./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/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 36a0a55241cede481b157c1ab9f348d708a5b166 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/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 36a0a55241cede481b157c1ab9f348d708a5b166 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-25 08:49:38,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:49:38,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:49:38,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:49:38,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:49:38,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:49:38,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:49:38,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:49:38,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:49:38,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:49:38,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:49:38,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:49:38,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:49:38,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:49:38,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:49:38,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:49:38,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:49:38,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:49:38,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:49:38,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:49:38,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:49:38,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:49:38,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:49:38,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:49:38,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:49:38,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:49:38,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:49:38,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:49:38,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:49:38,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:49:38,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:49:38,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:49:38,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:49:38,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:49:38,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:49:38,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:49:38,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:49:38,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:49:38,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:49:38,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:49:38,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:49:38,666 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:49:38,690 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:49:38,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:49:38,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:49:38,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:49:38,702 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:49:38,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:49:38,702 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:49:38,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:49:38,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:49:38,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:49:38,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:49:38,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:49:38,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:49:38,704 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:49:38,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:49:38,704 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:49:38,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:49:38,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:49:38,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:49:38,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:49:38,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:49:38,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:49:38,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:49:38,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:49:38,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:49:38,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:49:38,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:49:38,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:49:38,708 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_acee7539-23e2-48fd-9bc5-25d460c1b988/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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2019-11-25 08:49:38,883 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:49:38,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:49:38,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:49:38,897 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:49:38,898 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:49:38,898 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-11-25 08:49:38,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/data/20f55df78/8e29d39e44504a40a31a1365d2f442e6/FLAG45a19229f [2019-11-25 08:49:39,376 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:49:39,378 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-11-25 08:49:39,385 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/data/20f55df78/8e29d39e44504a40a31a1365d2f442e6/FLAG45a19229f [2019-11-25 08:49:39,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/data/20f55df78/8e29d39e44504a40a31a1365d2f442e6 [2019-11-25 08:49:39,400 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:49:39,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:49:39,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:39,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:49:39,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:49:39,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@615048f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39, skipping insertion in model container [2019-11-25 08:49:39,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:49:39,442 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:49:39,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:39,731 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:49:39,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:39,801 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:49:39,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39 WrapperNode [2019-11-25 08:49:39,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:39,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:39,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:49:39,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:49:39,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:39,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:49:39,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:49:39,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:49:39,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... [2019-11-25 08:49:39,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:49:39,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:49:39,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:49:39,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:49:39,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/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 [2019-11-25 08:49:39,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:49:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-25 08:49:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:49:39,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:49:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:49:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:49:40,282 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:49:40,282 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-25 08:49:40,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:40 BoogieIcfgContainer [2019-11-25 08:49:40,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:49:40,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:49:40,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:49:40,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:49:40,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:49:39" (1/3) ... [2019-11-25 08:49:40,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef0ed93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:40, skipping insertion in model container [2019-11-25 08:49:40,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:39" (2/3) ... [2019-11-25 08:49:40,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef0ed93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:40, skipping insertion in model container [2019-11-25 08:49:40,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:40" (3/3) ... [2019-11-25 08:49:40,304 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2019-11-25 08:49:40,313 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:49:40,318 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:49:40,327 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:49:40,353 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:49:40,354 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:49:40,354 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:49:40,354 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:49:40,354 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:49:40,354 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:49:40,354 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:49:40,354 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:49:40,366 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-25 08:49:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:49:40,371 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:40,372 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:40,372 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:40,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:40,376 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-25 08:49:40,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:40,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821061745] [2019-11-25 