./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer --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 785f64f547c61374a0b1066dd48b421973c44157 ............................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer --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 785f64f547c61374a0b1066dd48b421973c44157 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-29 19:33:11,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:33:11,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:33:11,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:33:11,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:33:11,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:33:11,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:33:11,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:33:11,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:33:11,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:33:11,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:33:11,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:33:11,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:33:11,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:33:11,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:33:11,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:33:11,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:33:11,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:33:11,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:33:11,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:33:11,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:33:11,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:33:11,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:33:11,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:33:11,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:33:11,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:33:11,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:33:11,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:33:11,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:33:11,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:33:11,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:33:11,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:33:11,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:33:11,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:33:11,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:33:11,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:33:11,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:33:11,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:33:11,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:33:11,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:33:11,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:33:11,965 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:33:12,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:33:12,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:33:12,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:33:12,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:33:12,017 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:33:12,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:33:12,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:33:12,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:33:12,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:33:12,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:33:12,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:33:12,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:33:12,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:33:12,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:33:12,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:33:12,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:33:12,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:33:12,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:33:12,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:33:12,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:33:12,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:33:12,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:33:12,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:33:12,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:33:12,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:33:12,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:33:12,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:33:12,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:33:12,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:33:12,033 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-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 785f64f547c61374a0b1066dd48b421973c44157 [2020-11-29 19:33:12,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:33:12,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:33:12,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:33:12,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:33:12,386 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:33:12,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c [2020-11-29 19:33:12,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/data/47f7fa39d/02405012ffe3430eb7d7179efb9697b9/FLAGaec64ae74 [2020-11-29 19:33:13,001 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:33:13,001 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c [2020-11-29 19:33:13,025 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/data/47f7fa39d/02405012ffe3430eb7d7179efb9697b9/FLAGaec64ae74 [2020-11-29 19:33:13,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/data/47f7fa39d/02405012ffe3430eb7d7179efb9697b9 [2020-11-29 19:33:13,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:33:13,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:33:13,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:33:13,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:33:13,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:33:13,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387ff989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13, skipping insertion in model container [2020-11-29 19:33:13,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:33:13,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:33:13,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:33:13,556 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:33:13,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:33:13,594 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:33:13,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13 WrapperNode [2020-11-29 19:33:13,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:33:13,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:33:13,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:33:13,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:33:13,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:33:13,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:33:13,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:33:13,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:33:13,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:33:13,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:33:13,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:33:13,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:33:13,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:33:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:33:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:33:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:33:13,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:33:14,017 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:33:14,017 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-29 19:33:14,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:14 BoogieIcfgContainer [2020-11-29 19:33:14,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:33:14,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:33:14,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:33:14,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:33:14,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:33:13" (1/3) ... [2020-11-29 19:33:14,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3f5b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:33:14, skipping insertion in model container [2020-11-29 19:33:14,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (2/3) ... [2020-11-29 19:33:14,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3f5b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:33:14, skipping insertion in model container [2020-11-29 19:33:14,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:14" (3/3) ... [2020-11-29 19:33:14,029 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound5.c [2020-11-29 19:33:14,043 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:33:14,047 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 19:33:14,062 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 19:33:14,092 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:33:14,093 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:33:14,093 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:33:14,093 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:33:14,093 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:33:14,093 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:33:14,094 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:33:14,094 