./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 264bfe6ed9d94f386b1000d33074dec83a5848c5 ......................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 264bfe6ed9d94f386b1000d33074dec83a5848c5 ................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-11-15 20:00:36,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:00:36,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:00:36,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:00:36,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:00:36,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:00:36,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:00:36,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:00:36,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:00:36,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:00:36,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:00:36,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:00:36,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:00:36,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:00:36,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:00:36,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:00:36,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:00:36,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:00:36,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:00:36,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:00:36,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:00:36,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:00:36,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:00:36,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:00:36,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:00:36,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:00:36,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:00:36,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:00:36,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:00:36,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:00:36,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:00:36,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:00:36,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:00:36,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:00:36,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:00:36,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:00:36,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:00:36,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:00:36,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:00:36,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:00:36,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:00:36,933 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 20:00:36,946 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:00:36,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:00:36,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:00:36,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:00:36,948 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:00:36,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:00:36,949 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:00:36,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:00:36,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:00:36,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:00:36,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:00:36,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:00:36,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:00:36,951 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:00:36,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:00:36,951 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:00:36,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:00:36,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:00:36,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:00:36,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:00:36,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:00:36,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:00:36,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:00:36,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:00:36,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:00:36,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:00:36,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:00:36,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:00:36,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_beca23f8-c445-4e10-8832-f996085decc2/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(__VERIFIER_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 -> 264bfe6ed9d94f386b1000d33074dec83a5848c5 [2019-11-15 20:00:36,993 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:00:37,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:00:37,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:00:37,016 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:00:37,016 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:00:37,017 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2019-11-15 20:00:37,079 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/data/60e4760ac/78ea4a66f736414f9d35f6fc1f382aec/FLAG2ce29724b [2019-11-15 20:00:37,431 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:00:37,432 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2019-11-15 20:00:37,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/data/60e4760ac/78ea4a66f736414f9d35f6fc1f382aec/FLAG2ce29724b [2019-11-15 20:00:37,811 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/data/60e4760ac/78ea4a66f736414f9d35f6fc1f382aec [2019-11-15 20:00:37,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:00:37,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:00:37,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:00:37,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:00:37,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:00:37,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:00:37" (1/1) ... [2019-11-15 20:00:37,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ee5fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:37, skipping insertion in model container [2019-11-15 20:00:37,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:00:37" (1/1) ... [2019-11-15 20:00:37,828 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:00:37,842 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:00:38,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:00:38,030 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:00:38,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:00:38,153 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:00:38,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:38 WrapperNode [2019-11-15 20:00:38,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:00:38,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:00:38,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:00:38,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:00:38,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:38" (1/1) ... [2019-11-15 20:00:38,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:38" (1/1) ... [2019-11-15 20:00:38,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:00:38,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:00:38,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:00:38,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:00:38,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:38" (1/1) ... [2019-11-15 20:00:38,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:38" (1/1) ... [2019-11-15 20:00:38,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:38" (1/1) ... [2019-11-15 20:00:38,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:38" (1/1) ... [2019-11-15 20:00:38,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:38" (1/1) ... [2019-11-15 20:00:38,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:38" (1/1) ... [2019-11-15 20:00:38,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:38" (1/1) ... [2019-11-15 20:00:38,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:00:38,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:00:38,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:00:38,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:00:38,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/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 [2019-11-15 20:00:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:00:38,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:00:38,481 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:00:38,482 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 20:00:38,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:00:38 BoogieIcfgContainer [2019-11-15 20:00:38,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:00:38,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:00:38,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:00:38,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:00:38,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:00:37" (1/3) ... [2019-11-15 20:00:38,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff42fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:00:38, skipping insertion in model container [2019-11-15 20:00:38,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:38" (2/3) ... [2019-11-15 20:00:38,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff42fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:00:38, skipping insertion in model container [2019-11-15 20:00:38,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:00:38" (3/3) ... [2019-11-15 20:00:38,490 INFO L109 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2019-11-15 20:00:38,499 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:00:38,506 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 20:00:38,516 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 20:00:38,538 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:00:38,538 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:00:38,538 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:00:38,538 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:00:38,538 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:00:38,539 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:00:38,539 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:00:38,539 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:00:38,549 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-15 20:00:38,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-15 20:00:38,555 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:00:38,555 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-15 20:00:38,557 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:00:38,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:00:38,561 INFO L82 PathProgramCache]: Analyzing trace with hash 30078084, now seen corresponding path program 1 times [2019-11-15 20:00:38,567 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:00:38,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955638433] [2019-11-15 