08:49:40,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:40,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821061745] [2019-11-25 08:49:40,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:40,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:49:40,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944795283] [2019-11-25 08:49:40,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:49:40,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:40,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:49:40,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:49:40,507 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-25 08:49:40,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:40,523 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-25 08:49:40,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:49:40,524 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:49:40,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:40,534 INFO L225 Difference]: With dead ends: 62 [2019-11-25 08:49:40,534 INFO L226 Difference]: Without dead ends: 29 [2019-11-25 08:49:40,537 INFO L630 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 [2019-11-25 08:49:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-25 08:49:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-25 08:49:40,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-25 08:49:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-25 08:49:40,572 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-25 08:49:40,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:40,573 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-25 08:49:40,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:49:40,573 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-25 08:49:40,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:49:40,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:40,575 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:40,575 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:40,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-25 08:49:40,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:40,576 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862265777] [2019-11-25 08:49:40,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:40,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862265777] [2019-11-25 08:49:40,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:40,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:49:40,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223968831] [2019-11-25 08:49:40,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:49:40,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:40,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:49:40,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:49:40,657 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-25 08:49:40,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:40,721 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-25 08:49:40,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:49:40,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-25 08:49:40,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:40,723 INFO L225 Difference]: With dead ends: 53 [2019-11-25 08:49:40,723 INFO L226 Difference]: Without dead ends: 44 [2019-11-25 08:49:40,724 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:49:40,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-25 08:49:40,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-25 08:49:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:49:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-25 08:49:40,734 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-25 08:49:40,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:40,734 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-25 08:49:40,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:49:40,734 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-25 08:49:40,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:49:40,735 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:40,735 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:40,735 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:40,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:40,736 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-25 08:49:40,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:40,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914812667] [2019-11-25 08:49:40,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:40,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914812667] [2019-11-25 08:49:40,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:40,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:49:40,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750021445] [2019-11-25 08:49:40,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:49:40,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:40,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:49:40,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:49:40,830 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-25 08:49:40,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:40,877 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-25 08:49:40,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:49:40,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-25 08:49:40,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:40,878 INFO L225 Difference]: With dead ends: 55 [2019-11-25 08:49:40,879 INFO L226 Difference]: Without dead ends: 46 [2019-11-25 08:49:40,879 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:49:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-25 08:49:40,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-25 08:49:40,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:49:40,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-25 08:49:40,884 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-25 08:49:40,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:40,885 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-25 08:49:40,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:49:40,885 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-25 08:49:40,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:49:40,886 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:40,886 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:40,886 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:40,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:40,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-25 08:49:40,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:40,887 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015229320] [2019-11-25 08:49:40,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:40,956 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:49:40,957 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:49:40,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:49:40 BoogieIcfgContainer [2019-11-25 08:49:40,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:49:40,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:49:40,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:49:40,980 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:49:40,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:40" (3/4) ... [2019-11-25 08:49:40,984 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:49:40,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:49:40,986 INFO L168 Benchmark]: Toolchain (without parser) took 1583.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -116.3 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:40,986 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:40,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:40,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.27 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. [2019-11-25 08:49:40,987 INFO L168 Benchmark]: Boogie Preprocessor took 29.91 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. [2019-11-25 08:49:40,988 INFO L168 Benchmark]: RCFGBuilder took 398.49 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: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:40,988 INFO L168 Benchmark]: TraceAbstraction took 695.19 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: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:40,989 INFO L168 Benchmark]: Witness Printer took 4.19 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. [2019-11-25 08:49:40,991 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 396.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.27 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 29.91 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 398.49 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: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 695.19 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: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.19 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: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 0.1.24-6b5699a [2019-11-25 08:49:42,816 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-25 08:49:42,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:49:42,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:49:42,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:49:42,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:49:42,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:49:42,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:49:42,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:49:42,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:49:42,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:49:42,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:49:42,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:49:42,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:49:42,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:49:42,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:49:42,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:49:42,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:49:42,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:49:42,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:49:42,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:49:42,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:49:42,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:49:42,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:49:42,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:49:42,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:49:42,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:49:42,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:49:42,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:49:42,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:49:42,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:49:42,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:49:42,921 