./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8dd2b259de573dae381590d9c9a53c821e05ecea3ef79b47acb4a28edd56bf9a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:40:32,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:40:32,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:40:33,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:40:33,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:40:33,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:40:33,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:40:33,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:40:33,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:40:33,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:40:33,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:40:33,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:40:33,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:40:33,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:40:33,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:40:33,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:40:33,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:40:33,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:40:33,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:40:33,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:40:33,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:40:33,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:40:33,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:40:33,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:40:33,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:40:33,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:40:33,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:40:33,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:40:33,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:40:33,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:40:33,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:40:33,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:40:33,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:40:33,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:40:33,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:40:33,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:40:33,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:40:33,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:40:33,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:40:33,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:40:33,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:40:33,115 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:40:33,166 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:40:33,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:40:33,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:40:33,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:40:33,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:40:33,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:40:33,176 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:40:33,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:40:33,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:40:33,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:40:33,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:40:33,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:40:33,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:40:33,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:40:33,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:40:33,180 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:40:33,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:40:33,180 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:40:33,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:40:33,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:40:33,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:40:33,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:40:33,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:40:33,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:40:33,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:40:33,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:40:33,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:40:33,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:40:33,183 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:40:33,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:40:33,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:40:33,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:40:33,186 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_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dd2b259de573dae381590d9c9a53c821e05ecea3ef79b47acb4a28edd56bf9a [2021-11-23 12:40:33,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:40:33,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:40:33,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:40:33,530 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:40:33,531 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:40:33,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-11-23 12:40:33,625 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/data/781573b5f/7c042399f9f14e589614422049223f3e/FLAG06bb9b3e5 [2021-11-23 12:40:34,238 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:40:34,239 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-11-23 12:40:34,252 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/data/781573b5f/7c042399f9f14e589614422049223f3e/FLAG06bb9b3e5 [2021-11-23 12:40:34,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/data/781573b5f/7c042399f9f14e589614422049223f3e [2021-11-23 12:40:34,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:40:34,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:40:34,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:40:34,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:40:34,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:40:34,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:40:34" (1/1) ... [2021-11-23 12:40:34,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aef9059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:34, skipping insertion in model container [2021-11-23 12:40:34,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:40:34" (1/1) ... [2021-11-23 12:40:34,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:40:34,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:40:34,848 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-11-23 12:40:34,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:40:34,865 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:40:34,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-11-23 12:40:34,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:40:34,898 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:40:34,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:34 WrapperNode [2021-11-23 12:40:34,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:40:34,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:40:34,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:40:34,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:40:34,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:34" (1/1) ... [2021-11-23 12:40:34,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:34" (1/1) ... [2021-11-23 12:40:34,938 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2021-11-23 12:40:34,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:40:34,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:40:34,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:40:34,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:40:34,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:34" (1/1) ... [2021-11-23 12:40:34,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:34" (1/1) ... [2021-11-23 12:40:34,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:34" (1/1) ... [2021-11-23 12:40:34,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:34" (1/1) ... [2021-11-23 12:40:34,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:34" (1/1) ... [2021-11-23 12:40:34,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:34" (1/1) ... [2021-11-23 12:40:34,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:34" (1/1) ... [2021-11-23 12:40:34,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:40:34,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:40:34,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:40:34,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:40:34,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:34" (1/1) ... [2021-11-23 