20:00:38,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:00:38,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:00:38,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:00:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:00:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:00:38,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955638433] [2019-11-15 20:00:38,645 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:00:38,646 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 20:00:38,646 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052841217] [2019-11-15 20:00:38,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 20:00:38,649 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:00:38,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 20:00:38,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 20:00:38,661 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-15 20:00:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:00:38,672 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-11-15 20:00:38,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 20:00:38,674 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-15 20:00:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:00:38,680 INFO L225 Difference]: With dead ends: 19 [2019-11-15 20:00:38,681 INFO L226 Difference]: Without dead ends: 7 [2019-11-15 20:00:38,683 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 20:00:38,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-15 20:00:38,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-15 20:00:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 20:00:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-15 20:00:38,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-15 20:00:38,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:00:38,707 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-15 20:00:38,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 20:00:38,707 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-15 20:00:38,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 20:00:38,708 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:00:38,708 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 20:00:38,708 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:00:38,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:00:38,708 INFO L82 PathProgramCache]: Analyzing trace with hash 925774290, now seen corresponding path program 1 times [2019-11-15 20:00:38,709 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:00:38,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114255289] [2019-11-15 20:00:38,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:00:38,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:00:38,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:00:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:00:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:00:38,753 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:00:38,754 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 20:00:38,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:00:38 BoogieIcfgContainer [2019-11-15 20:00:38,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:00:38,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:00:38,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:00:38,773 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:00:38,773 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:00:38" (3/4) ... [2019-11-15 20:00:38,777 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 20:00:38,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:00:38,779 INFO L168 Benchmark]: Toolchain (without parser) took 963.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -158.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:00:38,779 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:00:38,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -204.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:00:38,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:00:38,781 INFO L168 Benchmark]: Boogie Preprocessor took 34.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:00:38,782 INFO L168 Benchmark]: RCFGBuilder took 254.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2019-11-15 20:00:38,783 INFO L168 Benchmark]: TraceAbstraction took 288.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:00:38,783 INFO L168 Benchmark]: Witness Printer took 4.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:00:38,786 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 338.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -204.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 254.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 288.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 24. Possible FailurePath: [L15] float x = __VERIFIER_nondet_float() ; [L16] float exp = 1.0 ; [L17] float term = 1.0 ; [L18] unsigned int count = 1 ; [L19] float result = 2*(1/(1-x)) ; [L20] int temp ; [L22] COND TRUE 1 [L24] term = term * (x/count) [L25] exp = exp + term [L26] count++ [L28] temp = __VERIFIER_nondet_int() [L29] COND TRUE temp ==0 [L9] COND TRUE !(cond) [L9] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 0.1.24-cad4683 [2019-11-15 20:00:40,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:00:41,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:00:41,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:00:41,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:00:41,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:00:41,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:00:41,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:00:41,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:00:41,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:00:41,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:00:41,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:00:41,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:00:41,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:00:41,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:00:41,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:00:41,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:00:41,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:00:41,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:00:41,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:00:41,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:00:41,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:00:41,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:00:41,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:00:41,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:00:41,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:00:41,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:00:41,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:00:41,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:00:41,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:00:41,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:00:41,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:00:41,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:00:41,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:00:41,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:00:41,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:00:41,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:00:41,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:00:41,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:00:41,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:00:41,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:00:41,044 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 20:00:41,058 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:00:41,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:00:41,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:00:41,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:00:41,059 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:00:41,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:00:41,060 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:00:41,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:00:41,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:00:41,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:00:41,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:00:41,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:00:41,061 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 20:00:41,061 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 20:00:41,061 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:00:41,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:00:41,062 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:00:41,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:00:41,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:00:41,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:00:41,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:00:41,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:00:41,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:00:41,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:00:41,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:00:41,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:00:41,063 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 20:00:41,064 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 20:00:41,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:00:41,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 20:00:41,064 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_beca23f8-c445-4e10-8832-f996085decc2/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(__VERIFIER_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 -> 264bfe6ed9d94f386b1000d33074dec83a5848c5 [2019-11-15 20:00:41,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:00:41,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:00:41,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:00:41,110 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:00:41,110 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:00:41,111 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2019-11-15 20:00:41,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/data/23c04f090/59e5cb305e784be0aa1e787d56618f72/FLAG6cac4bfea [2019-11-15 20:00:41,544 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:00:41,545 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2019-11-15 20:00:41,551 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/data/23c04f090/59e5cb305e784be0aa1e787d56618f72/FLAG6cac4bfea [2019-11-15 20:00:41,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/data/23c04f090/59e5cb305e784be0aa1e787d56618f72 [2019-11-15 20:00:41,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:00:41,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:00:41,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:00:41,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:00:41,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:00:41,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:00:41" (1/1) ... [2019-11-15 