./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/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 f58559d137fcf7688e3324763048c6e2c7ffac4b .......................................................................................................................................................................................................................... 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_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/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 f58559d137fcf7688e3324763048c6e2c7ffac4b ........................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 12:10:20,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:10:20,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:10:20,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:10:20,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:10:20,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:10:20,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:10:20,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:10:20,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:10:20,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:10:20,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:10:20,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:10:20,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:10:20,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:10:20,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:10:20,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:10:20,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:10:20,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:10:20,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:10:20,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:10:20,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:10:20,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:10:20,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:10:20,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:10:20,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:10:20,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:10:20,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:10:20,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:10:20,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:10:20,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:10:20,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:10:20,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:10:20,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:10:20,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:10:20,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:10:20,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:10:20,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:10:20,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:10:20,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:10:20,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:10:20,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:10:20,354 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 12:10:20,366 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:10:20,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:10:20,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:10:20,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:10:20,367 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:10:20,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:10:20,368 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:10:20,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:10:20,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:10:20,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:10:20,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:10:20,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:10:20,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:10:20,369 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:10:20,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:10:20,369 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:10:20,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:10:20,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:10:20,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:10:20,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:10:20,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:10:20,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:10:20,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:10:20,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:10:20,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:10:20,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:10:20,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:10:20,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:10:20,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:10:20,372 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_cde2f16c-6f83-4df2-bdac-9e325701e6a5/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 -> f58559d137fcf7688e3324763048c6e2c7ffac4b [2019-12-07 12:10:20,473 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:10:20,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:10:20,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:10:20,484 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:10:20,484 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:10:20,484 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2019-12-07 12:10:20,521 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/data/e65cf1e74/fea31fd9a0c6463590eba094f790a1c6/FLAGde0417907 [2019-12-07 12:10:20,950 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:10:20,951 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/sv-benchmarks/c/floats-cbmc-regression/float1.c [2019-12-07 12:10:20,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/data/e65cf1e74/fea31fd9a0c6463590eba094f790a1c6/FLAGde0417907 [2019-12-07 12:10:20,966 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/data/e65cf1e74/fea31fd9a0c6463590eba094f790a1c6 [2019-12-07 12:10:20,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:10:20,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:10:20,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:10:20,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:10:20,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:10:20,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:10:20" (1/1) ... [2019-12-07 12:10:20,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446e037f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:20, skipping insertion in model container [2019-12-07 12:10:20,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:10:20" (1/1) ... [2019-12-07 12:10:20,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:10:20,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:10:21,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:10:21,082 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:10:21,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:10:21,133 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:10:21,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:21 WrapperNode [2019-12-07 12:10:21,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:10:21,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:10:21,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:10:21,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:10:21,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:21" (1/1) ... [2019-12-07 12:10:21,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:21" (1/1) ... [2019-12-07 12:10:21,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:10:21,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:10:21,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:10:21,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:10:21,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:21" (1/1) ... [2019-12-07 12:10:21,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:21" (1/1) ... [2019-12-07 12:10:21,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:21" (1/1) ... [2019-12-07 12:10:21,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:21" (1/1) ... [2019-12-07 12:10:21,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:21" (1/1) ... [2019-12-07 12:10:21,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:21" (1/1) ... [2019-12-07 12:10:21,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:21" (1/1) ... [2019-12-07 12:10:21,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:10:21,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:10:21,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:10:21,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:10:21,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/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 [2019-12-07 12:10:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:10:21,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:10:21,282 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:10:21,282 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 12:10:21,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:10:21 BoogieIcfgContainer [2019-12-07 12:10:21,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:10:21,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:10:21,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:10:21,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:10:21,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:10:20" (1/3) ... [2019-12-07 12:10:21,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b5497f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:10:21, skipping insertion in model container [2019-12-07 12:10:21,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:21" (2/3) ... [2019-12-07 12:10:21,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b5497f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:10:21, skipping insertion in model container [2019-12-07 12:10:21,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:10:21" (3/3) ... [2019-12-07 12:10:21,287 INFO L109 eAbstractionObserver]: Analyzing ICFG float1.c [2019-12-07 12:10:21,294 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:10:21,298 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-07 12:10:21,305 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-07 12:10:21,319 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:10:21,319 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:10:21,319 