2021-11-22 16:17:10,908 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1)))) is different from true [2021-11-22 16:17:54,416 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~E0~0#1_6| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_6| (fp.neg .cse0))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |v_ULTIMATE.start_main_~E0~0#1_6|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse1 (fp.neg .cse2)) (fp.leq .cse1 .cse2))) (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_6| .cse0))))) is different from true [2021-11-22 16:17:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:17:54,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:17:54,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114168236] [2021-11-22 16:17:54,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114168236] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:17:54,474 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:17:54,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-22 16:17:54,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556430440] [2021-11-22 16:17:54,475 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:17:54,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 16:17:54,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:17:54,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 16:17:54,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=60, Unknown=5, NotChecked=54, Total=156 [2021-11-22 16:17:54,477 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 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) [2021-11-22 16:17:56,572 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (forall ((|v_ULTIMATE.start_main_~E0~0#1_6| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_6| (fp.neg .cse0))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |v_ULTIMATE.start_main_~E0~0#1_6|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse1 (fp.neg .cse2)) (fp.leq .cse1 .cse2))) (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_6| .cse0))))) (= |c_ULTIMATE.start_main_~E1~0#1| .cse3) (= .cse3 |c_ULTIMATE.start_main_~S~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-22 16:17:58,633 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)))) (and (= |c_ULTIMATE.start_main_~E1~0#1| .cse0) (= .cse0 |c_ULTIMATE.start_main_~S~0#1|) (or .cse1 (let ((.cse2 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse2 (fp.neg .cse3)) (fp.leq .cse2 .cse3)))) (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse4 (fp.geq |c_ULTIMATE.start_main_~E0~0#1| (fp.neg .cse6))) (.cse5 (fp.leq |c_ULTIMATE.start_main_~E0~0#1| .cse6))) (or (and .cse4 .cse5 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and .cse1 (or (not .cse4) (not .cse5)))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-22 16:18:00,988 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq |c_ULTIMATE.start_main_~E0~0#1| (fp.neg .cse0)) (fp.leq |c_ULTIMATE.start_main_~E0~0#1| .cse0) (fp.geq .cse1 (fp.neg .cse2)) (= |c_ULTIMATE.start_main_~E1~0#1| .cse3) (= .cse3 |c_ULTIMATE.start_main_~S~0#1|) (fp.leq .cse1 .cse2) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-22 16:18:03,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 16:18:05,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 16:18:05,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:18:05,507 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-11-22 16:18:05,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 16:18:05,508 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 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) Word has length 9 [2021-11-22 16:18:05,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:18:05,509 INFO L225 Difference]: With dead ends: 32 [2021-11-22 16:18:05,509 INFO L226 Difference]: Without dead ends: 30 [2021-11-22 16:18:05,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=62, Invalid=110, Unknown=8, NotChecked=162, Total=342 [2021-11-22 16:18:05,512 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-22 16:18:05,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 64 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 2 Unknown, 89 Unchecked, 4.4s Time] [2021-11-22 16:18:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-22 16:18:05,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 18. [2021-11-22 16:18:05,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:18:05,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-11-22 16:18:05,520 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2021-11-22 16:18:05,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:18:05,520 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-11-22 16:18:05,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 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) [2021-11-22 16:18:05,521 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-11-22 16:18:05,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 16:18:05,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:18:05,522 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:18:05,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 16:18:05,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:18:05,726 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:18:05,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:18:05,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1443795685, now seen corresponding path program 1 times [2021-11-22 16:18:05,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:18:05,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493662015] [2021-11-22 16:18:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:18:05,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:18:05,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:18:05,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:18:05,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 16:18:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:18:06,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 16:18:06,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:20:38,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:54,673 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2021-11-22 16:20:56,717 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2021-11-22 16:21:19,634 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1)))) is different from false [2021-11-22 16:21:21,681 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1)))) is different from true [2021-11-22 16:22:05,273 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~E0~0#1_8| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_8| .cse0)) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_8| (fp.neg .cse0))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |v_ULTIMATE.start_main_~E0~0#1_8|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.leq .cse1 .cse2) (fp.geq .cse1 (fp.neg .cse2))))))) is different from true [2021-11-22 16:24:53,392 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~E0~0#1_8| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_8| .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |v_ULTIMATE.start_main_~E0~0#1_8|) |c_ULTIMATE.start_main_~E0~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.leq .cse1 .cse2) (fp.geq .cse1 (fp.neg .cse2)))) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_8| (fp.neg .cse0)))))) is different from true [2021-11-22 16:25:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-22 16:25:38,104 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:25:38,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493662015] [2021-11-22 16:25:38,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493662015] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:25:38,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:25:38,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-11-22 16:25:38,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235314792] [2021-11-22 16:25:38,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:25:38,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 16:25:38,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:25:38,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 16:25:38,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=16, NotChecked=116, Total=342 [2021-11-22 16:25:38,107 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:26:00,623 WARN L227 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 16:26:03,333 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq |c_ULTIMATE.start_main_~E0~0#1| (fp.neg .cse0)) (fp.leq |c_ULTIMATE.start_main_~E0~0#1| .cse0) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) |c_ULTIMATE.start_main_~S~0#1|) (forall ((|v_ULTIMATE.start_main_~E0~0#1_8| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_8| .cse1)) (let ((.cse2 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |v_ULTIMATE.start_main_~E0~0#1_8|) |c_ULTIMATE.start_main_~E0~0#1|)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.leq .cse2 .cse3) (fp.geq .cse2 (fp.neg .cse3)))) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_8| (fp.neg .cse1)))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-22 16:26:05,713 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) |c_ULTIMATE.start_main_~S~0#1|) (fp.geq |c_ULTIMATE.start_main_~E1~0#1| (fp.neg .cse0)) (fp.leq |c_ULTIMATE.start_main_~E1~0#1| .cse0) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((|v_ULTIMATE.start_main_~E0~0#1_8| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_8| .cse1)) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_8| (fp.neg .cse1))) (let ((.cse2 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |v_ULTIMATE.start_main_~E0~0#1_8|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.leq .cse2 .cse3) (fp.geq .cse2 (fp.neg .cse3))))))))) is different from true [2021-11-22 16:26:07,960 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (.cse6 (fp.neg .cse5))) (and (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) |c_ULTIMATE.start_main_~S~0#1|) (or .cse0 (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse1 (fp.neg .cse2)) (fp.leq .cse1 .cse2)))) (let ((.cse3 (fp.geq |c_ULTIMATE.start_main_~E0~0#1| .cse6)) (.cse4 (fp.leq |c_ULTIMATE.start_main_~E0~0#1| .cse5))) (or (and .cse3 .cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and .cse0 (or (not .cse3) (not .cse4))))) (fp.geq |c_ULTIMATE.start_main_~E1~0#1| .cse6) (fp.leq |c_ULTIMATE.start_main_~E1~0#1| .cse5) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-22 16:26:11,768 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.neg .cse1)) (.cse2 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq |c_ULTIMATE.start_main_~E0~0#1| .cse0) (fp.leq |c_ULTIMATE.start_main_~E0~0#1| .cse1) (fp.geq .cse2 (fp.neg .cse3)) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) |c_ULTIMATE.start_main_~S~0#1|) (fp.geq |c_ULTIMATE.start_main_~E1~0#1| .cse0) (fp.leq .cse2 .cse3) (fp.leq |c_ULTIMATE.start_main_~E1~0#1| .cse1) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-22 16:26:25,279 WARN L227 SmtUtils]: Spent 7.07s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 16:26:33,235 WARN L227 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 36 DAG size of output: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 16:26:35,281 WARN L860 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (forall ((|v_ULTIMATE.start_main_~E0~0#1_8| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_8| .cse0)) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_8| (fp.neg .cse0))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |v_ULTIMATE.start_main_~E0~0#1_8|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.leq .cse1 .cse2) (fp.geq .cse1 (fp.neg .cse2)))))))) is different from true [2021-11-22 16:26:37,333 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)))) (and (or (forall ((|v_ULTIMATE.start_main_~E0~0#1_8| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_8| .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) |v_ULTIMATE.start_main_~E0~0#1_8|) |c_ULTIMATE.start_main_~E0~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.leq .cse1 .cse2) (fp.geq .cse1 (fp.neg .cse2)))) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_8| (fp.neg .cse0)))))) .cse3) (or .cse3 (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse5 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse4 (fp.neg .cse5)) (fp.leq .cse4 .cse5)))))) is different from false [2021-11-22 16:26:39,386 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)))) (and (or (forall ((|v_ULTIMATE.start_main_~E0~0#1_8| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_8| .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) |v_ULTIMATE.start_main_~E0~0#1_8|) |c_ULTIMATE.start_main_~E0~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.leq .cse1 .cse2) (fp.geq .cse1 (fp.neg .cse2)))) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_8| (fp.neg .cse0)))))) .cse3) (or .cse3 (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse5 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse4 (fp.neg .cse5)) (fp.leq .cse4 .cse5)))))) is different from true [2021-11-22 16:26:41,448 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (forall ((|v_ULTIMATE.start_main_~E0~0#1_8| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_8| .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) |v_ULTIMATE.start_main_~E0~0#1_8|) |c_ULTIMATE.start_main_~E0~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.leq .cse1 .cse2) (fp.geq .cse1 (fp.neg .cse2)))) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_8| (fp.neg .cse0)))))) (fp.geq .cse3 (fp.neg .cse4)) (fp.leq .cse3 .cse4))) is different from false [2021-11-22 16:26:43,503 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (forall ((|v_ULTIMATE.start_main_~E0~0#1_8| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_8| .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) |v_ULTIMATE.start_main_~E0~0#1_8|) |c_ULTIMATE.start_main_~E0~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.leq .cse1 .cse2) (fp.geq .cse1 (fp.neg .cse2)))) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_8| (fp.neg .cse0)))))) (fp.geq .cse3 (fp.neg .cse4)) (fp.leq .cse3 .cse4))) is different from true [2021-11-22 16:26:43,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:26:43,517 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2021-11-22 16:26:43,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 16:26:43,522 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-22 16:26:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:26:43,523 INFO L225 Difference]: With dead ends: 40 [2021-11-22 16:26:43,524 INFO L226 Difference]: Without dead ends: 38 [2021-11-22 16:26:43,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 131.5s TimeCoverageRelationStatistics Valid=114, Invalid=319, Unknown=31, NotChecked=528, Total=992 [2021-11-22 16:26:43,526 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:26:43,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 53 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 143 Unchecked, 0.1s Time] [2021-11-22 16:26:43,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-22 16:26:43,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 22. [2021-11-22 16:26:43,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:26:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-22 16:26:43,531 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 17 [2021-11-22 16:26:43,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:26:43,532 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-22 16:26:43,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:26:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-22 16:26:43,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 16:26:43,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:26:43,533 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:26:43,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-22 16:26:43,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:26:43,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:26:43,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:26:43,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1185630247, now seen corresponding path program 1 times [2021-11-22 16:26:43,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:26:43,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501870224] [2021-11-22 16:26:43,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:26:43,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:26:43,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:26:43,747 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:26:43,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6096c8a-033b-4230-bfd1-7c92d7099ee5/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-22 16:26:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:26:45,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-22 16:26:45,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:27:32,621 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~E0~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.neg .cse1))) (and (fp.geq |ULTIMATE.start_main_~E0~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~E0~0#1| .cse1) (fp.geq |ULTIMATE.start_main_~E1~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)))) (fp.mul c_currentRoundingMode .cse2 (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse3) |ULTIMATE.start_main_~E1~0#1|) .cse3)))) |ULTIMATE.start_main_~E0~0#1|) |ULTIMATE.start_main_~E1~0#1|) |c_ULTIMATE.start_main_~S~0#1|) (fp.leq |ULTIMATE.start_main_~E1~0#1| .cse1))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false