./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/drift_tenth.c.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_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/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_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/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_1abfd74d-c8a2-48c4-958e-666734a5c2aa/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 ee159be1ed42c29b70080447b490f7a1aeb72331afc90e5794e0e8d61cb20d74 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/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_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/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_1abfd74d-c8a2-48c4-958e-666734a5c2aa/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 ee159be1ed42c29b70080447b490f7a1aeb72331afc90e5794e0e8d61cb20d74 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:22:57,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:22:57,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:22:57,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:22:57,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:22:57,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:22:57,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:22:57,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:22:57,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:22:57,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:22:57,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:22:57,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:22:57,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:22:57,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:22:57,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:22:57,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:22:57,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:22:57,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:22:57,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:22:57,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:22:57,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:22:57,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:22:57,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:22:57,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:22:57,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:22:57,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:22:57,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:22:57,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:22:57,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:22:57,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:22:57,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:22:57,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:22:57,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:22:57,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:22:57,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:22:57,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:22:57,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:22:57,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:22:57,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:22:57,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:22:57,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:22:57,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:22:57,906 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:22:57,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:22:57,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:22:57,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:22:57,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:22:57,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:22:57,918 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:22:57,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:22:57,918 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:22:57,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:22:57,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:22:57,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:22:57,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:22:57,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:22:57,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:22:57,921 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:22:57,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:22:57,921 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:22:57,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:22:57,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:22:57,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:22:57,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:22:57,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:22:57,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:22:57,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:22:57,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:22:57,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:22:57,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:22:57,924 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:22:57,924 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:22:57,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:22:57,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:22:57,925 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_1abfd74d-c8a2-48c4-958e-666734a5c2aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee159be1ed42c29b70080447b490f7a1aeb72331afc90e5794e0e8d61cb20d74 [2021-10-21 20:22:58,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:22:58,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:22:58,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:22:58,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:22:58,262 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:22:58,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c [2021-10-21 20:22:58,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/data/08e9e99ce/99c0b016272146b3a9f6c982f4b43ace/FLAGa9cd53e93 [2021-10-21 20:22:58,913 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:22:58,914 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c [2021-10-21 20:22:58,920 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/data/08e9e99ce/99c0b016272146b3a9f6c982f4b43ace/FLAGa9cd53e93 [2021-10-21 20:22:59,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/data/08e9e99ce/99c0b016272146b3a9f6c982f4b43ace [2021-10-21 20:22:59,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:22:59,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:22:59,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:22:59,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:22:59,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:22:59,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:22:59" (1/1) ... [2021-10-21 20:22:59,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20ad018e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:59, skipping insertion in model container [2021-10-21 20:22:59,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:22:59" (1/1) ... [2021-10-21 20:22:59,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:22:59,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:22:59,463 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_1abfd74d-c8a2-48c4-958e-666734a5c2aa/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2021-10-21 20:22:59,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:22:59,477 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:22:59,492 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_1abfd74d-c8a2-48c4-958e-666734a5c2aa/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2021-10-21 20:22:59,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:22:59,513 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:22:59,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:59 WrapperNode [2021-10-21 20:22:59,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:22:59,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:22:59,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:22:59,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:22:59,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:59" (1/1) ... [2021-10-21 20:22:59,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:59" (1/1) ... [2021-10-21 20:22:59,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:22:59,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:22:59,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:22:59,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:22:59,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:59" (1/1) ... [2021-10-21 20:22:59,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:59" (1/1) ... [2021-10-21 20:22:59,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:59" (1/1) ... [2021-10-21 20:22:59,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:59" (1/1) ... [2021-10-21 20:22:59,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:59" (1/1) ... [2021-10-21 20:22:59,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:59" (1/1) ... [2021-10-21 20:22:59,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:59" (1/1) ... [2021-10-21 20:22:59,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:22:59,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:22:59,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:22:59,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:22:59,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:59" (1/1) ... [2021-10-21 20:22:59,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:22:59,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:22:59,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:22:59,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:22:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:22:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:22:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:22:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:22:59,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:22:59,929 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 20:22:59,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:22:59 BoogieIcfgContainer [2021-10-21 20:22:59,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:22:59,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:22:59,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:22:59,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:22:59,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:22:59" (1/3) ... [2021-10-21 20:22:59,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29429d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:22:59, skipping insertion in model container [2021-10-21 20:22:59,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:59" (2/3) ... [2021-10-21 20:22:59,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29429d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:22:59, skipping insertion in model container [2021-10-21 20:22:59,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:22:59" (3/3) ... [2021-10-21 20:22:59,941 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c.p+cfa-reducer.c [2021-10-21 20:22:59,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:22:59,948 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:22:59,989 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:22:59,995 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 20:22:59,996 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:23:00,009 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 20:23:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 20:23:00,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:00,020 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 20:23:00,021 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:00,033 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2021-10-21 20:23:00,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:00,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871722617] [2021-10-21 20:23:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:00,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:00,209 