./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg --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 ccbd0741eabce6aba13a6c9228bba784baa730da91d68b5dbc413b43d2eb52c3 .................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg --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 ccbd0741eabce6aba13a6c9228bba784baa730da91d68b5dbc413b43d2eb52c3 .................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:52:10,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:52:10,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:52:10,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:52:10,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:52:10,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:52:10,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:52:10,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:52:10,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:52:10,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:52:10,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:52:10,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:52:10,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:52:10,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:52:10,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:52:10,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:52:10,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:52:10,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:52:10,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:52:10,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:52:10,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:52:10,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:52:10,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:52:10,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:52:10,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:52:10,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:52:10,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:52:10,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:52:10,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:52:10,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:52:10,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:52:10,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:52:10,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:52:10,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:52:10,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:52:10,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:52:10,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:52:10,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:52:10,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:52:10,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:52:10,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:52:10,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:52:10,425 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:52:10,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:52:10,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:52:10,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:52:10,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:52:10,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:52:10,427 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:52:10,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:52:10,428 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:52:10,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:52:10,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:52:10,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:52:10,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:52:10,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:52:10,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:52:10,430 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:52:10,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:52:10,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:52:10,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:52:10,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:52:10,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:52:10,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:52:10,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:52:10,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:52:10,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:52:10,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:52:10,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:52:10,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:52:10,433 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:52:10,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:52:10,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:52:10,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:52:10,434 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_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccbd0741eabce6aba13a6c9228bba784baa730da91d68b5dbc413b43d2eb52c3 [2021-10-28 08:52:10,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:52:10,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:52:10,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:52:10,766 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:52:10,767 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:52:10,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-28 08:52:10,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/data/68ff1dbec/b2b0774089e241349ec0b832531f1877/FLAG429ba25f6 [2021-10-28 08:52:11,360 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:52:11,361 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-28 08:52:11,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/data/68ff1dbec/b2b0774089e241349ec0b832531f1877/FLAG429ba25f6 [2021-10-28 08:52:11,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/data/68ff1dbec/b2b0774089e241349ec0b832531f1877 [2021-10-28 08:52:11,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:52:11,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:52:11,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:52:11,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:52:11,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:52:11,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:52:11" (1/1) ... [2021-10-28 08:52:11,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e55c1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:11, skipping insertion in model container [2021-10-28 08:52:11,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:52:11" (1/1) ... [2021-10-28 08:52:11,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:52:11,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:52:11,968 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-28 08:52:11,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:52:11,988 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:52:12,011 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-28 08:52:12,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:52:12,028 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:52:12,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:12 WrapperNode [2021-10-28 08:52:12,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:52:12,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:52:12,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:52:12,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:52:12,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:12" (1/1) ... [2021-10-28 08:52:12,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:12" (1/1) ... [2021-10-28 08:52:12,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:52:12,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:52:12,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:52:12,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:52:12,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:12" (1/1) ... [2021-10-28 08:52:12,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:12" (1/1) ... [2021-10-28 08:52:12,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:12" (1/1) ... [2021-10-28 08:52:12,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:12" (1/1) ... [2021-10-28 08:52:12,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:12" (1/1) ... [2021-10-28 08:52:12,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:12" (1/1) ... [2021-10-28 08:52:12,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:12" (1/1) ... [2021-10-28 08:52:12,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:52:12,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:52:12,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:52:12,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:52:12,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:12" (1/1) ... [2021-10-28 08:52:12,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:52:12,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:12,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:12,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:52:12,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:52:12,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:52:12,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:52:12,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:52:12,341 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:52:12,352 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 08:52:12,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:12 BoogieIcfgContainer [2021-10-28 08:52:12,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:52:12,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:52:12,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:52:12,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:52:12,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:52:11" (1/3) ... [2021-10-28 08:52:12,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ab3db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:52:12, skipping insertion in model container [2021-10-28 08:52:12,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:12" (2/3) ... [2021-10-28 08:52:12,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ab3db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:52:12, skipping insertion in model container [2021-10-28 08:52:12,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:12" (3/3) ... [2021-10-28 08:52:12,366 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2021-10-28 08:52:12,372 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:52:12,373 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:52:12,449 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:52:12,455 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:52:12,457 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:52:12,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:12,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 08:52:12,482 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:12,483 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:52:12,484 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:12,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:12,490 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-28 08:52:12,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:12,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180412319] [2021-10-28 08:52:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:12,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:12,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:12,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180412319] [2021-10-28 08:52:12,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180412319] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:12,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:12,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:52:12,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719674174] [2021-10-28 