./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be --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 4582c3eb38d182065b024eaa1ecbc8cf3ce1cd8f100c8eebac06484d412900d6 .................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be --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 4582c3eb38d182065b024eaa1ecbc8cf3ce1cd8f100c8eebac06484d412900d6 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:19:54,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:19:54,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:19:54,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:19:54,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:19:54,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:19:54,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:19:54,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:19:54,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:19:54,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:19:54,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:19:54,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:19:54,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:19:54,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:19:54,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:19:54,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:19:54,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:19:54,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:19:54,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:19:54,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:19:54,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:19:54,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:19:54,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:19:54,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:19:54,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:19:54,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:19:54,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:19:54,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:19:54,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:19:54,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:19:54,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:19:54,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:19:54,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:19:54,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:19:54,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:19:54,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:19:54,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:19:54,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:19:54,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:19:54,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:19:54,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:19:54,507 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:19:54,557 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:19:54,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:19:54,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:19:54,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:19:54,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:19:54,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:19:54,569 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:19:54,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:19:54,570 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:19:54,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:19:54,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:19:54,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:19:54,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:19:54,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:19:54,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:19:54,574 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:19:54,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:19:54,574 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:19:54,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:19:54,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:19:54,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:19:54,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:19:54,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:19:54,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:19:54,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:19:54,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:19:54,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:19:54,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:19:54,578 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:19:54,580 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:19:54,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:19:54,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:19:54,581 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_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4582c3eb38d182065b024eaa1ecbc8cf3ce1cd8f100c8eebac06484d412900d6 [2021-10-21 19:19:54,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:19:54,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:19:54,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:19:54,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:19:54,963 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:19:54,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2021-10-21 19:19:55,053 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/data/d02617cc6/9fee6e1734034be0a74a523f2e33cb80/FLAG7b1a33807 [2021-10-21 19:19:55,690 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:19:55,690 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2021-10-21 19:19:55,704 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/data/d02617cc6/9fee6e1734034be0a74a523f2e33cb80/FLAG7b1a33807 [2021-10-21 19:19:56,034 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/data/d02617cc6/9fee6e1734034be0a74a523f2e33cb80 [2021-10-21 19:19:56,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:19:56,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:19:56,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:19:56,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:19:56,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:19:56,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:19:56" (1/1) ... [2021-10-21 19:19:56,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e1027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:56, skipping insertion in model container [2021-10-21 19:19:56,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:19:56" (1/1) ... [2021-10-21 19:19:56,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:19:56,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:19:56,300 WARN L228 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_34717cdb-eab6-4a4e-9202-6837cdaac3bb/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2021-10-21 19:19:56,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:19:56,324 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:19:56,342 WARN L228 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_34717cdb-eab6-4a4e-9202-6837cdaac3bb/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2021-10-21 19:19:56,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:19:56,358 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:19:56,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:56 WrapperNode [2021-10-21 19:19:56,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:19:56,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:19:56,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:19:56,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:19:56,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:56" (1/1) ... [2021-10-21 19:19:56,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:56" (1/1) ... [2021-10-21 19:19:56,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:19:56,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:19:56,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:19:56,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:19:56,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:56" (1/1) ... [2021-10-21 19:19:56,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:56" (1/1) ... [2021-10-21 19:19:56,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:56" (1/1) ... [2021-10-21 19:19:56,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:56" (1/1) ... [2021-10-21 19:19:56,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:56" (1/1) ... [2021-10-21 19:19:56,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:56" (1/1) ... [2021-10-21 19:19:56,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:56" (1/1) ... [2021-10-21 19:19:56,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:19:56,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:19:56,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:19:56,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:19:56,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:56" (1/1) ... [2021-10-21 19:19:56,442 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:19:56,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:56,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:19:56,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:19:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:19:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:19:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:19:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:19:56,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:19:56,838 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 19:19:56,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:56 