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 20:23:00,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:00,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871722617] [2021-10-21 20:23:00,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871722617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:23:00,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:23:00,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:23:00,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174798495] [2021-10-21 20:23:00,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:23:00,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:00,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:23:00,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:23:00,254 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 20:23:00,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:00,291 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-10-21 20:23:00,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:23:00,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 20:23:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:00,300 INFO L225 Difference]: With dead ends: 16 [2021-10-21 20:23:00,300 INFO L226 Difference]: Without dead ends: 7 [2021-10-21 20:23:00,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:23:00,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-21 20:23:00,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-21 20:23:00,330 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 20:23:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-21 20:23:00,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-21 20:23:00,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:00,332 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-21 20:23:00,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 20:23:00,333 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-21 20:23:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:23:00,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:00,335 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:23:00,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:23:00,336 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:00,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:00,337 INFO L82 PathProgramCache]: Analyzing trace with hash 889537510, now seen corresponding path program 1 times [2021-10-21 20:23:00,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:00,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076131798] [2021-10-21 20:23:00,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:00,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:00,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:00,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076131798] [2021-10-21 20:23:00,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076131798] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:00,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332371599] [2021-10-21 20:23:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:00,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:00,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:00,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:00,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:23:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:00,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:23:00,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:00,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332371599] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:00,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:00,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-21 20:23:00,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135097120] [2021-10-21 20:23:00,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:23:00,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:00,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:23:00,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:23:00,617 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 5 states, 5 states have (on average 1.6) 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 20:23:00,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:00,633 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-21 20:23:00,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:23:00,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) 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 6 [2021-10-21 20:23:00,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:00,636 INFO L225 Difference]: With dead ends: 11 [2021-10-21 20:23:00,636 INFO L226 Difference]: Without dead ends: 8 [2021-10-21 20:23:00,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:23:00,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-21 20:23:00,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-21 20:23:00,640 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 20:23:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-21 20:23:00,641 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-21 20:23:00,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:00,642 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-21 20:23:00,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) 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 20:23:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-21 20:23:00,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 20:23:00,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:00,644 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-21 20:23:00,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:00,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-21 20:23:00,872 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:00,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:00,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1805796550, now seen corresponding path program 2 times [2021-10-21 20:23:00,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:00,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578805488] [2021-10-21 20:23:00,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:00,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:00,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:00,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578805488] [2021-10-21 20:23:00,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578805488] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:00,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777742770] [2021-10-21 20:23:00,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:23:00,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:00,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:00,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:01,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:23:01,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:23:01,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:01,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:23:01,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:01,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777742770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:01,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:01,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-21 20:23:01,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755230029] [2021-10-21 20:23:01,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:23:01,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:01,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:23:01,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:23:01,131 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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 20:23:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:01,151 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-21 20:23:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:23:01,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-21 20:23:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:01,156 INFO L225 Difference]: With dead ends: 12 [2021-10-21 20:23:01,156 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 20:23:01,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:23:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 20:23:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 20:23:01,161 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 20:23:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-21 20:23:01,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-10-21 20:23:01,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:01,163 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-21 20:23:01,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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 20:23:01,164 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-21 20:23:01,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:23:01,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:01,166 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-21 20:23:01,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:01,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:01,367 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:01,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:01,368 INFO L82 PathProgramCache]: Analyzing trace with hash 145055718, now seen corresponding path program 3 times [2021-10-21 20:23:01,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:01,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133853055] [2021-10-21 20:23:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:01,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:01,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:01,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133853055] [2021-10-21 20:23:01,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133853055] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:01,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889892408] [2021-10-21 20:23:01,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:23:01,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:01,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:01,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:01,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:23:01,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 20:23:01,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:01,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:23:01,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:01,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889892408] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:01,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:01,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-21 20:23:01,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58859489] [2021-10-21 20:23:01,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:23:01,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:01,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:23:01,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:23:01,629 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) 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 20:23:01,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:01,645 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-21 20:23:01,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:23:01,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) 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 8 [2021-10-21 20:23:01,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:01,647 INFO L225 Difference]: With dead ends: 13 [2021-10-21 20:23:01,647 INFO L226 Difference]: Without dead ends: 10 [2021-10-21 20:23:01,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:23:01,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-21 20:23:01,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-21 20:23:01,654 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 20:23:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-21 