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:33:14,126 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-29 19:33:14,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:33:14,131 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:33:14,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:33:14,133 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:33:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:33:14,139 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 19:33:14,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:33:14,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602043706] [2020-11-29 19:33:14,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:33:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:14,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:14,466 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:14,499 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:33:14,500 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:33:14,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:33:14,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:33:14 BoogieIcfgContainer [2020-11-29 19:33:14,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:33:14,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:33:14,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:33:14,570 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:33:14,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:14" (3/4) ... [2020-11-29 19:33:14,580 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:33:14,581 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:33:14,585 INFO L168 Benchmark]: Toolchain (without parser) took 1239.83 ms. Allocated memory is still 96.5 MB. Free memory was 76.3 MB in the beginning and 75.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:33:14,586 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:33:14,589 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.87 ms. Allocated memory is still 96.5 MB. Free memory was 76.3 MB in the beginning and 66.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:33:14,591 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.02 ms. Allocated memory is still 96.5 MB. Free memory was 66.4 MB in the beginning and 65.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:33:14,592 INFO L168 Benchmark]: Boogie Preprocessor took 27.13 ms. Allocated memory is still 96.5 MB. Free memory was 65.0 MB in the beginning and 63.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:33:14,593 INFO L168 Benchmark]: RCFGBuilder took 356.47 ms. Allocated memory is still 96.5 MB. Free memory was 63.8 MB in the beginning and 52.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:33:14,595 INFO L168 Benchmark]: TraceAbstraction took 522.71 ms. Allocated memory is still 96.5 MB. Free memory was 51.8 MB in the beginning and 39.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:33:14,596 INFO L168 Benchmark]: Witness Printer took 33.84 ms. Allocated memory is still 96.5 MB. Free memory was 39.8 MB in the beginning and 75.2 MB in the end (delta: -35.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:33:14,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.87 ms. Allocated memory is still 96.5 MB. Free memory was 76.3 MB in the beginning and 66.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.02 ms. Allocated memory is still 96.5 MB. Free memory was 66.4 MB in the beginning and 65.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.13 ms. Allocated memory is still 96.5 MB. Free memory was 65.0 MB in the beginning and 63.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 356.47 ms. Allocated memory is still 96.5 MB. Free memory was 63.8 MB in the beginning and 52.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 522.71 ms. Allocated memory is still 96.5 MB. Free memory was 51.8 MB in the beginning and 39.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 33.84 ms. Allocated memory is still 96.5 MB. Free memory was 39.8 MB in the beginning and 75.2 MB in the end (delta: -35.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<5 [L17] COND TRUE !(cond) VAL [counter=1] [L10] __assert_fail("0", "freire1.c", 10, "reach_error") VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=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, 6 NumberOfCodeBlocks, 6 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:33:17,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:33:17,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:33:17,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:33:17,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:33:17,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:33:17,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:33:17,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:33:17,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:33:17,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:33:17,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:33:17,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:33:17,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:33:17,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:33:17,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:33:17,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:33:17,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:33:17,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:33:17,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:33:17,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:33:17,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:33:17,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:33:17,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:33:17,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:33:17,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:33:17,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:33:17,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:33:17,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:33:17,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:33:17,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:33:17,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:33:17,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:33:17,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:33:17,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:33:17,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:33:17,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:33:17,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:33:17,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:33:17,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:33:17,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:33:17,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:33:17,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 19:33:17,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:33:17,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:33:17,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:33:17,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:33:17,662 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:33:17,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:33:17,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:33:17,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:33:17,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:33:17,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:33:17,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:33:17,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:33:17,665 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:33:17,665 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:33:17,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:33:17,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:33:17,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:33:17,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:33:17,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:33:17,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:33:17,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:33:17,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:33:17,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:33:17,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:33:17,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:33:17,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:33:17,669 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:33:17,669 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:33:17,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:33:17,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:33:17,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:33:17,670 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-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 785f64f547c61374a0b1066dd48b421973c44157 [2020-11-29 19:33:18,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:33:18,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:33:18,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:33:18,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:33:18,141 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:33:18,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c [2020-11-29 19:33:18,215 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/data/9618c9fe5/ccaf2d5bcfd44814aa79cfcfcb77836b/FLAG97781dd62 [2020-11-29 19:33:18,778 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:33:18,778 