20:00:41,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f20dc41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:41, skipping insertion in model container [2019-11-15 20:00:41,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:00:41" (1/1) ... [2019-11-15 20:00:41,938 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:00:41,954 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:00:42,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:00:42,147 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:00:42,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:00:42,174 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:00:42,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:42 WrapperNode [2019-11-15 20:00:42,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:00:42,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:00:42,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:00:42,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:00:42,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:42" (1/1) ... [2019-11-15 20:00:42,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:42" (1/1) ... [2019-11-15 20:00:42,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:00:42,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:00:42,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:00:42,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:00:42,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:42" (1/1) ... [2019-11-15 20:00:42,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:42" (1/1) ... [2019-11-15 20:00:42,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:42" (1/1) ... [2019-11-15 20:00:42,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:42" (1/1) ... [2019-11-15 20:00:42,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:42" (1/1) ... [2019-11-15 20:00:42,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:42" (1/1) ... [2019-11-15 20:00:42,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:42" (1/1) ... [2019-11-15 20:00:42,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:00:42,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:00:42,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:00:42,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:00:42,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/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 [2019-11-15 20:00:42,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:00:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:00:46,633 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:00:46,633 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 20:00:46,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:00:46 BoogieIcfgContainer [2019-11-15 20:00:46,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:00:46,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:00:46,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:00:46,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:00:46,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:00:41" (1/3) ... [2019-11-15 20:00:46,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d16784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:00:46, skipping insertion in model container [2019-11-15 20:00:46,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:00:42" (2/3) ... [2019-11-15 20:00:46,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d16784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:00:46, skipping insertion in model container [2019-11-15 20:00:46,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:00:46" (3/3) ... [2019-11-15 20:00:46,663 INFO L109 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2019-11-15 20:00:46,673 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:00:46,682 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 20:00:46,707 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 20:00:46,758 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:00:46,758 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:00:46,758 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:00:46,758 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:00:46,760 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:00:46,760 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:00:46,760 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:00:46,760 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:00:46,774 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-15 20:00:46,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-15 20:00:46,781 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:00:46,782 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-15 20:00:46,783 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:00:46,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:00:46,788 INFO L82 PathProgramCache]: Analyzing trace with hash 30078084, now seen corresponding path program 1 times [2019-11-15 20:00:46,795 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:00:46,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189685510] [2019-11-15 20:00:46,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/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 [2019-11-15 20:00:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:00:47,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 20:00:47,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:00:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:00:47,126 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 20:00:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:00:47,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189685510] [2019-11-15 20:00:47,131 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:00:47,131 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 20:00:47,131 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355330699] [2019-11-15 20:00:47,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 20:00:47,136 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 20:00:47,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 20:00:47,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 20:00:47,152 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-15 20:00:47,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:00:47,168 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-11-15 20:00:47,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 20:00:47,169 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-15 20:00:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:00:47,176 INFO L225 Difference]: With dead ends: 19 [2019-11-15 20:00:47,176 INFO L226 Difference]: Without dead ends: 7 [2019-11-15 20:00:47,178 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 20:00:47,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-15 20:00:47,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-15 20:00:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 20:00:47,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-15 20:00:47,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-15 20:00:47,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:00:47,209 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-15 20:00:47,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 20:00:47,209 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-15 20:00:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 20:00:47,210 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:00:47,210 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 20:00:47,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 20:00:47,428 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:00:47,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:00:47,428 INFO L82 PathProgramCache]: Analyzing trace with hash 925774290, now seen corresponding path program 1 times [2019-11-15 20:00:47,429 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:00:47,429 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205939406] [2019-11-15 20:00:47,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/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 [2019-11-15 20:00:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:00:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:00:48,824 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 20:00:48,824 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 20:00:49,026 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 20:00:49,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:00:49 BoogieIcfgContainer [2019-11-15 20:00:49,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:00:49,045 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:00:49,045 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:00:49,045 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:00:49,046 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:00:46" (3/4) ... [2019-11-15 20:00:49,048 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 20:00:49,086 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_beca23f8-c445-4e10-8832-f996085decc2/bin/uautomizer/witness.graphml [2019-11-15 20:00:49,086 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:00:49,088 INFO L168 Benchmark]: Toolchain (without parser) took 7164.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 944.3 MB in the beginning and 1.0 GB in the end (delta: -89.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:00:49,089 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:00:49,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.67 ms. Allocated memory is still 1.0 GB. Free memory was 944.3 MB in the beginning and 933.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-15 20:00:49,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -162.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:00:49,091 INFO L168 Benchmark]: Boogie Preprocessor took 27.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-15 20:00:49,092 INFO L168 Benchmark]: RCFGBuilder took 4345.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:00:49,093 INFO L168 Benchmark]: TraceAbstraction took 2408.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. [2019-11-15 20:00:49,093 INFO L168 Benchmark]: Witness Printer took 41.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-15 20:00:49,097 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 251.67 ms. Allocated memory is still 1.0 GB. Free memory was 944.3 MB in the beginning and 933.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 85.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -162.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 4345.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2408.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. * Witness Printer took 41.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] float x = __VERIFIER_nondet_float() ; [L16] float exp = 1.0 ; [L17] float term = 1.0 ; [L18] unsigned int count = 1 ; [L19] float result = 2*(1/(1-x)) ; [L20] int temp ; [L22] COND TRUE 1 [L24] term = term * (x/count) [L25] exp = exp + term [L26] count++ [L28] temp = __VERIFIER_nondet_int() [L29] COND TRUE temp ==0 [L9] COND TRUE !(cond) [L9] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 12 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...