20:23:01,658 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-10-21 20:23:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:01,659 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-21 20:23:01,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) 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 20:23:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-21 20:23:01,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 20:23:01,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:01,660 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-21 20:23:01,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:01,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:01,879 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:01,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:01,880 INFO L82 PathProgramCache]: Analyzing trace with hash 201697478, now seen corresponding path program 4 times [2021-10-21 20:23:01,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:01,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558123029] [2021-10-21 20:23:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:01,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:01,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:01,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558123029] [2021-10-21 20:23:01,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558123029] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:01,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345604644] [2021-10-21 20:23:01,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 20:23:01,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:01,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:01,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:01,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:23:02,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 20:23:02,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:02,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:23:02,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:02,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345604644] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:02,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:02,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-21 20:23:02,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613726709] [2021-10-21 20:23:02,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:23:02,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:02,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:23:02,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:23:02,070 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:02,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:02,090 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-21 20:23:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:23:02,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-21 20:23:02,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:02,092 INFO L225 Difference]: With dead ends: 14 [2021-10-21 20:23:02,092 INFO L226 Difference]: Without dead ends: 11 [2021-10-21 20:23:02,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 25.8ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:23:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-21 20:23:02,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-21 20:23:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-21 20:23:02,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2021-10-21 20:23:02,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:02,097 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-21 20:23:02,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-21 20:23:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:23:02,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:02,098 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1] [2021-10-21 20:23:02,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-21 20:23:02,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:02,311 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:02,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:02,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1957592038, now seen corresponding path program 5 times [2021-10-21 20:23:02,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:02,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538034504] [2021-10-21 20:23:02,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:02,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:02,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:02,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538034504] [2021-10-21 20:23:02,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538034504] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:02,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300391671] [2021-10-21 20:23:02,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 20:23:02,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:02,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:02,451 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:02,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 20:23:02,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-21 20:23:02,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:02,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:23:02,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:02,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300391671] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:02,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:02,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-21 20:23:02,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928455333] [2021-10-21 20:23:02,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:23:02,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:02,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:23:02,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:23:02,584 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:02,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:02,608 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-10-21 20:23:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:23:02,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-21 20:23:02,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:02,610 INFO L225 Difference]: With dead ends: 15 [2021-10-21 20:23:02,610 INFO L226 Difference]: Without dead ends: 12 [2021-10-21 20:23:02,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:23:02,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-21 20:23:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-21 20:23:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:02,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-21 20:23:02,618 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2021-10-21 20:23:02,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:02,619 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-21 20:23:02,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-21 20:23:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:23:02,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:02,620 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1] [2021-10-21 20:23:02,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:02,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:02,821 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:02,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:02,822 INFO L82 PathProgramCache]: Analyzing trace with hash 555748550, now seen corresponding path program 6 times [2021-10-21 20:23:02,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:02,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366775196] [2021-10-21 20:23:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:02,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:02,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:02,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366775196] [2021-10-21 20:23:02,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366775196] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:02,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225290584] [2021-10-21 20:23:02,936 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 20:23:02,936 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:02,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:02,938 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:02,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 20:23:03,019 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-21 20:23:03,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:03,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:23:03,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:03,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225290584] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:03,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:03,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-21 20:23:03,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107953632] [2021-10-21 20:23:03,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:23:03,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:03,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:23:03,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:23:03,103 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 1.3) 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 20:23:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:03,132 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-21 20:23:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:23:03,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) 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 11 [2021-10-21 20:23:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:03,136 INFO L225 Difference]: With dead ends: 16 [2021-10-21 20:23:03,137 INFO L226 Difference]: Without dead ends: 13 [2021-10-21 20:23:03,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:23:03,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-21 20:23:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-21 20:23:03,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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 20:23:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-21 20:23:03,150 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-10-21 20:23:03,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:03,150 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-21 20:23:03,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) 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 20:23:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-21 20:23:03,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:23:03,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:03,152 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1] [2021-10-21 20:23:03,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:03,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:03,367 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:03,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:03,368 INFO L82 PathProgramCache]: Analyzing trace with hash 48273382, now seen corresponding path program 7 times [2021-10-21 20:23:03,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:03,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219638856] [2021-10-21 20:23:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:03,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:03,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:03,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219638856] [2021-10-21 20:23:03,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219638856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:03,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628467045] [2021-10-21 20:23:03,529 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 20:23:03,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:03,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:03,535 