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c [2020-11-29 19:33:18,786 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/data/9618c9fe5/ccaf2d5bcfd44814aa79cfcfcb77836b/FLAG97781dd62 [2020-11-29 19:33:19,134 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/data/9618c9fe5/ccaf2d5bcfd44814aa79cfcfcb77836b [2020-11-29 19:33:19,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:33:19,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:33:19,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:33:19,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:33:19,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:33:19,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:33:19" (1/1) ... [2020-11-29 19:33:19,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dd53ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:19, skipping insertion in model container [2020-11-29 19:33:19,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:33:19" (1/1) ... [2020-11-29 19:33:19,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:33:19,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:33:19,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:33:19,435 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:33:19,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:33:19,501 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:33:19,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:19 WrapperNode [2020-11-29 19:33:19,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:33:19,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:33:19,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:33:19,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:33:19,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:19" (1/1) ... [2020-11-29 19:33:19,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:19" (1/1) ... [2020-11-29 19:33:19,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:33:19,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:33:19,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:33:19,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:33:19,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:19" (1/1) ... [2020-11-29 19:33:19,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:19" (1/1) ... [2020-11-29 19:33:19,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:19" (1/1) ... [2020-11-29 19:33:19,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:19" (1/1) ... [2020-11-29 19:33:19,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:19" (1/1) ... [2020-11-29 19:33:19,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:19" (1/1) ... [2020-11-29 19:33:19,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:19" (1/1) ... [2020-11-29 19:33:19,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:33:19,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:33:19,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:33:19,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:33:19,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:33:19,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:33:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:33:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:33:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:33:25,134 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:33:25,134 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-29 19:33:25,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:25 BoogieIcfgContainer [2020-11-29 19:33:25,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:33:25,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:33:25,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:33:25,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:33:25,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:33:19" (1/3) ... [2020-11-29 19:33:25,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5900ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:33:25, skipping insertion in model container [2020-11-29 19:33:25,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:19" (2/3) ... [2020-11-29 19:33:25,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5900ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:33:25, skipping insertion in model container [2020-11-29 19:33:25,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:25" (3/3) ... [2020-11-29 19:33:25,146 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound5.c [2020-11-29 19:33:25,158 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:33:25,165 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 19:33:25,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 19:33:25,204 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:33:25,204 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:33:25,205 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:33:25,205 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:33:25,205 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:33:25,205 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:33:25,205 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:33:25,206 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:33:25,219 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-29 19:33:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:33:25,224 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:33:25,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:33:25,225 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:33:25,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:33:25,232 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 19:33:25,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:33:25,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644253239] [2020-11-29 19:33:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 19:33:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:33:28,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:33:28,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:33:30,673 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 19:33:51,940 WARN L193 SmtUtils]: Spent 8.58 s on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 19:33:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:33:51,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:33:54,365 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from false [2020-11-29 19:33:56,433 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from true [2020-11-29 19:33:58,492 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from false [2020-11-29 19:34:00,544 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from true [2020-11-29 19:34:00,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:34:00,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644253239] [2020-11-29 19:34:00,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:34:00,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2020-11-29 19:34:00,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703040777] [2020-11-29 19:34:00,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:34:00,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:34:00,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:34:00,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=18, Unknown=6, NotChecked=18, Total=56 [2020-11-29 19:34:00,574 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 8 states. [2020-11-29 19:34:03,826 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32)))) is different from false [2020-11-29 19:34:05,877 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32)))) is different from true [2020-11-29 19:34:08,459 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= (_ bv0 32) c_ULTIMATE.start_main_~r~0)) is different from true [2020-11-29 19:34:10,516 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (or (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_prenex_1) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) .cse1) (not .cse1))) is different from false [2020-11-29 19:34:39,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:34:39,694 INFO L93 Difference]: Finished difference Result 36 states and 51 transitions. [2020-11-29 19:34:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:34:39,762 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2020-11-29 19:34:39,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:34:39,771 INFO L225 Difference]: With dead ends: 36 [2020-11-29 19:34:39,771 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 19:34:39,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=20, Invalid=20, Unknown=10, NotChecked=60, Total=110 [2020-11-29 19:34:39,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 19:34:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 10. [2020-11-29 19:34:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 19:34:39,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-29 19:34:39,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2020-11-29 19:34:39,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:34:39,814 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-29 19:34:39,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:34:39,814 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-29 19:34:39,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 19:34:39,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:34:39,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:34:40,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:34:40,017 