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:49:42,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:49:42,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:49:42,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:49:42,933 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:49:42,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:49:42,933 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:49:42,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:49:42,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:49:42,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:49:42,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:49:42,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:49:42,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:49:42,935 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:49:42,935 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:49:42,935 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:49:42,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:49:42,936 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:49:42,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:49:42,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:49:42,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:49:42,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:49:42,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:49:42,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:49:42,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:49:42,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:49:42,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:49:42,939 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:49:42,939 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:49:42,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:49:42,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:49:42,940 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_acee7539-23e2-48fd-9bc5-25d460c1b988/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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2019-11-25 08:49:43,247 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:49:43,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:49:43,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:49:43,269 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:49:43,269 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:49:43,270 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-11-25 08:49:43,329 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/data/026a7419a/e0a5155de71d40759eaf4040ca10320b/FLAGb20ed1b78 [2019-11-25 08:49:43,719 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:49:43,719 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-11-25 08:49:43,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/data/026a7419a/e0a5155de71d40759eaf4040ca10320b/FLAGb20ed1b78 [2019-11-25 08:49:44,154 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/data/026a7419a/e0a5155de71d40759eaf4040ca10320b [2019-11-25 08:49:44,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:49:44,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:49:44,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:44,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:49:44,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:49:44,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:44" (1/1) ... [2019-11-25 08:49:44,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61677559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:44, skipping insertion in model container [2019-11-25 08:49:44,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:44" (1/1) ... [2019-11-25 08:49:44,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:49:44,189 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:49:44,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:44,381 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:49:44,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:44,432 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:49:44,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:44 WrapperNode [2019-11-25 08:49:44,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:44,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:44,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:49:44,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:49:44,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:44" (1/1) ... [2019-11-25 08:49:44,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:44" (1/1) ... [2019-11-25 08:49:44,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:44,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:49:44,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:49:44,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:49:44,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:44" (1/1) ... [2019-11-25 08:49:44,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:44" (1/1) ... [2019-11-25 08:49:44,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:44" (1/1) ... [2019-11-25 08:49:44,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:44" (1/1) ... [2019-11-25 08:49:44,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:44" (1/1) ... [2019-11-25 08:49:44,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:44" (1/1) ... [2019-11-25 08:49:44,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:44" (1/1) ... [2019-11-25 08:49:44,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:49:44,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:49:44,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:49:44,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:49:44,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/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 [2019-11-25 08:49:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:49:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:49:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:49:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:49:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-25 08:49:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:49:44,979 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:49:44,979 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-25 08:49:44,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:44 BoogieIcfgContainer [2019-11-25 08:49:44,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:49:44,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:49:44,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:49:44,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:49:44,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:49:44" (1/3) ... [2019-11-25 08:49:44,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7b70d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:44, skipping insertion in model container [2019-11-25 08:49:44,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:44" (2/3) ... [2019-11-25 08:49:44,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7b70d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:44, skipping insertion in model container [2019-11-25 08:49:44,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:44" (3/3) ... [2019-11-25 08:49:44,987 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2019-11-25 08:49:45,001 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:49:45,008 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:49:45,019 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:49:45,043 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:49:45,044 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:49:45,044 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:49:45,044 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:49:45,044 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:49:45,044 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:49:45,045 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:49:45,045 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:49:45,058 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-25 08:49:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:49:45,065 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:45,066 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:45,066 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:45,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:45,071 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-25 08:49:45,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:45,080 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137591768] [2019-11-25 08:49:45,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/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 [2019-11-25 08:49:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:45,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-25 08:49:45,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:45,195 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:45,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137591768] [2019-11-25 08:49:45,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:45,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:49:45,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306426256] [2019-11-25 08:49:45,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:49:45,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:45,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:49:45,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:49:45,215 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-25 08:49:45,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:45,229 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-25 08:49:45,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:49:45,230 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:49:45,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:45,240 