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:10:21,319 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:10:21,319 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:10:21,320 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:10:21,320 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:10:21,320 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:10:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-12-07 12:10:21,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 12:10:21,332 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:10:21,332 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 12:10:21,333 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:10:21,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:10:21,336 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-12-07 12:10:21,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:10:21,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245792396] [2019-12-07 12:10:21,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:10:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:10:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:10:21,403 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:10:21,403 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 12:10:21,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:10:21 BoogieIcfgContainer [2019-12-07 12:10:21,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:10:21,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:10:21,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:10:21,414 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:10:21,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:10:21" (3/4) ... [2019-12-07 12:10:21,416 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 12:10:21,416 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:10:21,418 INFO L168 Benchmark]: Toolchain (without parser) took 448.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -114.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:10:21,418 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:10:21,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -142.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:10:21,419 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.88 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:10:21,420 INFO L168 Benchmark]: Boogie Preprocessor took 10.95 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:10:21,420 INFO L168 Benchmark]: RCFGBuilder took 112.68 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:10:21,421 INFO L168 Benchmark]: TraceAbstraction took 129.74 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:10:21,421 INFO L168 Benchmark]: Witness Printer took 2.94 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:10:21,423 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -142.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.88 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.95 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 112.68 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 129.74 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.94 ms. Allocated memory is still 1.1 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: 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 8, overapproximation of someBinaryArithmeticDOUBLEoperation at line 7, overapproximation of to_real at line 6. Possible FailurePath: [L3] double x; [L4] int y; [L6] x=2 [L7] x-=0.6 [L8] y=x [L10] COND TRUE !(y==1) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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, 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 0.1.25-f470102 [2019-12-07 12:10:22,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:10:22,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:10:22,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:10:22,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:10:22,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:10:22,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:10:22,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:10:22,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:10:22,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:10:22,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:10:22,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:10:22,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:10:22,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:10:22,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:10:22,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:10:22,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:10:22,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:10:22,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:10:22,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:10:22,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:10:22,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:10:22,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:10:22,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:10:22,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:10:22,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:10:22,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:10:22,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:10:22,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:10:22,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:10:22,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:10:22,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:10:22,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:10:22,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:10:22,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:10:22,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:10:22,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:10:22,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:10:22,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:10:22,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:10:22,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:10:22,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 12:10:22,779 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:10:22,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:10:22,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:10:22,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:10:22,780 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:10:22,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:10:22,780 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:10:22,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:10:22,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:10:22,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:10:22,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:10:22,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:10:22,781 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 12:10:22,781 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 12:10:22,781 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:10:22,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:10:22,781 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:10:22,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:10:22,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:10:22,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:10:22,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:10:22,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:10:22,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:10:22,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:10:22,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:10:22,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:10:22,783 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 12:10:22,783 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 12:10:22,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:10:22,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:10:22,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 12:10:22,783 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_cde2f16c-6f83-4df2-bdac-9e325701e6a5/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 -> f58559d137fcf7688e3324763048c6e2c7ffac4b [2019-12-07 12:10:22,951 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:10:22,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:10:22,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:10:22,962 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:10:22,963 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:10:22,963 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2019-12-07 12:10:23,001 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/data/3953df342/9cec538bf6aa40e69f4b2c98768328cd/FLAG593ae7a5d [2019-12-07 12:10:23,463 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:10:23,463 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/sv-benchmarks/c/floats-cbmc-regression/float1.c [2019-12-07 12:10:23,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/data/3953df342/9cec538bf6aa40e69f4b2c98768328cd/FLAG593ae7a5d [2019-12-07 12:10:23,477 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/data/3953df342/9cec538bf6aa40e69f4b2c98768328cd [2019-12-07 12:10:23,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:10:23,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:10:23,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:10:23,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:10:23,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:10:23,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:10:23" (1/1) ... [2019-12-07 12:10:23,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415fd40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:23, skipping insertion in model container [2019-12-07 12:10:23,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:10:23" (1/1) ... [2019-12-07 12:10:23,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:10:23,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:10:23,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:10:23,609 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:10:23,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:10:23,628 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:10:23,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:23 WrapperNode [2019-12-07 