08:52:12,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:52:12,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:12,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:52:12,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:52:12,773 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:12,787 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 08:52:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:52:12,789 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 08:52:12,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:12,796 INFO L225 Difference]: With dead ends: 19 [2021-10-28 08:52:12,797 INFO L226 Difference]: Without dead ends: 7 [2021-10-28 08:52:12,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:52:12,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-28 08:52:12,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 08:52:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-28 08:52:12,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-28 08:52:12,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:12,830 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-28 08:52:12,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:12,830 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-28 08:52:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 08:52:12,831 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:12,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:52:12,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:52:12,832 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:12,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:12,836 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-28 08:52:12,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:12,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978593805] [2021-10-28 08:52:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:12,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:12,888 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:52:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:12,942 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:52:12,943 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:52:12,944 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:52:12,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:52:12,950 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 08:52:12,953 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:52:12,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:52:12 BoogieIcfgContainer [2021-10-28 08:52:12,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:52:12,982 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:52:12,982 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:52:12,982 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:52:12,983 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:12" (3/4) ... [2021-10-28 08:52:12,990 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:52:12,990 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:52:12,992 INFO L168 Benchmark]: Toolchain (without parser) took 1269.86 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 67.2 MB in the beginning and 70.0 MB in the end (delta: -2.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:12,993 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory is still 54.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:52:12,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.90 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 67.0 MB in the beginning and 102.9 MB in the end (delta: -35.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:12,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.98 ms. Allocated memory is still 127.9 MB. Free memory was 102.9 MB in the beginning and 101.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:13,002 INFO L168 Benchmark]: Boogie Preprocessor took 20.17 ms. Allocated memory is still 127.9 MB. Free memory was 101.5 MB in the beginning and 100.8 MB in the end (delta: 647.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:52:13,004 INFO L168 Benchmark]: RCFGBuilder took 271.63 ms. Allocated memory is still 127.9 MB. Free memory was 100.8 MB in the beginning and 91.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:13,004 INFO L168 Benchmark]: TraceAbstraction took 624.53 ms. Allocated memory is still 127.9 MB. Free memory was 91.0 MB in the beginning and 70.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:13,005 INFO L168 Benchmark]: Witness Printer took 8.28 ms. Allocated memory is still 127.9 MB. Free memory is still 70.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:52:13,012 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory is still 54.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.90 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 67.0 MB in the beginning and 102.9 MB in the end (delta: -35.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.98 ms. Allocated memory is still 127.9 MB. Free memory was 102.9 MB in the beginning and 101.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.17 ms. Allocated memory is still 127.9 MB. Free memory was 101.5 MB in the beginning and 100.8 MB in the end (delta: 647.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 271.63 ms. Allocated memory is still 127.9 MB. Free memory was 100.8 MB in the beginning and 91.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 624.53 ms. Allocated memory is still 127.9 MB. Free memory was 91.0 MB in the beginning and 70.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 8.28 ms. Allocated memory is still 127.9 MB. Free memory is still 70.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 29]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 28, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 08:52:13,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:52:15,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:52:15,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:52:15,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:52:15,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:52:15,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:52:15,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:52:15,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:52:15,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:52:15,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:52:15,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:52:15,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:52:15,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:52:15,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:52:15,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:52:15,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:52:15,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:52:15,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:52:15,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:52:15,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:52:15,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:52:15,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:52:15,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:52:15,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:52:15,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:52:15,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:52:15,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:52:15,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:52:15,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:52:15,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:52:15,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:52:15,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:52:15,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:52:15,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:52:15,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:52:15,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:52:15,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:52:15,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:52:15,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:52:15,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:52:15,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:52:15,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 08:52:15,737 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:52:15,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:52:15,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:52:15,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:52:15,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:52:15,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:52:15,741 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:52:15,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:52:15,742 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:52:15,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:52:15,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:52:15,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:52:15,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:52:15,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:52:15,744 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:52:15,744 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:52:15,745 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:52:15,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:52:15,745 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:52:15,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:52:15,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:52:15,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:52:15,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:52:15,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:52:15,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:52:15,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:52:15,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:52:15,748 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:52:15,748 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:52:15,748 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:52:15,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:52:15,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:52:15,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:52:15,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:52:15,749 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_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccbd0741eabce6aba13a6c9228bba784baa730da91d68b5dbc413b43d2eb52c3 [2021-10-28 08:52:16,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:52:16,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:52:16,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:52:16,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:52:16,229 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:52:16,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-28 08:52:16,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/data/a03a69fee/9b08b3ea1b2c4af7a4740848ed7dc3c4/FLAG8bb60f160 [2021-10-28 08:52:16,933 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:52:16,934 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-28 08:52:16,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/data/a03a69fee/9b08b3ea1b2c4af7a4740848ed7dc3c4/FLAG8bb60f160 [2021-10-28 08:52:17,242 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/data/a03a69fee/9b08b3ea1b2c4af7a4740848ed7dc3c4 [2021-10-28 08:52:17,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:52:17,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:52:17,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:52:17,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:52:17,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:52:17,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:52:17" (1/1) ... [2021-10-28 08:52:17,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3cb7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:17, skipping insertion in model container [2021-10-28 08:52:17,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:52:17" (1/1) ... [2021-10-28 08:52:17,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:52:17,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:52:17,506 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-28 08:52:17,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:52:17,525 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:52:17,549 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-28 08:52:17,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:52:17,576 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:52:17,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:17 WrapperNode [2021-10-28 08:52:17,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:52:17,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:52:17,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:52:17,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:52:17,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:17" (1/1) ... [2021-10-28 08:52:17,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:17" (1/1) ... [2021-10-28 08:52:17,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:52:17,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:52:17,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:52:17,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:52:17,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:17" (1/1) ... [2021-10-28 08:52:17,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:17" (1/1) ... [2021-10-28 08:52:17,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:17" (1/1) ... [2021-10-28 08:52:17,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:17" (1/1) ... [2021-10-28 08:52:17,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:17" (1/1) ... [2021-10-28 08:52:17,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:17" (1/1) ... [2021-10-28 08:52:17,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:17" (1/1) ... [2021-10-28 08:52:17,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:52:17,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:52:17,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:52:17,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:52:17,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:17" (1/1) ... [2021-10-28 08:52:17,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:52:17,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:17,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:17,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:52:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 08:52:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:52:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:52:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:52:20,094 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:52:20,094 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 08:52:20,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:20 BoogieIcfgContainer [2021-10-28 08:52:20,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:52:20,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:52:20,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:52:20,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:52:20,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:52:17" (1/3) ... [2021-10-28 08:52:20,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1454ebbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:52:20, skipping insertion in model container [2021-10-28 08:52:20,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:17" (2/3) ... [2021-10-28 08:52:20,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1454ebbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:52:20, skipping insertion in model container [2021-10-28 08:52:20,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:20" (3/3) ... [2021-10-28 08:52:20,106 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2021-10-28 08:52:20,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:52:20,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:52:20,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:52:20,168 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:52:20,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:52:20,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:20,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 08:52:20,186 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:20,187 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:52:20,188 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:20,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-28 08:52:20,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:52:20,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106773696] [2021-10-28 08:52:20,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:20,208 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:52:20,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:52:20,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:52:20,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:52:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:20,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 08:52:20,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:20,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:52:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:20,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:52:20,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106773696] [2021-10-28 08:52:20,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106773696] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:20,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:20,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 08:52:20,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480008012] [2021-10-28 08:52:20,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:52:20,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:52:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:52:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:52:20,922 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:20,935 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 08:52:20,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:52:20,937 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 08:52:20,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:20,944 INFO L225 Difference]: With dead ends: 19 [2021-10-28 08:52:20,945 INFO L226 Difference]: Without dead ends: 7 [2021-10-28 08:52:20,947 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:52:20,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-28 08:52:20,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 08:52:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:20,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-28 08:52:20,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-28 08:52:20,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:20,977 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-28 08:52:20,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-28 08:52:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 08:52:20,978 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:20,978 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:52:20,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:21,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:52:21,194 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:21,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:21,195 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-28 08:52:21,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:52:21,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790212246] [2021-10-28 08:52:21,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:21,196 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:52:21,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:52:21,197 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:52:21,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:52:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:32,938 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:52:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:35,781 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 08:52:35,781 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:52:35,782 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:52:35,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:35,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:52:35,987 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 08:52:35,990 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:52:36,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:52:36 BoogieIcfgContainer [2021-10-28 08:52:36,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:52:36,007 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:52:36,007 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:52:36,008 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:52:36,008 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:20" (3/4) ... [2021-10-28 08:52:36,010 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 08:52:36,054 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:52:36,054 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:52:36,056 INFO L168 Benchmark]: Toolchain (without parser) took 18808.82 ms. Allocated memory is still 60.8 MB. Free memory was 40.6 MB in the beginning and 31.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:36,056 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 60.8 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:52:36,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.78 ms. Allocated memory is still 60.8 MB. Free memory was 40.4 MB in the beginning and 30.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:36,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 60.8 MB. Free memory was 30.1 MB in the beginning and 28.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:36,057 INFO L168 Benchmark]: Boogie Preprocessor took 40.80 ms. Allocated memory is still 60.8 MB. Free memory was 28.7 MB in the beginning and 27.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:52:36,058 INFO L168 Benchmark]: RCFGBuilder took 2429.76 ms. Allocated memory is still 60.8 MB. Free memory was 27.5 MB in the beginning and 36.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:36,058 INFO L168 Benchmark]: TraceAbstraction took 15908.29 ms. Allocated memory is still 60.8 MB. Free memory was 35.7 MB in the beginning and 33.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:36,059 INFO L168 Benchmark]: Witness Printer took 46.99 ms. Allocated memory is still 60.8 MB. Free memory was 33.2 MB in the beginning and 31.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:36,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 60.8 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.78 ms. Allocated memory is still 60.8 MB. Free memory was 40.4 MB in the beginning and 30.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 60.8 MB. Free memory was 30.1 MB in the beginning and 28.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.80 ms. Allocated memory is still 60.8 MB. Free memory was 28.7 MB in the beginning and 27.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2429.76 ms. Allocated memory is still 60.8 MB. Free memory was 27.5 MB in the beginning and 36.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15908.29 ms. Allocated memory is still 60.8 MB. Free memory was 35.7 MB in the beginning and 33.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. * Witness Printer took 46.99 ms. Allocated memory is still 60.8 MB. Free memory was 33.2 MB in the beginning and 31.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 12.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 08:52:36,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfdda05-67ca-4512-a7e0-6de6b6574b37/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...