12:40:34,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:40:34,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:40:35,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:40:35,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:40:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:40:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:40:35,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:40:35,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:40:35,150 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:40:35,152 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:40:35,295 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:40:35,303 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:40:35,304 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 12:40:35,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:35 BoogieIcfgContainer [2021-11-23 12:40:35,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:40:35,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:40:35,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:40:35,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:40:35,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:40:34" (1/3) ... [2021-11-23 12:40:35,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618a82f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:40:35, skipping insertion in model container [2021-11-23 12:40:35,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:34" (2/3) ... [2021-11-23 12:40:35,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618a82f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:40:35, skipping insertion in model container [2021-11-23 12:40:35,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:35" (3/3) ... [2021-11-23 12:40:35,319 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2021-11-23 12:40:35,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:40:35,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:40:35,405 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:40:35,419 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:40:35,420 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:40:35,449 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) [2021-11-23 12:40:35,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 12:40:35,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:35,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 12:40:35,461 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:35,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:35,468 INFO L85 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2021-11-23 12:40:35,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:35,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189374402] [2021-11-23 12:40:35,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:35,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:40:35,588 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:40:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:40:35,624 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:40:35,626 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 12:40:35,628 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 12:40:35,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:40:35,636 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 12:40:35,640 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:40:35,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:40:35 BoogieIcfgContainer [2021-11-23 12:40:35,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:40:35,663 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:40:35,664 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:40:35,664 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:40:35,665 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:35" (3/4) ... [2021-11-23 12:40:35,668 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 12:40:35,669 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:40:35,670 INFO L158 Benchmark]: Toolchain (without parser) took 1056.88ms. Allocated memory is still 107.0MB. Free memory was 74.6MB in the beginning and 57.4MB in the end (delta: 17.2MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2021-11-23 12:40:35,671 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 107.0MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:40:35,672 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.19ms. Allocated memory is still 107.0MB. Free memory was 74.4MB in the beginning and 81.0MB in the end (delta: -6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:40:35,673 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.05ms. Allocated memory is still 107.0MB. Free memory was 81.0MB in the beginning and 79.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:40:35,673 INFO L158 Benchmark]: Boogie Preprocessor took 23.08ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 78.7MB in the end (delta: 910.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:40:35,674 INFO L158 Benchmark]: RCFGBuilder took 342.95ms. Allocated memory is still 107.0MB. Free memory was 78.7MB in the beginning and 70.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:40:35,675 INFO L158 Benchmark]: TraceAbstraction took 353.96ms. Allocated memory is still 107.0MB. Free memory was 70.0MB in the beginning and 57.8MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 12:40:35,676 INFO L158 Benchmark]: Witness Printer took 5.50ms. Allocated memory is still 107.0MB. Free memory was 57.8MB in the beginning and 57.4MB in the end (delta: 361.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:40:35,680 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 107.0MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.19ms. Allocated memory is still 107.0MB. Free memory was 74.4MB in the beginning and 81.0MB in the end (delta: -6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.05ms. Allocated memory is still 107.0MB. Free memory was 81.0MB in the beginning and 79.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.08ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 78.7MB in the end (delta: 910.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 342.95ms. Allocated memory is still 107.0MB. Free memory was 78.7MB in the beginning and 70.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 353.96ms. Allocated memory is still 107.0MB. Free memory was 70.0MB in the beginning and 57.8MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 5.50ms. Allocated memory is still 107.0MB. Free memory was 57.8MB in the beginning and 57.4MB in the end (delta: 361.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 27]: 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 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L9] double main__x = 1.0; [L10] double main__x1 = main__x / 1.6; VAL [__return_main=0, main__x=1] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L27] reach_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 12:40:35,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8dd2b259de573dae381590d9c9a53c821e05ecea3ef79b47acb4a28edd56bf9a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:40:38,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:40:38,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:40:38,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:40:38,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:40:38,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:40:38,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:40:38,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:40:38,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:40:38,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:40:38,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:40:38,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:40:38,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:40:38,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:40:38,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:40:38,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:40:38,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:40:38,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:40:38,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:40:38,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:40:38,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:40:38,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:40:38,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:40:38,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:40:38,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:40:38,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:40:38,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:40:38,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:40:38,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:40:38,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:40:38,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:40:38,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:40:38,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:40:38,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:40:38,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:40:38,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:40:38,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:40:38,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:40:38,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:40:38,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:40:38,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:40:38,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-23 