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:03,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 20:23:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:03,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:23:03,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:03,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628467045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:03,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:03,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-21 20:23:03,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757018301] [2021-10-21 20:23:03,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:23:03,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:03,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:23:03,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:23:03,717 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:03,748 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-21 20:23:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:23:03,749 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 20:23:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:03,750 INFO L225 Difference]: With dead ends: 17 [2021-10-21 20:23:03,750 INFO L226 Difference]: Without dead ends: 14 [2021-10-21 20:23:03,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 70.9ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:23:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-21 20:23:03,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-21 20:23:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-21 20:23:03,755 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-10-21 20:23:03,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:03,755 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-21 20:23:03,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:03,756 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-21 20:23:03,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:23:03,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:03,756 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1] [2021-10-21 20:23:03,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:03,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-21 20:23:03,975 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:03,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:03,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1496412358, now seen corresponding path program 8 times [2021-10-21 20:23:03,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:03,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346381263] [2021-10-21 20:23:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:03,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:04,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:04,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346381263] [2021-10-21 20:23:04,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346381263] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:04,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861864579] [2021-10-21 20:23:04,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:23:04,121 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:04,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:04,131 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:04,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 20:23:04,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:23:04,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:04,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:23:04,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:04,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861864579] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:04,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:04,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-21 20:23:04,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199085245] [2021-10-21 20:23:04,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:23:04,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:04,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:23:04,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:23:04,302 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:04,331 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-21 20:23:04,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:23:04,332 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-21 20:23:04,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:04,334 INFO L225 Difference]: With dead ends: 18 [2021-10-21 20:23:04,335 INFO L226 Difference]: Without dead ends: 15 [2021-10-21 20:23:04,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 66.4ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:23:04,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-21 20:23:04,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-21 20:23:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-21 20:23:04,343 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-10-21 20:23:04,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:04,343 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-21 20:23:04,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:04,344 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-21 20:23:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 20:23:04,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:04,345 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1] [2021-10-21 20:23:04,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:04,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:04,551 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:04,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:04,552 INFO L82 PathProgramCache]: Analyzing trace with hash -855919642, now seen corresponding path program 9 times [2021-10-21 20:23:04,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:04,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522052839] [2021-10-21 20:23:04,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:04,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:04,697 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:04,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:04,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522052839] [2021-10-21 20:23:04,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522052839] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:04,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179657013] [2021-10-21 20:23:04,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:23:04,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:23:04,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:04,720 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:23:04,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 20:23:04,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-21 20:23:04,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:04,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:23:04,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:04,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179657013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:23:04,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:04,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-21 20:23:04,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279189378] [2021-10-21 20:23:04,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 20:23:04,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:04,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 20:23:04,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:23:04,905 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:04,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:04,926 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-21 20:23:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:23:04,927 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-21 20:23:04,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:04,929 INFO L225 Difference]: With dead ends: 19 [2021-10-21 20:23:04,929 INFO L226 Difference]: Without dead ends: 16 [2021-10-21 20:23:04,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 68.2ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:23:04,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-21 20:23:04,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-21 20:23:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-21 20:23:04,945 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-10-21 20:23:04,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:04,945 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-21 20:23:04,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:04,945 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-21 20:23:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:23:04,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:04,947 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2021-10-21 20:23:04,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:05,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 20:23:05,160 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:05,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:05,161 INFO L82 PathProgramCache]: Analyzing trace with hash -763767610, now seen corresponding path program 10 times [2021-10-21 20:23:05,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:05,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541595488] [2021-10-21 20:23:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:05,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:05,196 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:23:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:05,258 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:23:05,258 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:23:05,259 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:23:05,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 20:23:05,270 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:23:05,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:23:05 BoogieIcfgContainer [2021-10-21 20:23:05,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:23:05,314 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:23:05,314 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:23:05,314 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:23:05,315 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:22:59" (3/4) ... [2021-10-21 20:23:05,319 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:23:05,319 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:23:05,321 INFO L168 Benchmark]: Toolchain (without parser) took 6053.98 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 69.0 MB in the beginning and 69.7 MB in the end (delta: -664.3 kB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:23:05,322 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 98.6 MB. Free memory is still 55.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:23:05,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.08 ms. Allocated memory is still 98.6 MB. Free memory was 68.8 MB in the beginning and 74.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:23:05,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.90 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 72.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:23:05,323 INFO L168 Benchmark]: Boogie Preprocessor took 31.83 ms. Allocated memory is still 98.6 MB. Free memory was 72.7 MB in the beginning and 71.8 MB in the end (delta: 935.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:23:05,324 INFO L168 Benchmark]: RCFGBuilder took 333.66 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 63.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:23:05,325 INFO L168 Benchmark]: TraceAbstraction took 5379.29 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 62.7 MB in the beginning and 69.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:23:05,325 INFO L168 Benchmark]: Witness Printer took 5.64 ms. Allocated memory is still 119.5 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:23:05,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 98.6 MB. Free memory is still 55.