12:10:23,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:10:23,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:10:23,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:10:23,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:10:23,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:23" (1/1) ... [2019-12-07 12:10:23,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:23" (1/1) ... [2019-12-07 12:10:23,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:10:23,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:10:23,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:10:23,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:10:23,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:23" (1/1) ... [2019-12-07 12:10:23,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:23" (1/1) ... [2019-12-07 12:10:23,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:23" (1/1) ... [2019-12-07 12:10:23,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:23" (1/1) ... [2019-12-07 12:10:23,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:23" (1/1) ... [2019-12-07 12:10:23,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:23" (1/1) ... [2019-12-07 12:10:23,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:23" (1/1) ... [2019-12-07 12:10:23,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:10:23,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:10:23,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:10:23,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:10:23,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/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 [2019-12-07 12:10:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:10:23,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:10:24,078 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:10:24,078 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 12:10:24,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:10:24 BoogieIcfgContainer [2019-12-07 12:10:24,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:10:24,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:10:24,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:10:24,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:10:24,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:10:23" (1/3) ... [2019-12-07 12:10:24,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c959996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:10:24, skipping insertion in model container [2019-12-07 12:10:24,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:10:23" (2/3) ... [2019-12-07 12:10:24,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c959996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:10:24, skipping insertion in model container [2019-12-07 12:10:24,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:10:24" (3/3) ... [2019-12-07 12:10:24,084 INFO L109 eAbstractionObserver]: Analyzing ICFG float1.c [2019-12-07 12:10:24,090 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:10:24,095 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-07 12:10:24,105 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-07 12:10:24,121 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:10:24,121 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:10:24,122 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:10:24,122 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:10:24,122 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:10:24,122 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:10:24,122 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:10:24,122 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:10:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-12-07 12:10:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 12:10:24,135 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:10:24,135 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 12:10:24,135 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:10:24,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:10:24,139 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-12-07 12:10:24,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:10:24,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329349934] [2019-12-07 12:10:24,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/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 [2019-12-07 12:10:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:10:24,237 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:10:24,240 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:10:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:10:24,276 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:10:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:10:24,537 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329349934] [2019-12-07 12:10:24,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:10:24,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 12:10:24,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328710456] [2019-12-07 12:10:24,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:10:24,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 12:10:24,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:10:24,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:10:24,552 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2019-12-07 12:10:24,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:10:24,784 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-12-07 12:10:24,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:10:24,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-07 12:10:24,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:10:24,790 INFO L225 Difference]: With dead ends: 17 [2019-12-07 12:10:24,790 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 12:10:24,792 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:10:24,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 12:10:24,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 12:10:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 12:10:24,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 12:10:24,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-12-07 12:10:24,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:10:24,808 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:10:24,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:10:24,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 12:10:24,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 12:10:25,009 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 12:10:25,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 12:10:25,022 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 12:10:25,022 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 12:10:25,022 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 12:10:25,022 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 12:10:25,023 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2019-12-07 12:10:25,023 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2019-12-07 12:10:25,023 INFO L246 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2019-12-07 12:10:25,023 INFO L246 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-12-07 12:10:25,024 INFO L246 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2019-12-07 12:10:25,024 INFO L246 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2019-12-07 12:10:25,024 INFO L246 CegarLoopResult]: For program point L10-3(line 10) no Hoare annotation was computed. [2019-12-07 12:10:25,024 INFO L246 CegarLoopResult]: For program point L2(lines 2 18) no Hoare annotation was computed. [2019-12-07 12:10:25,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:10:25 BoogieIcfgContainer [2019-12-07 12:10:25,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:10:25,028 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:10:25,028 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:10:25,028 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:10:25,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:10:24" (3/4) ... [2019-12-07 12:10:25,031 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 12:10:25,038 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 12:10:25,038 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 12:10:25,038 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 12:10:25,062 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cde2f16c-6f83-4df2-bdac-9e325701e6a5/bin/uautomizer/witness.graphml [2019-12-07 12:10:25,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:10:25,064 INFO L168 Benchmark]: Toolchain (without parser) took 1583.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -120.8 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:10:25,064 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:10:25,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.52 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:10:25,065 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:10:25,065 INFO L168 Benchmark]: Boogie Preprocessor took 14.83 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 12:10:25,066 INFO L168 Benchmark]: RCFGBuilder took 383.02 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: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:10:25,066 INFO L168 Benchmark]: TraceAbstraction took 947.77 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: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2019-12-07 12:10:25,066 INFO L168 Benchmark]: Witness Printer took 34.69 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 12:10:25,068 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 148.52 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 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 51.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.83 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 383.02 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: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 947.77 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: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * Witness Printer took 34.69 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: 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: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 4 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 90 SizeOfPredicates, 3 NumberOfNonLiveVariables, 7 ConjunctsInSsa, 4 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 correct! Received shutdown request...