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:34:40,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:34:40,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1806863068, now seen corresponding path program 1 times [2020-11-29 19:34:40,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:34:40,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566077701] [2020-11-29 19:34:40,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 19:34:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:40,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:34:40,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:34:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:34:40,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:34:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:34:40,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566077701] [2020-11-29 19:34:40,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:34:40,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 19:34:40,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396134637] [2020-11-29 19:34:40,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:34:40,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:34:40,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:34:40,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:34:40,677 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 6 states. [2020-11-29 19:34:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:34:43,866 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-11-29 19:34:43,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:34:43,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-11-29 19:34:43,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:34:43,868 INFO L225 Difference]: With dead ends: 16 [2020-11-29 19:34:43,868 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 19:34:43,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:34:43,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 19:34:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 19:34:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 19:34:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-11-29 19:34:43,873 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2020-11-29 19:34:43,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:34:43,874 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-29 19:34:43,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:34:43,874 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-11-29 19:34:43,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:34:43,874 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:34:43,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:34:44,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:34:44,082 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:34:44,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:34:44,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1275448533, now seen corresponding path program 1 times [2020-11-29 19:34:44,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:34:44,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981724353] [2020-11-29 19:34:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 19:34:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:44,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:34:44,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:34:46,703 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))))) (or (and (not .cse0) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))))) is different from false [2020-11-29 19:34:48,771 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))))) (or (and (not .cse0) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))))) is different from true [2020-11-29 19:34:48,787 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:34:48,787 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:34:50,858 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from false [2020-11-29 19:34:52,923 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from true [2020-11-29 19:34:52,935 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:34:59,187 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) is different from false [2020-11-29 19:34:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:34:59,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:35:01,298 WARN L838 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) is different from false [2020-11-29 19:35:03,368 WARN L860 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) is different from true [2020-11-29 19:35:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:35:03,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981724353] [2020-11-29 19:35:03,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:35:03,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-11-29 19:35:03,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602488602] [2020-11-29 19:35:03,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:35:03,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:35:03,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:35:03,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=4, Unknown=7, NotChecked=20, Total=42 [2020-11-29 19:35:03,405 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 7 states. [2020-11-29 19:35:07,700 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))))) (.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (or (and (not .cse0) .cse1) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) (or .cse0 .cse1))) is different from false [2020-11-29 19:35:09,792 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))))) (.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (or (and (not .cse0) .cse1) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) (or .cse0 .cse1))) is different from true [2020-11-29 19:35:11,869 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) is different from false [2020-11-29 19:35:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:35:14,089 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-29 19:35:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:35:14,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-29 19:35:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:35:14,091 INFO L225 Difference]: With dead ends: 16 [2020-11-29 19:35:14,091 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 19:35:14,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=15, Invalid=5, Unknown=10, NotChecked=42, Total=72 [2020-11-29 19:35:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 19:35:14,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 19:35:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 19:35:14,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-29 19:35:14,095 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2020-11-29 19:35:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:35:14,095 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-29 19:35:14,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:35:14,096 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-29 19:35:14,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:35:14,096 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:35:14,096 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:35:14,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 19:35:14,297 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:35:14,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:35:14,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1673782672, now seen corresponding path program 1 times [2020-11-29 19:35:14,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:35:14,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785384128] [2020-11-29 19:35:14,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 19:35:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:35:15,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:35:15,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:35:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:35:15,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:35:15,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:35:15,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785384128] [2020-11-29 19:35:15,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:35:15,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-11-29 19:35:15,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107824339] [2020-11-29 19:35:15,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:35:15,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:35:15,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:35:15,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:35:15,467 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2020-11-29 19:35:20,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:35:20,299 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-11-29 19:35:20,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:35:20,300 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-29 19:35:20,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:35:20,301 INFO L225 Difference]: With dead ends: 24 [2020-11-29 19:35:20,301 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 19:35:20,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:35:20,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 19:35:20,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-29 19:35:20,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 