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 244.08 ms. Allocated memory is still 98.6 MB. Free memory was 68.8 MB in the beginning and 74.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.90 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 72.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.83 ms. Allocated memory is still 98.6 MB. Free memory was 72.7 MB in the beginning and 71.8 MB in the end (delta: 935.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 333.66 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 63.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5379.29 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 62.7 MB in the beginning and 69.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.64 ms. Allocated memory is still 119.5 MB. Free memory is still 69.7 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: 29]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 16. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L9] float main__tick = 0.10000000149011612; [L10] float main__time = 0.0; [L11] int main__i; [L12] main__i = 0 VAL [__return_main=0] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0] [L14] COND FALSE !(main__i < 10) [L23] int __tmp_1; [L24] __tmp_1 = main__time != 1.0 [L25] int __VERIFIER_assert__cond; [L26] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0] [L27] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L29] 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: 5280.9ms, OverallIterations: 11, TraceHistogramMax: 10, EmptinessCheckTime: 22.1ms, AutomataDifference: 327.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 53 SDtfs, 0 SDslu, 78 SDs, 0 SdLazy, 98 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 107.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 398.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=10, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 72.1ms AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 104.3ms SsaConstructionTime, 400.9ms SatisfiabilityAnalysisTime, 1579.4ms InterpolantComputationTime, 200 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 527 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 0/330 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 20:23:05,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/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 20:23:08,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:23:08,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:23:08,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:23:08,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:23:08,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:23:08,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:23:08,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:23:08,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:23:08,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:23:08,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:23:08,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:23:08,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:23:08,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:23:08,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:23:08,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:23:08,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:23:08,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:23:08,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:23:08,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:23:08,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:23:08,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:23:08,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:23:08,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:23:08,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:23:08,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:23:08,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:23:08,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:23:08,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:23:08,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:23:08,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:23:08,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:23:08,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:23:08,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:23:08,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:23:08,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:23:08,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:23:08,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:23:08,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:23:08,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:23:08,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:23:08,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 20:23:08,427 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:23:08,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:23:08,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:23:08,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:23:08,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:23:08,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:23:08,431 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:23:08,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:23:08,432 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:23:08,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:23:08,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:23:08,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:23:08,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:23:08,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:23:08,434 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:23:08,434 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:23:08,434 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:23:08,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:23:08,435 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:23:08,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:23:08,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:23:08,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:23:08,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:23:08,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:23:08,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:23:08,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:23:08,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:23:08,438 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:23:08,438 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:23:08,439 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:23:08,439 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:23:08,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:23:08,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:23:08,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:23:08,440 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_1abfd74d-c8a2-48c4-958e-666734a5c2aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee159be1ed42c29b70080447b490f7a1aeb72331afc90e5794e0e8d61cb20d74 [2021-10-21 20:23:08,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:23:08,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:23:08,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:23:08,836 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:23:08,837 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:23:08,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c [2021-10-21 20:23:08,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/data/6a0549480/3c517b1077534b07aff53c2db9fbfdf3/FLAG1f20396ec [2021-10-21 20:23:09,542 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:23:09,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c [2021-10-21 20:23:09,550 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/data/6a0549480/3c517b1077534b07aff53c2db9fbfdf3/FLAG1f20396ec [2021-10-21 20:23:09,913 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/data/6a0549480/3c517b1077534b07aff53c2db9fbfdf3 [2021-10-21 20:23:09,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:23:09,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:23:09,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:23:09,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:23:09,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:23:09,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:23:09" (1/1) ... [2021-10-21 20:23:09,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201139d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:09, skipping insertion in model container [2021-10-21 20:23:09,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:23:09" (1/1) ... [2021-10-21 20:23:09,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:23:09,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:23:10,192 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_1abfd74d-c8a2-48c4-958e-666734a5c2aa/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2021-10-21 20:23:10,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:23:10,215 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:23:10,234 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_1abfd74d-c8a2-48c4-958e-666734a5c2aa/sv-benchmarks/c/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2021-10-21 20:23:10,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:23:10,256 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:23:10,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:10 WrapperNode [2021-10-21 20:23:10,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:23:10,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:23:10,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:23:10,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:23:10,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:10" (1/1) ... [2021-10-21 20:23:10,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:10" (1/1) ... [2021-10-21 20:23:10,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:23:10,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:23:10,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:23:10,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:23:10,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:10" (1/1) ... [2021-10-21 20:23:10,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:10" (1/1) ... [2021-10-21 20:23:10,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:10" (1/1) ... [2021-10-21 20:23:10,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:10" (1/1) ... [2021-10-21 20:23:10,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:10" (1/1) ... [2021-10-21 20:23:10,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:10" (1/1) ... [2021-10-21 20:23:10,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:10" (1/1) ... [2021-10-21 20:23:10,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:23:10,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:23:10,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:23:10,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:23:10,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:10" (1/1) ... [2021-10-21 20:23:10,400 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:23:10,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:10,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:23:10,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:23:10,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:23:10,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:23:10,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:23:10,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:23:10,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:23:10,876 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 20:23:10,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:23:10 BoogieIcfgContainer [2021-10-21 20:23:10,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:23:10,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:23:10,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:23:10,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:23:10,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:23:09" (1/3) ... [2021-10-21 