BoogieIcfgContainer [2021-10-21 19:19:56,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:19:56,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:19:56,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:19:56,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:19:56,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:19:56" (1/3) ... [2021-10-21 19:19:56,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a6a513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:19:56, skipping insertion in model container [2021-10-21 19:19:56,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:56" (2/3) ... [2021-10-21 19:19:56,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a6a513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:19:56, skipping insertion in model container [2021-10-21 19:19:56,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:56" (3/3) ... [2021-10-21 19:19:56,857 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div_bad.i.p+cfa-reducer.c [2021-10-21 19:19:56,864 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:19:56,865 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:19:56,931 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:19:56,940 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 [2021-10-21 19:19:56,941 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:19:56,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 19:19:56,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:56,964 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 19:19:56,964 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:19:56,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:56,973 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2021-10-21 19:19:56,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:56,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285839975] [2021-10-21 19:19:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:56,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:19:57,124 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:19:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:19:57,226 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:19:57,229 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:19:57,230 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:19:57,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:19:57,243 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:19:57,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:19:57 BoogieIcfgContainer [2021-10-21 19:19:57,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:19:57,277 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:19:57,277 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:19:57,277 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:19:57,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:56" (3/4) ... [2021-10-21 19:19:57,281 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:19:57,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:19:57,285 INFO L168 Benchmark]: Toolchain (without parser) took 1243.97 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 60.6 MB in the beginning and 103.5 MB in the end (delta: -42.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:57,286 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 76.8 MB in the beginning and 76.8 MB in the end (delta: 51.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:57,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.76 ms. Allocated memory is still 98.6 MB. Free memory was 60.4 MB in the beginning and 76.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:57,288 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.62 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 74.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:57,290 INFO L168 Benchmark]: Boogie Preprocessor took 24.69 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 73.8 MB in the end (delta: 908.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:57,291 INFO L168 Benchmark]: RCFGBuilder took 412.79 ms. Allocated memory is still 98.6 MB. Free memory was 73.6 MB in the beginning and 64.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:57,298 INFO L168 Benchmark]: TraceAbstraction took 431.63 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 64.4 MB in the beginning and 104.0 MB in the end (delta: -39.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:57,299 INFO L168 Benchmark]: Witness Printer took 5.20 ms. Allocated memory is still 127.9 MB. Free memory is still 104.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:57,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 76.8 MB in the beginning and 76.8 MB in the end (delta: 51.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.76 ms. Allocated memory is still 98.6 MB. Free memory was 60.4 MB in the beginning and 76.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.62 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 74.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.69 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 73.8 MB in the end (delta: 908.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 412.79 ms. Allocated memory is still 98.6 MB. Free memory was 73.6 MB in the beginning and 64.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 431.63 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 64.4 MB in the beginning and 104.0 MB in the end (delta: -39.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.20 ms. Allocated memory is still 127.9 MB. Free memory is still 104.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L9] float main__x = 1.0; [L10] float main__x1 = main__x / 1.600000023841858; VAL [__return_main=0] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L27] reach_error() VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 312.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.9ms SsaConstructionTime, 55.9ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-21 19:19:57,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:20:00,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:20:00,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:20:00,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:20:00,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:20:00,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:20:00,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:20:00,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:20:00,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:20:00,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:20:00,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:20:00,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:20:00,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:20:00,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:20:00,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:20:00,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:20:00,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:20:00,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:20:00,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:20:00,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:20:00,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:20:00,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:20:00,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:20:00,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:20:00,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:20:00,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:20:00,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:20:00,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:20:00,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:20:00,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:20:00,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:20:00,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:20:00,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:20:00,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:20:00,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:20:00,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:20:00,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:20:00,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:20:00,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:20:00,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:20:00,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:20:00,184 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 19:20:00,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:20:00,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:20:00,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:20:00,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:20:00,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:20:00,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:20:00,230 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:20:00,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:20:00,231 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:20:00,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:20:00,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:20:00,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:20:00,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:20:00,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:20:00,232 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:20:00,233 