19:35:20,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-29 19:35:20,306 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2020-11-29 19:35:20,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:35:20,306 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-29 19:35:20,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:35:20,306 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-29 19:35:20,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 19:35:20,307 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:35:20,307 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-29 19:35:20,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 19:35:20,508 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:35:20,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:35:20,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1883886344, now seen corresponding path program 2 times [2020-11-29 19:35:20,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:35:20,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91018593] [2020-11-29 19:35:20,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 19:35:22,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:35:22,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:35:22,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:35:22,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:35:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:35:22,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:35:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:35:23,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91018593] [2020-11-29 19:35:23,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:35:23,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-29 19:35:23,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029782970] [2020-11-29 19:35:23,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 19:35:23,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:35:23,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 19:35:23,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:35:23,134 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 12 states. [2020-11-29 19:35:32,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:35:32,761 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-11-29 19:35:32,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:35:32,762 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-11-29 19:35:32,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:35:32,763 INFO L225 Difference]: With dead ends: 32 [2020-11-29 19:35:32,763 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 19:35:32,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:35:32,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 19:35:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 19:35:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 19:35:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-11-29 19:35:32,770 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 19 [2020-11-29 19:35:32,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:35:32,771 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-11-29 19:35:32,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 19:35:32,771 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-11-29 19:35:32,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 19:35:32,772 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:35:32,772 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2020-11-29 19:35:32,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 19:35:32,972 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:35:32,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:35:32,973 INFO L82 PathProgramCache]: Analyzing trace with hash -532771744, now seen corresponding path program 3 times [2020-11-29 19:35:32,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:35:32,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026338641] [2020-11-29 19:35:32,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-29 19:36:13,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-29 19:36:13,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-29 19:36:13,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:37:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:37:50,709 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:37:51,020 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 19:37:51,021 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:37:51,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 19:37:51,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:37:51 BoogieIcfgContainer [2020-11-29 19:37:51,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:37:51,266 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:37:51,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:37:51,266 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:37:51,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:25" (3/4) ... [2020-11-29 19:37:51,269 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:37:51,329 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d71a1579-1ea6-44d1-b9b1-febbcc798621/bin/uautomizer/witness.graphml [2020-11-29 19:37:51,329 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:37:51,330 INFO L168 Benchmark]: Toolchain (without parser) took 272190.67 ms. Allocated memory is still 69.2 MB. Free memory was 48.7 MB in the beginning and 36.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:37:51,331 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 31.5 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:37:51,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.81 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 38.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:37:51,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.62 ms. Allocated memory is still 69.2 MB. Free memory was 38.3 MB in the beginning and 53.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:37:51,333 INFO L168 Benchmark]: Boogie Preprocessor took 64.57 ms. Allocated memory is still 69.2 MB. Free memory was 53.8 MB in the beginning and 52.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:37:51,333 INFO L168 Benchmark]: RCFGBuilder took 5479.00 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 40.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:37:51,334 INFO L168 Benchmark]: TraceAbstraction took 266127.22 ms. Allocated memory is still 69.2 MB. Free memory was 39.8 MB in the beginning and 39.8 MB in the end (delta: -11.2 kB). Peak memory consumption was 2.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:37:51,334 INFO L168 Benchmark]: Witness Printer took 63.16 ms. Allocated memory is still 69.2 MB. Free memory was 39.8 MB in the beginning and 36.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:37:51,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 31.5 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.81 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 38.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.62 ms. Allocated memory is still 69.2 MB. Free memory was 38.3 MB in the beginning and 53.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.57 ms. Allocated memory is still 69.2 MB. Free memory was 53.8 MB in the beginning and 52.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 5479.00 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 40.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 266127.22 ms. Allocated memory is still 69.2 MB. Free memory was 39.8 MB in the beginning and 39.8 MB in the end (delta: -11.2 kB). Peak memory consumption was 2.0 MB. Max. memory is 16.1 GB. * Witness Printer took 63.16 ms. Allocated memory is still 69.2 MB. Free memory was 39.8 MB in the beginning and 36.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<5 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=1] [L32] EXPR counter++ VAL [counter=2] [L32] COND TRUE counter++<5 [L17] COND FALSE !(!(cond)) VAL [counter=2] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=2] [L32] EXPR counter++ VAL [counter=3] [L32] COND TRUE counter++<5 [L17] COND FALSE !(!(cond)) VAL [counter=3] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=3] [L32] EXPR counter++ VAL [counter=4] [L32] COND TRUE counter++<5 [L17] COND FALSE !(!(cond)) VAL [counter=4] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=4] [L32] EXPR counter++ VAL [counter=5] [L32] COND TRUE counter++<5 [L17] COND FALSE !(!(cond)) VAL [counter=5] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=5] [L32] EXPR counter++ VAL [counter=6] [L32] COND FALSE !(counter++<5) [L17] COND TRUE !(cond) VAL [counter=6] [L10] __assert_fail("0", "freire1.c", 10, "reach_error") VAL [counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 266.0s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 67.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 16 SDslu, 144 SDs, 0 SdLazy, 60 SolverSat, 12 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 50.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 55.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=5, 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, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 47.8s SatisfiabilityAnalysisTime, 51.9s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 94 ConstructedInterpolants, 3 QuantifiedInterpolants, 5417 SizeOfPredicates, 22 NumberOfNonLiveVariables, 205 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 0/40 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...