20:23:10,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0562eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:23:10, skipping insertion in model container [2021-10-21 20:23:10,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:10" (2/3) ... [2021-10-21 20:23:10,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0562eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:23:10, skipping insertion in model container [2021-10-21 20:23:10,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:23:10" (3/3) ... [2021-10-21 20:23:10,890 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c.p+cfa-reducer.c [2021-10-21 20:23:10,914 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:23:10,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:23:11,013 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:23:11,022 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 20:23:11,023 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:23:11,040 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 20:23:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 20:23:11,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:11,047 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 20:23:11,048 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:11,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:11,056 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2021-10-21 20:23:11,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:23:11,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079690516] [2021-10-21 20:23:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:11,073 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:23:11,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:23:11,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:23:11,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:23:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:11,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:23:11,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:11,358 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 20:23:11,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:23:11,401 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 20:23:11,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:23:11,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079690516] [2021-10-21 20:23:11,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079690516] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:23:11,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:23:11,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-21 20:23:11,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380476133] [2021-10-21 20:23:11,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:23:11,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:23:11,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:23:11,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:23:11,440 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 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 20:23:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:11,725 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-10-21 20:23:11,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:23:11,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) Word has length 5 [2021-10-21 20:23:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:11,742 INFO L225 Difference]: With dead ends: 17 [2021-10-21 20:23:11,743 INFO L226 Difference]: Without dead ends: 8 [2021-10-21 20:23:11,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:23:11,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-21 20:23:11,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-21 20:23:11,781 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 20:23:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-21 20:23:11,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2021-10-21 20:23:11,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:11,785 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-21 20:23:11,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 20:23:11,786 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-21 20:23:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 20:23:11,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:11,787 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-21 20:23:11,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:12,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:23:12,004 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:12,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:12,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1805796550, now seen corresponding path program 1 times [2021-10-21 20:23:12,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:23:12,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728902388] [2021-10-21 20:23:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:12,007 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:23:12,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:23:12,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:23:12,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:23:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:12,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:23:12,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:12,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:23:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:12,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:23:12,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728902388] [2021-10-21 20:23:12,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728902388] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:23:12,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:12,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-21 20:23:12,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048105688] [2021-10-21 20:23:12,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:23:12,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:23:12,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:23:12,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:23:12,511 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:13,161 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-10-21 20:23:13,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:23:13,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-21 20:23:13,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:13,167 INFO L225 Difference]: With dead ends: 15 [2021-10-21 20:23:13,168 INFO L226 Difference]: Without dead ends: 12 [2021-10-21 20:23:13,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 155.1ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:23:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-21 20:23:13,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-21 20:23:13,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:13,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-21 20:23:13,174 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-10-21 20:23:13,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:13,174 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-21 20:23:13,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-21 20:23:13,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:23:13,176 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:13,176 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1] [2021-10-21 20:23:13,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:13,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:23:13,388 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:13,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:13,389 INFO L82 PathProgramCache]: Analyzing trace with hash 555748550, now seen corresponding path program 2 times [2021-10-21 20:23:13,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:23:13,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154466412] [2021-10-21 20:23:13,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:23:13,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:23:13,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:23:13,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:23:13,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:23:13,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:23:13,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:13,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:23:13,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:23:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:13,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:23:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:14,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:23:14,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154466412] [2021-10-21 20:23:14,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154466412] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:23:14,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:23:14,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-21 20:23:14,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27473938] [2021-10-21 20:23:14,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 20:23:14,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:23:14,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 20:23:14,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:23:14,152 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:15,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:15,027 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-10-21 20:23:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:23:15,031 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-21 20:23:15,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:23:15,032 INFO L225 Difference]: With dead ends: 19 [2021-10-21 20:23:15,032 INFO L226 Difference]: Without dead ends: 16 [2021-10-21 20:23:15,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 347.2ms TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-10-21 20:23:15,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-21 20:23:15,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-21 20:23:15,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-21 20:23:15,040 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2021-10-21 20:23:15,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:23:15,041 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-21 20:23:15,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:23:15,042 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-21 20:23:15,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:23:15,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:23:15,043 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2021-10-21 20:23:15,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:23:15,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:23:15,252 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:23:15,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:15,253 INFO L82 PathProgramCache]: Analyzing trace with hash -763767610, now seen corresponding path program 3 times [2021-10-21 20:23:15,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:23:15,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208886078] [2021-10-21 20:23:15,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:23:15,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:23:15,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:23:15,256 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:23:15,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 20:23:15,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-21 20:23:15,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:23:15,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:23:15,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:26,181 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__time~0 (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 20:24:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-10-21 