12:40:38,775 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:40:38,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:40:38,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:40:38,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:40:38,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:40:38,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:40:38,780 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:40:38,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:40:38,780 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:40:38,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:40:38,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:40:38,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:40:38,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:40:38,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:40:38,783 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:40:38,783 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 12:40:38,784 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 12:40:38,784 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:40:38,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:40:38,784 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:40:38,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:40:38,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:40:38,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:40:38,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:40:38,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:40:38,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:40:38,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:40:38,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:40:38,787 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 12:40:38,788 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 12:40:38,788 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:40:38,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:40:38,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:40:38,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:40:38,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 12:40:38,789 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_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dd2b259de573dae381590d9c9a53c821e05ecea3ef79b47acb4a28edd56bf9a [2021-11-23 12:40:39,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:40:39,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:40:39,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:40:39,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:40:39,364 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:40:39,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-11-23 12:40:39,458 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/data/30fc3508a/33e55a0dd9a74e61af49437512dab124/FLAG555beda23 [2021-11-23 12:40:40,046 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:40:40,048 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-11-23 12:40:40,055 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/data/30fc3508a/33e55a0dd9a74e61af49437512dab124/FLAG555beda23 [2021-11-23 12:40:40,410 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/data/30fc3508a/33e55a0dd9a74e61af49437512dab124 [2021-11-23 12:40:40,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:40:40,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:40:40,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:40:40,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:40:40,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:40:40,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:40:40" (1/1) ... [2021-11-23 12:40:40,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568533d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:40, skipping insertion in model container [2021-11-23 12:40:40,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:40:40" (1/1) ... [2021-11-23 12:40:40,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:40:40,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:40:40,731 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-11-23 12:40:40,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:40:40,757 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:40:40,782 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-11-23 12:40:40,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:40:40,805 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:40:40,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:40 WrapperNode [2021-11-23 12:40:40,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:40:40,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:40:40,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:40:40,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:40:40,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:40" (1/1) ... [2021-11-23 12:40:40,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:40" (1/1) ... [2021-11-23 12:40:40,883 INFO L137 Inliner]: procedures = 13, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2021-11-23 12:40:40,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:40:40,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:40:40,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:40:40,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:40:40,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:40" (1/1) ... [2021-11-23 12:40:40,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:40" (1/1) ... [2021-11-23 12:40:40,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:40" (1/1) ... [2021-11-23 12:40:40,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:40" (1/1) ... [2021-11-23 12:40:40,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:40" (1/1) ... [2021-11-23 12:40:40,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:40" (1/1) ... [2021-11-23 12:40:40,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:40" (1/1) ... [2021-11-23 12:40:40,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:40:40,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:40:40,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:40:40,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:40:40,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:40" (1/1) ... [2021-11-23 12:40:40,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:40:40,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:40:40,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:40:40,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:40:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:40:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:40:41,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:40:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 12:40:41,105 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:40:41,107 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:40:45,227 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:40:45,235 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:40:45,235 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 12:40:45,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:45 BoogieIcfgContainer [2021-11-23 12:40:45,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:40:45,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:40:45,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:40:45,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:40:45,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:40:40" (1/3) ... [2021-11-23 12:40:45,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abbcbb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:40:45, skipping insertion in model container [2021-11-23 12:40:45,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:40" (2/3) ... [2021-11-23 12:40:45,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abbcbb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:40:45, skipping insertion in model container [2021-11-23 12:40:45,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:45" (3/3) ... [2021-11-23 12:40:45,248 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2021-11-23 12:40:45,254 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:40:45,255 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:40:45,310 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:40:45,319 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:40:45,319 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:40:45,355 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) [2021-11-23 12:40:45,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 12:40:45,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:45,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 12:40:45,363 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:45,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:45,370 INFO L85 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2021-11-23 12:40:45,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:40:45,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370306214] [2021-11-23 12:40:45,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:45,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:40:45,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:40:45,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:40:45,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 12:40:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:46,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:40:46,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:40:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:52,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:41:02,522 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.eq (fp.div c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) .cse0))) is different from true [2021-11-23 12:41:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:02,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:41:02,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370306214] [2021-11-23 12:41:02,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370306214] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:41:02,525 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:41:02,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 12:41:02,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205506679] [2021-11-23 12:41:02,529 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:41:02,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:41:02,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:41:02,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:41:02,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=12, Unknown=2, NotChecked=6, Total=30 [2021-11-23 12:41:02,574 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:41:07,648 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= |c_ULTIMATE.start_main_~main__x1~0#1| (fp.div roundNearestTiesToEven |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:41:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:41:07,667 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-11-23 12:41:07,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:41:07,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-23 12:41:07,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:41:07,678 INFO L225 Difference]: With dead ends: 16 [2021-11-23 12:41:07,678 INFO L226 Difference]: Without dead ends: 7 [2021-11-23 12:41:07,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=12, Invalid=13, Unknown=3, NotChecked=14, Total=42 [2021-11-23 12:41:07,687 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:41:07,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 8 Unchecked, 0.8s Time] [2021-11-23 12:41:07,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-23 12:41:07,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-23 12:41:07,723 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) [2021-11-23 12:41:07,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-11-23 12:41:07,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-11-23 12:41:07,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:41:07,726 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-11-23 12:41:07,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:41:07,727 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-11-23 12:41:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 12:41:07,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:41:07,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 12:41:07,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:41:07,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:41:07,941 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:41:07,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:07,943 INFO L85 PathProgramCache]: Analyzing trace with hash 889537510, now seen corresponding path program 1 times [2021-11-23 12:41:07,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:41:07,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320221619] [2021-11-23 12:41:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:07,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:41:07,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:41:07,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:41:07,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 12:41:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:41:09,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 12:41:09,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:41:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:22,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:41:30,521 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) |c_ULTIMATE.start_main_~main__x1~0#1|)) is different from false [2021-11-23 12:41:38,229 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-11-23 12:41:40,539 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-11-23 12:41:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 12:41:40,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:41:40,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320221619] [2021-11-23 12:41:40,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320221619] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:41:40,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:41:40,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-11-23 12:41:40,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825795752] [2021-11-23 12:41:40,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:41:40,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:41:40,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:41:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:41:40,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=20, Unknown=3, NotChecked=18, Total=56 [2021-11-23 12:41:40,545 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:41:42,870 WARN L860 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:41:45,568 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse0) |c_ULTIMATE.start_main_~main__x1~0#1|)) (= |c_ULTIMATE.start_main_~main__x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 12:41:47,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:41:49,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:41:51,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:41:53,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:41:55,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:41:57,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:41:58,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:41:59,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:41:59,621 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-11-23 12:41:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:41:59,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 12:41:59,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:41:59,624 INFO L225 Difference]: With dead ends: 12 [2021-11-23 12:41:59,624 INFO L226 Difference]: Without dead ends: 9 [2021-11-23 12:41:59,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=5, NotChecked=44, Total=90 [2021-11-23 12:41:59,627 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:41:59,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 3 Unknown, 9 Unchecked, 14.1s Time] [2021-11-23 12:41:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-23 