INFO L225 Difference]: With dead ends: 62 [2019-11-25 08:49:45,240 INFO L226 Difference]: Without dead ends: 29 [2019-11-25 08:49:45,243 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:49:45,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-25 08:49:45,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-25 08:49:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-25 08:49:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-25 08:49:45,274 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-25 08:49:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:45,275 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-25 08:49:45,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:49:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-25 08:49:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:49:45,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:45,276 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:45,476 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 08:49:45,476 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:45,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:45,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-25 08:49:45,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:45,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459956885] [2019-11-25 08:49:45,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/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 [2019-11-25 08:49:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:45,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:49:45,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:45,581 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:45,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459956885] [2019-11-25 08:49:45,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:45,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:49:45,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812568358] [2019-11-25 08:49:45,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:49:45,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:45,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:49:45,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:49:45,621 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-25 08:49:45,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:45,752 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-25 08:49:45,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:49:45,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-25 08:49:45,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:45,754 INFO L225 Difference]: With dead ends: 68 [2019-11-25 08:49:45,754 INFO L226 Difference]: Without dead ends: 59 [2019-11-25 08:49:45,755 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:49:45,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-25 08:49:45,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-25 08:49:45,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:49:45,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-25 08:49:45,763 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-25 08:49:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:45,763 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-25 08:49:45,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:49:45,764 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-25 08:49:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:49:45,765 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:45,765 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:45,987 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-25 08:49:45,987 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:45,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-25 08:49:45,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:45,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089944688] [2019-11-25 08:49:45,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-25 08:49:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:46,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:49:46,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:46,076 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:46,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089944688] [2019-11-25 08:49:46,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:46,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-25 08:49:46,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746159845] [2019-11-25 08:49:46,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:49:46,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:46,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:49:46,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:49:46,108 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-25 08:49:46,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:46,191 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-25 08:49:46,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:49:46,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-25 08:49:46,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:46,192 INFO L225 Difference]: With dead ends: 52 [2019-11-25 08:49:46,193 INFO L226 Difference]: Without dead ends: 26 [2019-11-25 08:49:46,193 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:49:46,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-25 08:49:46,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-25 08:49:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-25 08:49:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-25 08:49:46,198 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-11-25 08:49:46,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:46,198 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-25 08:49:46,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:49:46,199 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-25 08:49:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:49:46,199 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:46,200 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:46,400 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-25 08:49:46,400 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:46,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:46,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-25 08:49:46,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:46,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370854766] [2019-11-25 08:49:46,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-25 08:49:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:46,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:49:46,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:46,481 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:46,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370854766] [2019-11-25 08:49:46,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:46,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:49:46,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202736309] [2019-11-25 08:49:46,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:49:46,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:46,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:49:46,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:49:46,505 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-11-25 08:49:46,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:46,579 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-25 08:49:46,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:49:46,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-25 08:49:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:46,581 INFO L225 Difference]: With dead ends: 61 [2019-11-25 08:49:46,581 INFO L226 Difference]: Without dead ends: 52 [2019-11-25 08:49:46,581 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:49:46,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-25 08:49:46,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-11-25 08:49:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:49:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-25 08:49:46,593 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-11-25 08:49:46,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:46,593 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-25 08:49:46,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:49:46,593 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-25 08:49:46,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:49:46,595 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:46,596 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:46,805 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-25 08:49:46,806 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:46,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:46,806 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-25 08:49:46,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:46,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112326447] [2019-11-25 08:49:46,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-25 08:49:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:46,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:49:46,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:46,912 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:46,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112326447] [2019-11-25 08:49:46,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:46,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-25 08:49:46,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694427093] [2019-11-25 08:49:46,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:49:46,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:46,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:49:46,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:49:46,934 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-11-25 08:49:46,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:46,946 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-25 08:49:46,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:49:46,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-25 08:49:46,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:46,947 INFO L225 Difference]: With dead ends: 38 [2019-11-25 