20:24:26,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:24:55,763 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-10-21 20:25:01,363 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-10-21 20:25:07,229 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-10-21 20:25:09,256 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-10-21 20:25:14,765 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-10-21 20:25:16,793 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-10-21 20:25:22,892 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-10-21 20:25:24,923 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-10-21 20:25:31,053 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-10-21 20:25:33,085 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-10-21 20:25:39,207 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-10-21 20:25:41,246 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-10-21 20:25:47,380 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-10-21 20:25:55,282 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2021-10-21 20:25:57,321 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-10-21 20:25:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 52 not checked. [2021-10-21 20:25:57,322 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:25:57,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208886078] [2021-10-21 20:25:57,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208886078] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:25:57,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:25:57,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-10-21 20:25:57,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806049871] [2021-10-21 20:25:57,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-21 20:25:57,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:25:57,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-21 20:25:57,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=234, Unknown=18, NotChecked=410, Total=756 [2021-10-21 20:25:57,326 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 28 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:02,067 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-10-21 20:26:07,068 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__time~0 (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) c_ULTIMATE.start_main_~main__tick~0)) (= c_ULTIMATE.start_main_~main__tick~0 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 20:26:16,624 WARN L860 $PredicateComparison]: unable to prove that (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_ULTIMATE.start_main_~main__time~0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) (= c_ULTIMATE.start_main_~main__tick~0 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 20:26:18,670 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__time~0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) (= c_ULTIMATE.start_main_~main__tick~0 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 20:26:20,705 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__tick~0 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_ULTIMATE.start_main_~main__time~0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 20:26:22,737 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__tick~0 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (= c_ULTIMATE.start_main_~main__time~0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0) c_ULTIMATE.start_main_~main__tick~0)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 20:26:42,377 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0 c_ULTIMATE.start_main_~main__tick~0)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__time~0) .cse0)) (= c_ULTIMATE.start_main_~main__time~0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ +zero 11 53)) .cse1) .cse1) .cse1) .cse1) .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~main__tick~0)) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 20:26:52,689 WARN L207 SmtUtils]: Spent 5.09 s on a formula simplification that was a NOOP. DAG size: 13 [2021-10-21 20:27:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:12,883 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-10-21 20:27:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 20:27:12,884 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-21 20:27:12,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:12,885 INFO L225 Difference]: With dead ends: 24 [2021-10-21 20:27:12,885 INFO L226 Difference]: Without dead ends: 19 [2021-10-21 20:27:12,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 165278.5ms TimeCoverageRelationStatistics Valid=135, Invalid=325, Unknown=28, NotChecked=918, Total=1406 [2021-10-21 20:27:12,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-21 20:27:12,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-21 20:27:12,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:12,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-21 20:27:12,893 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 15 [2021-10-21 20:27:12,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:12,894 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-21 20:27:12,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:12,894 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-21 20:27:12,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:27:12,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:12,896 INFO L512 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1] [2021-10-21 20:27:12,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-21 20:27:13,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:13,111 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:27:13,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:13,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1273818086, now seen corresponding path program 4 times [2021-10-21 20:27:13,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:13,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804500431] [2021-10-21 20:27:13,113 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 20:27:13,113 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:13,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:13,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:13,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 20:27:13,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 20:27:13,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:27:13,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 20:27:13,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 33 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 20:27:14,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 33 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 20:27:15,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:15,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804500431] [2021-10-21 20:27:15,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804500431] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:27:15,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:27:15,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-10-21 20:27:15,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613026343] [2021-10-21 20:27:15,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-21 20:27:15,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:15,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-21 20:27:15,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-10-21 20:27:15,436 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:16,547 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-21 20:27:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:27:16,552 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 20:27:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:16,553 INFO L225 Difference]: With dead ends: 19 [2021-10-21 20:27:16,553 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:27:16,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1364.3ms TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-10-21 20:27:16,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:27:16,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:27:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:27:16,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-10-21 20:27:16,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:16,555 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:27:16,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:16,556 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:27:16,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:27:16,559 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:27:16,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-21 20:27:16,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:16,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:27:16,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:27:16,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:35:33,106 WARN L207 SmtUtils]: Spent 8.27 m on a formula simplification. DAG size of input: 116 DAG size of output: 92 [2021-10-21 20:35:33,110 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:35:33,110 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:35:33,111 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:35:33,111 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-21 20:35:33,111 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:35:33,111 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 35) no Hoare annotation was computed. [2021-10-21 20:35:33,111 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2021-10-21 20:35:33,112 INFO L853 garLoopResultBuilder]: At program point L18(lines 8 38) the Hoare annotation is: (let ((.cse10 ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)))) (let ((.cse13 (fp.add currentRoundingMode .cse10 ULTIMATE.start_main_~main__tick~0))) (let ((.cse5 (fp.add currentRoundingMode .cse13 ULTIMATE.start_main_~main__tick~0))) (let ((.cse14 (fp.add currentRoundingMode .cse5 ULTIMATE.start_main_~main__tick~0))) (let ((.cse4 (fp.add currentRoundingMode .cse14 ULTIMATE.start_main_~main__tick~0))) (let ((.cse9 (fp.add currentRoundingMode .cse4 ULTIMATE.start_main_~main__tick~0))) (let ((.cse6 (fp.add currentRoundingMode .cse9 ULTIMATE.start_main_~main__tick~0))) (let ((.cse11 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (.cse12 (fp.add currentRoundingMode ULTIMATE.start_main_~main__time~0 ULTIMATE.start_main_~main__tick~0)) (.cse0 (fp.add currentRoundingMode .cse6 ULTIMATE.start_main_~main__tick~0))) (let ((.cse3 (fp.add currentRoundingMode .cse0 ULTIMATE.start_main_~main__tick~0)) (.cse7 (fp.add currentRoundingMode .cse12 ULTIMATE.start_main_~main__tick~0)) (.cse8 ((_ to_fp 11 53) currentRoundingMode 1.0)) (.cse1 (= ULTIMATE.start_main_~main__tick~0 .cse11)) (.cse2 (= currentRoundingMode roundNearestTiesToEven))) (or (and (= ULTIMATE.start_main_~main__time~0 .cse0) .cse1 (= (_ bv7 32) ULTIMATE.start_main_~main__i~0) .cse2) (and .cse1 (= ULTIMATE.start_main_~main__time~0 .cse3) (= (_ bv8 32) ULTIMATE.start_main_~main__i~0) .cse2) (and (= ULTIMATE.start_main_~main__i~0 (_ bv9 32)) .cse1 (= ULTIMATE.start_main_~main__time~0 (fp.add currentRoundingMode .cse3 ULTIMATE.start_main_~main__tick~0)) .cse2) (and (= ULTIMATE.start_main_~main__time~0 .cse4) .cse1 (= (_ bv4 32) ULTIMATE.start_main_~main__i~0) .cse2) (and .cse1 (= ULTIMATE.start_main_~main__time~0 .cse5) (= (_ bv2 32) ULTIMATE.start_main_~main__i~0) .cse2) (and .cse1 (= (_ bv6 32) ULTIMATE.start_main_~main__i~0) (= ULTIMATE.start_main_~main__time~0 .cse6) .cse2) (and (= ULTIMATE.start_main_~main__i~0 (_ bv5 32)) .cse1 (not (fp.eq ((_ to_fp 11 53) currentRoundingMode (fp.add currentRoundingMode (fp.add currentRoundingMode (fp.add currentRoundingMode .cse7 ULTIMATE.start_main_~main__tick~0) ULTIMATE.start_main_~main__tick~0) ULTIMATE.start_main_~main__tick~0)) .cse8)) (= ULTIMATE.start_main_~main__time~0 .cse9) .cse2) (and (= (_ bv10 32) ULTIMATE.start_main_~main__i~0) (= ULTIMATE.start_main_~main__time~0 (fp.add currentRoundingMode (fp.add currentRoundingMode (fp.add currentRoundingMode (fp.add currentRoundingMode (fp.add currentRoundingMode (fp.add currentRoundingMode (fp.add currentRoundingMode (fp.add currentRoundingMode (fp.add currentRoundingMode (fp.add currentRoundingMode .cse10 .cse11) .cse11) .cse11) .cse11) .cse11) .cse11) .cse11) .cse11) .cse11) .cse11)) (not (fp.eq ((_ to_fp 11 53) currentRoundingMode .cse12) .cse8)) (not (fp.eq ((_ to_fp 11 53) currentRoundingMode .cse7) .cse8)) .cse2) (and .cse1 (= ULTIMATE.start_main_~main__time~0 .cse10) .cse2 (= ULTIMATE.start_main_~main__i~0 (_ bv0 32))) (and (= ULTIMATE.start_main_~main__time~0 .cse13) .cse1 (= ULTIMATE.start_main_~main__i~0 (_ bv1 32)) .cse2) (and (= (_ bv3 32) ULTIMATE.start_main_~main__i~0) (= ULTIMATE.start_main_~main__time~0 .cse14) .cse1 .cse2))))))))))) [2021-10-21 20:35:33,112 INFO L860 garLoopResultBuilder]: At program point L34(lines 7 38) the Hoare annotation is: true [2021-10-21 20:35:33,117 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:35:33,126 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,127 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,127 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,128 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,128 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,128 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,129 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,129 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,130 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,130 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,130 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,151 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,151 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,151 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,152 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,152 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,152 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,153 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,153 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,153 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,154 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,154 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:35:33 BoogieIcfgContainer [2021-10-21 20:35:33,160 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:35:33,161 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:35:33,161 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:35:33,161 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:35:33,162 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:23:10" (3/4) ... [2021-10-21 20:35:33,165 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:35:33,175 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-21 20:35:33,175 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-21 20:35:33,175 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:35:33,175 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:35:33,222 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:35:33,222 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:35:33,223 INFO L168 Benchmark]: Toolchain (without parser) took 743303.49 ms. Allocated memory was 52.4 MB in the beginning and 86.0 MB in the end (delta: 33.6 MB). Free memory was 29.6 MB in the beginning and 51.7 MB in the end (delta: -22.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:35:33,224 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 52.4 MB. Free memory was 33.2 MB in the beginning and 33.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:35:33,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.44 ms. Allocated memory is still 52.4 MB. Free memory was 29.4 MB in the beginning and 30.8 MB in the end (delta: -1.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:35:33,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.02 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 30.8 MB in the beginning and 55.1 MB in the end (delta: -24.3 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:35:33,226 INFO L168 Benchmark]: Boogie Preprocessor took 66.32 ms. Allocated memory is still 71.3 MB. Free memory was 55.1 MB in the beginning and 54.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:35:33,226 INFO L168 Benchmark]: RCFGBuilder took 500.04 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 45.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:35:33,227 INFO L168 Benchmark]: TraceAbstraction took 742279.16 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 44.5 MB in the beginning and 55.9 MB in the end (delta: -11.3 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:35:33,227 INFO L168 Benchmark]: Witness Printer took 61.57 ms. Allocated memory is still 86.0 MB. Free memory was 55.9 MB in the beginning and 51.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:35:33,230 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 52.4 MB. Free memory was 33.2 MB in the beginning and 33.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.44 ms. Allocated memory is still 52.4 MB. Free memory was 29.4 MB in the beginning and 30.8 MB in the end (delta: -1.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.02 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 30.8 MB in the beginning and 55.1 MB in the end (delta: -24.3 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.32 ms. Allocated memory is still 71.3 MB. Free memory was 55.1 MB in the beginning and 54.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 500.04 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 45.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 742279.16 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 44.5 MB in the beginning and 55.9 MB in the end (delta: -11.3 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. * Witness Printer took 61.57 ms. Allocated memory is still 86.0 MB. Free memory was 55.9 MB in the beginning and 51.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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 - PositiveResult [Line: 29]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 742106.8ms, OverallIterations: 5, TraceHistogramMax: 13, EmptinessCheckTime: 15.4ms, AutomataDifference: 78555.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 496334.2ms, InitialAbstractionConstructionTime: 11.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 3 SDslu, 74 SDs, 0 SdLazy, 299 SolverSat, 36 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 15476.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 167161.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=4, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 39.0ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 14 NumberOfFragments, 457 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 111.4ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 159 FormulaSimplificationTreeSizeReductionInter, 496216.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 75.9ms SsaConstructionTime, 1432.7ms SatisfiabilityAnalysisTime, 164154.9ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 928 SizeOfPredicates, 7 NumberOfNonLiveVariables, 248 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 72/340 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8]: Loop Invariant [2021-10-21 20:35:33,239 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,240 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,240 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,240 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,240 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,241 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,241 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,241 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,242 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,242 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,242 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,246 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,247 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,247 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,247 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,247 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,248 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,248 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,248 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,249 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,249 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 20:35:33,249 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((((((((((main__time == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()), main__tick), main__tick), main__tick), main__tick), main__tick), main__tick), main__tick) && main__tick == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))) && 7bv32 == main__i) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) || (((main__tick == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000)) && main__time == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()), main__tick), main__tick), main__tick), main__tick), main__tick), main__tick), main__tick), main__tick)) && 8bv32 == main__i) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || (((main__i == 9bv32 && main__tick == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))) && main__time == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()), main__tick), main__tick), main__tick), main__tick), main__tick), main__tick), main__tick), main__tick), main__tick)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || (((main__time == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()), main__tick), main__tick), main__tick), main__tick) && main__tick == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))) && 4bv32 == main__i) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || (((main__tick == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000)) && main__time == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()), main__tick), main__tick)) && 2bv32 == main__i) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || (((main__tick == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000)) && 6bv32 == main__i) && main__time == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()), main__tick), main__tick), main__tick), main__tick), main__tick), main__tick)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || ((((main__i == 5bv32 && main__tick == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))) && !~fp.eq~DOUBLE(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, main__time, main__tick), main__tick), main__tick), main__tick), main__tick)), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && main__time == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()), main__tick), main__tick), main__tick), main__tick), main__tick)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || ((((10bv32 == main__i && main__time == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000)))) && !~fp.eq~DOUBLE(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, main__time, main__tick)), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && !~fp.eq~DOUBLE(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, main__time, main__tick), main__tick)), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || (((main__tick == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000)) && main__time == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && main__i == 0bv32)) || (((main__time == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()), main__tick) && main__tick == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))) && main__i == 1bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || (((3bv32 == main__i && main__time == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()), main__tick), main__tick), main__tick)) && main__tick == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2500000037252903/25000000000000000))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 20:35:33,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abfd74d-c8a2-48c4-958e-666734a5c2aa/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...