12:41:59,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-23 12:41:59,632 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) [2021-11-23 12:41:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-23 12:41:59,632 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-11-23 12:41:59,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:41:59,633 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-23 12:41:59,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:41:59,633 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-23 12:41:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 12:41:59,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:41:59,634 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-11-23 12:41:59,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:41:59,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:41:59,835 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:41:59,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash 145055718, now seen corresponding path program 2 times [2021-11-23 12:41:59,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:41:59,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344618489] [2021-11-23 12:41:59,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:41:59,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:41:59,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:41:59,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:41:59,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 12:42:03,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:42:03,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:42:03,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 12:42:03,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:42:14,742 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:42:17,233 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:42:23,264 WARN L227 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:42:27,282 WARN L860 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~main__x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:42:36,942 WARN L227 SmtUtils]: Spent 6.69s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:42:39,778 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= |c_ULTIMATE.start_main_~main__x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| .cse0)) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~main__x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 12:42:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-23 12:42:39,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:42:50,764 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-11-23 12:42:56,025 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:43:03,265 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-11-23 12:43:05,561 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-11-23 12:43:11,198 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:43:17,126 WARN L227 SmtUtils]: Spent 5.93s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:43:19,611 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-11-23 12:43:22,076 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-11-23 12:43:28,788 WARN L227 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 11 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:43:35,073 WARN L227 SmtUtils]: Spent 6.28s on a formula simplification that was a NOOP. DAG size: 11 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:43:37,691 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-11-23 12:43:40,350 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-11-23 12:43:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-23 12:43:40,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:43:40,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344618489] [2021-11-23 12:43:40,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344618489] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:43:40,352 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:43:40,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-11-23 12:43:40,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314174086] [2021-11-23 12:43:40,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:43:40,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:43:40,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:43:40,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:43:40,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=24, Unknown=10, NotChecked=98, Total=156 [2021-11-23 12:43:40,355 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:43,038 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:43:45,527 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= |c_ULTIMATE.start_main_~main__x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 12:43:48,297 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= |c_ULTIMATE.start_main_~main__x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))))) is different from false [2021-11-23 12:43:51,493 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= |c_ULTIMATE.start_main_~main__x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))))) is different from true [2021-11-23 12:43:53,674 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~main__x1~0#1|) (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse0) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 12:43:55,971 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (or (fp.eq |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|))) (= |c_ULTIMATE.start_main_~main__x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| .cse0)) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~main__x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 12:43:56,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:43:56,071 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-11-23 12:43:56,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:43:56,072 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 12:43:56,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:43:56,072 INFO L225 Difference]: With dead ends: 13 [2021-11-23 12:43:56,072 INFO L226 Difference]: Without dead ends: 10 [2021-11-23 12:43:56,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 47.1s TimeCoverageRelationStatistics Valid=34, Invalid=28, Unknown=16, NotChecked=228, Total=306 [2021-11-23 12:43:56,075 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:43:56,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2021-11-23 12:43:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-23 12:43:56,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-23 12:43:56,081 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) [2021-11-23 12:43:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-11-23 12:43:56,082 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-11-23 12:43:56,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:43:56,082 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-11-23 12:43:56,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:56,083 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-11-23 12:43:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:43:56,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:43:56,083 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-11-23 12:43:56,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-23 12:43:56,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:43:56,286 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:43:56,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:43:56,287 INFO L85 PathProgramCache]: Analyzing trace with hash 201697478, now seen corresponding path program 3 times [2021-11-23 12:43:56,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:43:56,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9401004] [2021-11-23 12:43:56,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:43:56,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:43:56,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:43:56,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:43:56,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 12:44:00,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-23 12:44:00,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:44:01,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 12:44:01,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:13,182 WARN L227 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:44:16,018 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:44:22,051 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:44:26,046 WARN L860 