08:49:46,947 INFO L226 Difference]: Without dead ends: 28 [2019-11-25 08:49:46,948 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:49:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-25 08:49:46,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-25 08:49:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:49:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-25 08:49:46,952 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-25 08:49:46,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:46,952 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-25 08:49:46,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:49:46,953 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-25 08:49:46,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:49:46,953 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:46,954 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:47,172 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-25 08:49:47,172 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:47,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:47,172 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-25 08:49:47,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:47,173 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614662823] [2019-11-25 08:49:47,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-25 08:49:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:47,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:49:47,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:47,290 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:47,292 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:47,350 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614662823] [2019-11-25 08:49:47,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:47,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-25 08:49:47,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281147751] [2019-11-25 08:49:47,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:49:47,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:47,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:49:47,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:49:47,352 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-11-25 08:49:47,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:47,477 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-25 08:49:47,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:49:47,478 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-25 08:49:47,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:47,479 INFO L225 Difference]: With dead ends: 40 [2019-11-25 08:49:47,479 INFO L226 Difference]: Without dead ends: 37 [2019-11-25 08:49:47,480 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:49:47,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-25 08:49:47,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-25 08:49:47,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-25 08:49:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-25 08:49:47,484 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-11-25 08:49:47,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:47,484 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-25 08:49:47,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:49:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-25 08:49:47,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:49:47,485 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:47,486 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:47,701 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-25 08:49:47,702 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:47,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:47,702 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-25 08:49:47,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:47,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911607956] [2019-11-25 08:49:47,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-25 08:49:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:47,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:49:47,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:47,817 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:49:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:47,841 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911607956] [2019-11-25 08:49:47,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:47,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-25 08:49:47,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131200144] [2019-11-25 08:49:47,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:49:47,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:49:47,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:49:47,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:49:47,843 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-11-25 08:49:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:47,895 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-25 08:49:47,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:49:47,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-25 08:49:47,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:47,897 INFO L225 Difference]: With dead ends: 43 [2019-11-25 08:49:47,897 INFO L226 Difference]: Without dead ends: 23 [2019-11-25 08:49:47,897 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:49:47,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-25 08:49:47,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-25 08:49:47,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-25 08:49:47,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-25 08:49:47,901 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-11-25 08:49:47,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:47,901 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-25 08:49:47,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:49:47,901 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-25 08:49:47,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:49:47,902 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:47,902 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:48,103 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-25 08:49:48,103 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:48,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:48,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-25 08:49:48,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:48,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412656527] [2019-11-25 08:49:48,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-25 08:49:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:48,334 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:49:48,345 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:49:48,546 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-25 08:49:48,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:49:48 BoogieIcfgContainer [2019-11-25 08:49:48,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:49:48,582 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:49:48,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:49:48,583 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:49:48,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:44" (3/4) ... [2019-11-25 08:49:48,585 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:49:48,640 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_acee7539-23e2-48fd-9bc5-25d460c1b988/bin/uautomizer/witness.graphml [2019-11-25 08:49:48,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:49:48,642 INFO L168 Benchmark]: Toolchain (without parser) took 4483.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 960.4 MB in the beginning and 914.5 MB in the end (delta: 45.9 MB). Peak memory consumption was 196.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:48,642 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:48,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.08 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:48,643 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -196.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:48,643 INFO L168 Benchmark]: Boogie Preprocessor took 32.41 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. [2019-11-25 08:49:48,644 INFO L168 Benchmark]: RCFGBuilder took 408.82 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:48,644 INFO L168 Benchmark]: TraceAbstraction took 3601.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 921.0 MB in the end (delta: 192.9 MB). Peak memory consumption was 192.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:48,645 INFO L168 Benchmark]: Witness Printer took 57.57 ms. Allocated memory is still 1.2 GB. Free memory was 921.0 MB in the beginning and 914.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:48,648 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 274.08 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 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 105.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -196.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.41 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. * RCFGBuilder took 408.82 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3601.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 921.0 MB in the end (delta: 192.9 MB). Peak memory consumption was 192.9 MB. Max. memory is 11.5 GB. * Witness Printer took 57.57 ms. Allocated memory is still 1.2 GB. Free memory was 921.0 MB in the beginning and 914.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 70]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; [L36] COND FALSE !(__fpclassify_float(x) == 0) [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; [L38] COND FALSE !(__fpclassify_float(y) == 0) [L41] EXPR x < y ? x : y [L41] return x < y ? x : y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L45] __uint32_t w; [L48] ieee_float_shape_type gf_u; [L49] gf_u.value = (x) [L50] EXPR gf_u.word [L50] (w) = gf_u.word [L53] return (w & 0x80000000) != 0; [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 191 SDslu, 324 SDs, 0 SdLazy, 100 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 7 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 7783 SizeOfPredicates, 27 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...