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:20:00,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:20:00,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:20:00,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:20:00,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:20:00,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:20:00,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:20:00,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:20:00,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:20:00,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:20:00,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:20:00,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:20:00,235 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:20:00,236 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:20:00,236 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:20:00,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:20:00,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:20:00,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:20:00,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:20:00,237 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_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4582c3eb38d182065b024eaa1ecbc8cf3ce1cd8f100c8eebac06484d412900d6 [2021-10-21 19:20:00,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:20:00,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:20:00,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:20:00,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:20:00,684 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:20:00,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2021-10-21 19:20:00,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/data/f9e08e004/9f0e814f0568479facb1904f515cd228/FLAG348463a70 [2021-10-21 19:20:01,360 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:20:01,361 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2021-10-21 19:20:01,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/data/f9e08e004/9f0e814f0568479facb1904f515cd228/FLAG348463a70 [2021-10-21 19:20:01,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/data/f9e08e004/9f0e814f0568479facb1904f515cd228 [2021-10-21 19:20:01,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:20:01,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:20:01,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:20:01,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:20:01,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:20:01,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:20:01" (1/1) ... [2021-10-21 19:20:01,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@83ca6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:01, skipping insertion in model container [2021-10-21 19:20:01,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:20:01" (1/1) ... [2021-10-21 19:20:01,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:20:01,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:20:02,016 WARN L228 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_34717cdb-eab6-4a4e-9202-6837cdaac3bb/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2021-10-21 19:20:02,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:20:02,045 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:20:02,069 WARN L228 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_34717cdb-eab6-4a4e-9202-6837cdaac3bb/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2021-10-21 19:20:02,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:20:02,096 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:20:02,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:02 WrapperNode [2021-10-21 19:20:02,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:20:02,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:20:02,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:20:02,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:20:02,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:02" (1/1) ... [2021-10-21 19:20:02,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:02" (1/1) ... [2021-10-21 19:20:02,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:20:02,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:20:02,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:20:02,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:20:02,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:02" (1/1) ... [2021-10-21 19:20:02,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:02" (1/1) ... [2021-10-21 19:20:02,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:02" (1/1) ... [2021-10-21 19:20:02,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:02" (1/1) ... [2021-10-21 19:20:02,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:02" (1/1) ... [2021-10-21 19:20:02,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:02" (1/1) ... [2021-10-21 19:20:02,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:02" (1/1) ... [2021-10-21 19:20:02,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:20:02,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:20:02,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:20:02,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:20:02,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:02" (1/1) ... [2021-10-21 19:20:02,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:20:02,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:20:02,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:20:02,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:20:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:20:02,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:20:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:20:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:20:06,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:20:06,914 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 19:20:06,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:20:06 BoogieIcfgContainer [2021-10-21 19:20:06,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:20:06,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:20:06,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:20:06,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:20:06,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:20:01" (1/3) ... [2021-10-21 19:20:06,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2055265c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:20:06, skipping insertion in model container [2021-10-21 19:20:06,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:02" (2/3) ... [2021-10-21 19:20:06,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2055265c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:20:06, skipping insertion in model container [2021-10-21 19:20:06,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:20:06" (3/3) ... [2021-10-21 19:20:06,927 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div_bad.i.p+cfa-reducer.c [2021-10-21 19:20:06,933 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:20:06,933 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:20:06,988 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:20:06,996 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 [2021-10-21 19:20:06,996 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:20:07,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 19:20:07,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:20:07,018 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 19:20:07,018 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:20:07,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:20:07,025 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2021-10-21 19:20:07,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:20:07,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477739404] [2021-10-21 19:20:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:20:07,039 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:20:07,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:20:07,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:20:07,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:20:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:20:08,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:20:08,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:20:14,969 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0) ((_ to_fp 11 53) roundNearestTiesToEven (/ 800000011920929.0 500000000000000.0)))) c_ULTIMATE.start_main_~main__x1~0) (= c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) is different from true [2021-10-21 19:20:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:20:14,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:20:21,483 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) .cse0))) is different from false [2021-10-21 19:20:23,613 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) .cse0))) is different from true [2021-10-21 19:20:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:20:23,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:20:23,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477739404] [2021-10-21 19:20:23,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477739404] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:20:23,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:20:23,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-21 19:20:23,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488347913] [2021-10-21 19:20:23,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:20:23,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:20:23,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:20:23,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=8, Unknown=3, NotChecked=10, Total=30 [2021-10-21 19:20:23,639 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:25,793 WARN L860 $PredicateComparison]: unable to prove that (and (not (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:20:27,934 WARN L860 $PredicateComparison]: unable to prove that (and (not (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0)) (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0) ((_ to_fp 11 53) roundNearestTiesToEven (/ 800000011920929.0 500000000000000.0)))) c_ULTIMATE.start_main_~main__x1~0) (= c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) is different from true [2021-10-21 19:20:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:20:32,579 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-10-21 19:20:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:20:32,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-21 19:20:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:20:32,587 INFO L225 Difference]: With dead ends: 16 [2021-10-21 19:20:32,587 INFO L226 Difference]: Without dead ends: 7 [2021-10-21 19:20:32,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10739.0ms TimeCoverageRelationStatistics Valid=13, Invalid=10, Unknown=5, NotChecked=28, Total=56 [2021-10-21 19:20:32,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-21 19:20:32,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-21 19:20:32,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2021-10-21 19:20:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-21 19:20:32,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-21 19:20:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:20:32,624 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-21 19:20:32,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-21 19:20:32,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 19:20:32,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:20:32,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:20:32,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:20:32,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:20:32,850 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:20:32,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:20:32,851 INFO L82 PathProgramCache]: Analyzing trace with hash 889537510, now seen corresponding path program 1 times [2021-10-21 19:20:32,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:20:32,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422352317] [2021-10-21 19:20:32,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:20:32,852 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:20:32,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:20:32,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:20:32,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:20:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:20:34,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:20:34,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:20:38,988 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:20:44,741 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 800000011920929.0 500000000000000.0)))) (and (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) .cse0)) c_ULTIMATE.start_main_~main__x~0) (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0) .cse0)) c_ULTIMATE.start_main_~main__x1~0))) is different from true [2021-10-21 19:20:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-21 19:20:44,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:20:51,336 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) c_ULTIMATE.start_main_~main__x1~0)) is different from false [2021-10-21 19:20:53,509 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) c_ULTIMATE.start_main_~main__x1~0)) is different from true [2021-10-21 19:21:00,386 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)))) is different from false [2021-10-21 19:21:02,692 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)))) is different from true [2021-10-21 19:21:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-21 19:21:02,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:21:02,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422352317] [2021-10-21 19:21:02,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422352317] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:21:02,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:21:02,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-21 19:21:02,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284251969] [2021-10-21 19:21:02,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:21:02,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:21:02,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:21:02,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=9, Unknown=6, NotChecked=28, Total=56 [2021-10-21 19:21:02,697 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:05,030 WARN L860 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:21:07,357 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse0)) c_ULTIMATE.start_main_~main__x1~0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 19:21:09,515 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 800000011920929.0 500000000000000.0)))) (and (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) .cse0)) c_ULTIMATE.start_main_~main__x~0) (not (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0)) (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0) .cse0)) c_ULTIMATE.start_main_~main__x1~0))) is different from true [2021-10-21 19:21:14,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:14,164 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-21 19:21:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:21:14,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 19:21:14,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:14,166 INFO L225 Difference]: With dead ends: 11 [2021-10-21 19:21:14,166 INFO L226 Difference]: Without dead ends: 8 [2021-10-21 19:21:14,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20108.5ms TimeCoverageRelationStatistics Valid=19, Invalid=12, Unknown=9, NotChecked=70, Total=110 [2021-10-21 19:21:14,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-21 19:21:14,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-21 19:21:14,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-21 19:21:14,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-21 19:21:14,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:14,172 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-21 19:21:14,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:14,172 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-21 19:21:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:21:14,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:14,172 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-21 19:21:14,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-21 19:21:14,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:21:14,373 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:14,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:14,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1805796550, now seen corresponding path program 2 times [2021-10-21 19:21:14,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:21:14,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286902426] [2021-10-21 19:21:14,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:21:14,396 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:21:14,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:21:14,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:21:14,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:21:17,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:21:17,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:21:17,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:21:17,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:22,533 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:21:27,799 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 19:21:30,141 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0))) c_ULTIMATE.start_main_~main__x1~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:21:40,721 WARN L207 SmtUtils]: Spent 5.95 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 19:21:43,193 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (= ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0)) c_ULTIMATE.start_main_~main__x~0) (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 19:21:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-21 19:21:43,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:21:53,150 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-10-21 19:21:55,312 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-10-21 19:22:05,560 WARN L207 SmtUtils]: Spent 5.26 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:22:07,936 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse1)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-10-21 19:22:10,264 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse1)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-21 19:22:15,824 WARN L207 SmtUtils]: Spent 5.55 s on a formula simplification that was a NOOP. DAG size: 17 [2021-10-21 19:22:21,716 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:22:24,195 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1))) .cse1)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-10-21 19:22:26,658 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1))) .cse1)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-21 19:22:26,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-21 19:22:26,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:26,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286902426] [2021-10-21 19:22:26,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286902426] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:22:26,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:22:26,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-21 19:22:26,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229124861] [2021-10-21 19:22:26,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:22:26,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:26,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:22:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=16, Unknown=9, NotChecked=66, Total=110 [2021-10-21 19:22:26,668 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:22:29,176 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1))) .cse1)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:22:31,665 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse0)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)) .cse1)) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2021-10-21 19:22:34,173 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse0)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)) .cse1)) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from true [2021-10-21 19:22:36,678 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (= ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0)) c_ULTIMATE.start_main_~main__x1~0) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse0)) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 19:22:39,169 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (= ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0)) c_ULTIMATE.start_main_~main__x~0) (or (fp.eq c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))) (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 19:22:43,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:43,922 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-21 19:22:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:22:43,922 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-21 19:22:43,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:43,923 INFO L225 Difference]: With dead ends: 12 [2021-10-21 19:22:43,923 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 19:22:43,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33614.9ms TimeCoverageRelationStatistics Valid=27, Invalid=19, Unknown=14, NotChecked=150, Total=210 [2021-10-21 19:22:43,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 19:22:43,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 19:22:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:22:43,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-21 19:22:43,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-10-21 19:22:43,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:43,928 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-21 19:22:43,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:22:43,928 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-21 19:22:43,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:22:43,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:43,929 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-21 19:22:43,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-21 19:22:44,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:44,150 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:22:44,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:44,151 INFO L82 PathProgramCache]: Analyzing trace with hash 145055718, now seen corresponding path program 3 times [2021-10-21 19:22:44,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:44,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093445084] [2021-10-21 19:22:44,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:22:44,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:44,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:44,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:44,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:22:48,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:22:48,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:22:48,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:22:48,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:57,240 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 14 [2021-10-21 19:23:02,523 WARN L207 SmtUtils]: Spent 5.24 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 19:23:04,853 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0))) c_ULTIMATE.start_main_~main__x1~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:23:10,826 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 19:23:13,315 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0))) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:23:19,995 WARN L207 SmtUtils]: Spent 6.64 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 19:23:27,431 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0))) .cse0))))) is different from false [2021-10-21 19:23:30,059 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0))) .cse0))))) is different from true [2021-10-21 19:23:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-10-21 19:23:30,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:23:40,336 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-10-21 19:23:42,505 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-10-21 19:23:47,531 WARN L207 SmtUtils]: Spent 5.01 s on a formula simplification that was a NOOP. DAG size: 12 [2021-10-21 19:23:52,847 WARN L207 SmtUtils]: Spent 5.32 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 19:23:55,181 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse1)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-10-21 19:23:57,530 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse1)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-21 19:24:03,661 WARN L207 SmtUtils]: Spent 6.12 s on a formula simplification that was a NOOP. DAG size: 13 [2021-10-21 19:24:09,364 WARN L207 SmtUtils]: Spent 5.70 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 19:24:11,878 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse1))) .cse1)))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0))))) is different from false [2021-10-21 19:24:14,382 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse1))) .cse1)))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0))))) is different from true [2021-10-21 19:24:21,108 WARN L207 SmtUtils]: Spent 6.72 s on a formula simplification that was a NOOP. DAG size: 18 [2021-10-21 19:24:27,527 WARN L207 SmtUtils]: Spent 6.42 s on a formula simplification that was a NOOP. DAG size: 20 [2021-10-21 19:24:30,274 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1))) .cse1))) .cse1)))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0))))) is different from false [2021-10-21 19:24:32,993 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1))) .cse1))) .cse1)))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0))))) is different from true [2021-10-21 19:24:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-10-21 19:24:32,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:24:32,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093445084] [2021-10-21 19:24:32,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093445084] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:24:32,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:24:32,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-21 19:24:32,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033483417] [2021-10-21 19:24:32,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:24:32,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:24:32,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:24:32,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=22, Unknown=12, NotChecked=98, Total=156 [2021-10-21 19:24:32,999 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:35,837 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1))) .cse1))) .cse1)))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)))))) is different from true [2021-10-21 19:24:38,591 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse0))) .cse0)))) (or (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)) .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 19:24:41,467 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (= ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0)) c_ULTIMATE.start_main_~main__x1~0) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse0)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)) .cse1)) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2021-10-21 19:24:44,215 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (= ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0)) c_ULTIMATE.start_main_~main__x1~0) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse0)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse0)) .cse1)) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from true [2021-10-21 19:24:47,023 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0) .cse0)) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0))) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 19:24:49,915 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (or (fp.eq c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))) (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0))) .cse0))))) is different from false [2021-10-21 19:24:52,696 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (or (fp.eq c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))) (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0))) .cse0))))) is different from true [2021-10-21 19:24:57,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:57,512 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-21 19:24:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:24:57,513 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-21 19:24:57,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:57,513 INFO L225 Difference]: With dead ends: 13 [2021-10-21 19:24:57,514 INFO L226 Difference]: Without dead ends: 10 [2021-10-21 19:24:57,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 56449.1ms TimeCoverageRelationStatistics Valid=34, Invalid=25, Unknown=19, NotChecked=228, Total=306 [2021-10-21 19:24:57,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-21 19:24:57,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-21 19:24:57,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-21 19:24:57,519 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-10-21 19:24:57,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:57,519 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-21 19:24:57,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-21 19:24:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:24:57,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:57,520 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-21 19:24:57,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-21 19:24:57,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:24:57,721 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:24:57,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:57,722 INFO L82 PathProgramCache]: Analyzing trace with hash 201697478, now seen corresponding path program 4 times [2021-10-21 19:24:57,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:24:57,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228503503] [2021-10-21 19:24:57,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:24:57,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:24:57,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:24:57,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:24:57,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 19:25:02,258 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:25:02,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:25:02,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:25:02,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:25:07,068 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:25:12,532 WARN L207 SmtUtils]: Spent 5.40 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 19:25:14,882 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0))) c_ULTIMATE.start_main_~main__x1~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:25:21,061 WARN L207 SmtUtils]: Spent 6.13 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 19:25:23,597 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0))) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:25:25,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:25:25,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228503503] [2021-10-21 19:25:25,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 8657 column 7: canceled [2021-10-21 19:25:25,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [178964129] [2021-10-21 19:25:25,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:25:25,759 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-21 19:25:25,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/cvc4 [2021-10-21 19:25:25,764 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-21 19:25:25,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-21 19:25:33,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:25:33,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:25:33,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:25:33,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:25:34,522 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-21 19:25:34,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-21 19:25:34,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244842884] [2021-10-21 19:25:34,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:25:34,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:25:34,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:25:34,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-21 19:25:34,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:25:34,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:28:46,468 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:28:46,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:28:47,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 19:28:47,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:28:47,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-21 19:28:47,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:28:47,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-21 19:28:47,204 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-21 19:28:47,204 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-21 19:28:47,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:28:47,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:47,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-21 19:28:47,812 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forcibly destroying the process [2021-10-21 19:28:47,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:28:47,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34717cdb-eab6-4a4e-9202-6837cdaac3bb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:28:47,866 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:28:47,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:28:47 BoogieIcfgContainer [2021-10-21 19:28:47,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:28:47,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:28:47,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:28:47,880 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:28:47,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:20:06" (3/4) ... [2021-10-21 19:28:47,885 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:28:47,885 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:28:47,886 INFO L168 Benchmark]: Toolchain (without parser) took 526136.89 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 44.9 MB in the beginning and 37.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:28:47,887 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 65.0 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:28:47,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.30 ms. Allocated memory is still 65.0 MB. Free memory was 44.7 MB in the beginning and 34.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:28:47,888 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.70 ms. Allocated memory is still 65.0 MB. Free memory was 34.9 MB in the beginning and 48.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:28:47,889 INFO L168 Benchmark]: Boogie Preprocessor took 52.99 ms. Allocated memory is still 65.0 MB. Free memory was 48.2 MB in the beginning and 47.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:28:47,890 INFO L168 Benchmark]: RCFGBuilder took 4666.52 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 37.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:28:47,891 INFO L168 Benchmark]: TraceAbstraction took 520960.06 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 37.4 MB in the beginning and 37.8 MB in the end (delta: -358.8 kB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:28:47,891 INFO L168 Benchmark]: Witness Printer took 5.39 ms. Allocated memory is still 79.7 MB. Free memory was 37.8 MB in the beginning and 37.2 MB in the end (delta: 521.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:28:47,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 65.0 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.30 ms. Allocated memory is still 65.0 MB. Free memory was 44.7 MB in the beginning and 34.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.70 ms. Allocated memory is still 65.0 MB. Free memory was 34.9 MB in the beginning and 48.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.99 ms. Allocated memory is still 65.0 MB. Free memory was 48.2 MB in the beginning and 47.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4666.52 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 37.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 520960.06 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 37.4 MB in the beginning and 37.8 MB in the end (delta: -358.8 kB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.39 ms. Allocated memory is still 79.7 MB. Free memory was 37.8 MB in the beginning and 37.2 MB in the end (delta: 521.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L9] float main__x = 1.0; [L10] float main__x1 = main__x / 1.600000023841858; [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.600000023841858 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.600000023841858 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.600000023841858 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.600000023841858 [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 [L25] COND TRUE __VERIFIER_assert__cond == 0 [L27] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 520879.1ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 11.7ms, AutomataDifference: 62217.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 30 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 18262.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 33 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 120911.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.7ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 56.2ms SsaConstructionTime, 9291.4ms SatisfiabilityAnalysisTime, 217977.4ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 831 SizeOfPredicates, 20 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/20 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 Received shutdown request...