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~main__x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:44:32,747 WARN L227 SmtUtils]: Spent 6.66s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:44:35,452 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-23 12:44:46,144 WARN L227 SmtUtils]: Spent 7.54s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:44:50,510 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= |c_ULTIMATE.start_main_~main__x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| .cse0)) (= |c_ULTIMATE.start_main_~main__x~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 12:44:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-11-23 12:44:50,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:45:00,805 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-11-23 12:45:02,960 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-11-23 12:45:08,299 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:45:15,524 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-11-23 12:45:17,815 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-11-23 12:45:23,407 WARN L227 SmtUtils]: Spent 5.59s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:45:29,385 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:45:31,823 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-11-23 12:45:34,284 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-11-23 12:45:40,528 WARN L227 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:45:42,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:45:42,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9401004] [2021-11-23 12:45:42,609 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 6867 column 7: push canceled [2021-11-23 12:45:42,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [432798929] [2021-11-23 12:45:42,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:45:42,610 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 12:45:42,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/cvc4 [2021-11-23 12:45:42,611 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 12:45:42,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-23 12:45:51,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-23 12:45:51,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:45:51,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 12:45:51,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:51,098 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function currentRoundingMode is already defined. [2021-11-23 12:45:51,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092677315] [2021-11-23 12:45:51,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:45:51,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:51,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:51,102 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:51,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 12:49:53,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-23 12:49:53,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:49:54,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 12:49:54,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:49:54,504 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function currentRoundingMode is already defined. [2021-11-23 12:49:54,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:49:54,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-23 12:49:54,504 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-23 12:49:54,504 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-23 12:49:54,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 12:49:54,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:49:54,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-11-23 12:49:55,133 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2021-11-23 12:49:55,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2021-11-23 12:49:55,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:49:55,187 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1] [2021-11-23 12:49:55,189 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:49:55,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:49:55 BoogieIcfgContainer [2021-11-23 12:49:55,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:49:55,207 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:49:55,207 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:49:55,207 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:49:55,208 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:45" (3/4) ... [2021-11-23 12:49:55,212 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 12:49:55,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:49:55,214 INFO L158 Benchmark]: Toolchain (without parser) took 554787.61ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 28.6MB in the beginning and 34.0MB in the end (delta: -5.4MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2021-11-23 12:49:55,214 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 52.4MB. Free memory was 33.0MB in the beginning and 33.0MB in the end (delta: 39.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:49:55,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.37ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 28.4MB in the beginning and 42.2MB in the end (delta: -13.8MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-11-23 12:49:55,216 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.91ms. Allocated memory is still 65.0MB. Free memory was 42.2MB in the beginning and 47.8MB in the end (delta: -5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 12:49:55,216 INFO L158 Benchmark]: Boogie Preprocessor took 27.15ms. Allocated memory is still 65.0MB. Free memory was 47.7MB in the beginning and 46.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:49:55,217 INFO L158 Benchmark]: RCFGBuilder took 4325.72ms. Allocated memory is still 65.0MB. Free memory was 46.6MB in the beginning and 38.8MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 12:49:55,217 INFO L158 Benchmark]: TraceAbstraction took 549965.84ms. Allocated memory is still 65.0MB. Free memory was 38.2MB in the beginning and 34.4MB in the end (delta: 3.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2021-11-23 12:49:55,218 INFO L158 Benchmark]: Witness Printer took 5.97ms. Allocated memory is still 65.0MB. Free memory was 34.4MB in the beginning and 34.0MB in the end (delta: 404.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:49:55,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 52.4MB. Free memory was 33.0MB in the beginning and 33.0MB in the end (delta: 39.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.37ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 28.4MB in the beginning and 42.2MB in the end (delta: -13.8MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.91ms. Allocated memory is still 65.0MB. Free memory was 42.2MB in the beginning and 47.8MB in the end (delta: -5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.15ms. Allocated memory is still 65.0MB. Free memory was 47.7MB in the beginning and 46.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 4325.72ms. Allocated memory is still 65.0MB. Free memory was 46.6MB in the beginning and 38.8MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 549965.84ms. Allocated memory is still 65.0MB. Free memory was 38.2MB in the beginning and 34.4MB in the end (delta: 3.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Witness Printer took 5.97ms. Allocated memory is still 65.0MB. Free memory was 34.4MB in the beginning and 34.0MB in the end (delta: 404.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L9] double main__x = 1.0; [L10] double main__x1 = main__x / 1.6; [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 [L25] COND TRUE __VERIFIER_assert__cond == 0 [L27] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 549.9s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 40.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 15.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 13.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 49 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 15 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 18 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 10.9s SatisfiabilityAnalysisTime, 245.5s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 507 SizeOfPredicates, 22 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 12:49:55,462 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-23 12:49:55,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae0b0e4-c970-43ff-a329-f0773468aadd/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN