./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/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 6f57b560c2271100a3cc213cf38aa06905e4b86e .............................................................................................................................................................................................................................................................................................................................................................. 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_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/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 6f57b560c2271100a3cc213cf38aa06905e4b86e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 18:28:44,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:28:44,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:28:44,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:28:44,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:28:44,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:28:44,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:28:44,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:28:44,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:28:44,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:28:44,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:28:44,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:28:44,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:28:44,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:28:44,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:28:44,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:28:44,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:28:44,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:28:44,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:28:44,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:28:44,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:28:44,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:28:44,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:28:44,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:28:44,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:28:44,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:28:44,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:28:44,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:28:44,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:28:44,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:28:44,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:28:44,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:28:44,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:28:44,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:28:44,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:28:44,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:28:44,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:28:44,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:28:44,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:28:44,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:28:44,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:28:44,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:28:44,609 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:28:44,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:28:44,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:28:44,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:28:44,611 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:28:44,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:28:44,611 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:28:44,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:28:44,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:28:44,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:28:44,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:28:44,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:28:44,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:28:44,612 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:28:44,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:28:44,612 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:28:44,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:28:44,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:28:44,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:28:44,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:28:44,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:28:44,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:28:44,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:28:44,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:28:44,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:28:44,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:28:44,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:28:44,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:28:44,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:28:44,614 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_6db60989-6bc9-4856-85da-cb88197ea839/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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-12-07 18:28:44,733 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:28:44,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:28:44,743 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:28:44,744 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:28:44,744 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:28:44,745 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-12-07 18:28:44,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/data/26535475b/56c23513c78641dc89d27dd76453ad09/FLAGc86cddfe1 [2019-12-07 18:28:45,235 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:28:45,236 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-12-07 18:28:45,240 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/data/26535475b/56c23513c78641dc89d27dd76453ad09/FLAGc86cddfe1 [2019-12-07 18:28:45,248 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/data/26535475b/56c23513c78641dc89d27dd76453ad09 [2019-12-07 18:28:45,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:28:45,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:28:45,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:28:45,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:28:45,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:28:45,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:28:45" (1/1) ... [2019-12-07 18:28:45,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e14f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:45, skipping insertion in model container [2019-12-07 18:28:45,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:28:45" (1/1) ... [2019-12-07 18:28:45,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:28:45,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:28:45,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:28:45,416 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:28:45,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:28:45,450 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:28:45,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:45 WrapperNode [2019-12-07 18:28:45,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:28:45,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:28:45,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:28:45,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:28:45,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:45" (1/1) ... [2019-12-07 18:28:45,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:45" (1/1) ... [2019-12-07 18:28:45,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:28:45,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:28:45,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:28:45,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:28:45,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:45" (1/1) ... [2019-12-07 18:28:45,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:45" (1/1) ... [2019-12-07 18:28:45,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:45" (1/1) ... [2019-12-07 18:28:45,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:45" (1/1) ... [2019-12-07 18:28:45,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:45" (1/1) ... [2019-12-07 18:28:45,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:45" (1/1) ... [2019-12-07 18:28:45,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:45" (1/1) ... [2019-12-07 18:28:45,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:28:45,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:28:45,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:28:45,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:28:45,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:28:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:28:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 18:28:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:28:45,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:28:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 18:28:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:28:45,739 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:28:45,740 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 18:28:45,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:28:45 BoogieIcfgContainer [2019-12-07 18:28:45,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:28:45,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:28:45,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:28:45,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:28:45,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:28:45" (1/3) ... [2019-12-07 18:28:45,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8f5d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:28:45, skipping insertion in model container [2019-12-07 18:28:45,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:45" (2/3) ... [2019-12-07 18:28:45,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8f5d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:28:45, skipping insertion in model container [2019-12-07 18:28:45,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:28:45" (3/3) ... [2019-12-07 18:28:45,746 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2019-12-07 18:28:45,752 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:28:45,757 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:28:45,764 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:28:45,779 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:28:45,779 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:28:45,779 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:28:45,779 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:28:45,779 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:28:45,779 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:28:45,779 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:28:45,779 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:28:45,789 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 18:28:45,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:28:45,793 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:28:45,793 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:28:45,794 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:28:45,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:28:45,797 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-12-07 18:28:45,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:28:45,803 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398256350] [2019-12-07 18:28:45,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:28:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:28:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:45,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398256350] [2019-12-07 18:28:45,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:28:45,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:28:45,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985290615] [2019-12-07 18:28:45,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 18:28:45,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:28:45,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 18:28:45,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 18:28:45,890 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-12-07 18:28:45,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:28:45,902 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-12-07 18:28:45,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:28:45,903 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 18:28:45,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:28:45,910 INFO L225 Difference]: With dead ends: 62 [2019-12-07 18:28:45,910 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 18:28:45,912 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 [2019-12-07 18:28:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 18:28:45,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 18:28:45,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 18:28:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-12-07 18:28:45,934 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-12-07 18:28:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:28:45,935 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-12-07 18:28:45,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 18:28:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-12-07 18:28:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:28:45,935 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:28:45,935 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:28:45,936 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:28:45,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:28:45,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-12-07 18:28:45,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:28:45,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264830979] [2019-12-07 18:28:45,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:28:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:28:45,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:45,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264830979] [2019-12-07 18:28:45,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:28:45,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:28:45,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173216042] [2019-12-07 18:28:45,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:28:45,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:28:45,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:28:45,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:28:45,985 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-12-07 18:28:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:28:46,026 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-12-07 18:28:46,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:28:46,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 18:28:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:28:46,028 INFO L225 Difference]: With dead ends: 53 [2019-12-07 18:28:46,028 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 18:28:46,029 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 [2019-12-07 18:28:46,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 18:28:46,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-12-07 18:28:46,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 18:28:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 18:28:46,035 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-12-07 18:28:46,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:28:46,035 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 18:28:46,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:28:46,035 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 18:28:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 18:28:46,036 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:28:46,036 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:28:46,036 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:28:46,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:28:46,036 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-12-07 18:28:46,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:28:46,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088167460] [2019-12-07 18:28:46,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:28:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:28:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:46,079 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088167460] [2019-12-07 18:28:46,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:28:46,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:28:46,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821488767] [2019-12-07 18:28:46,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:28:46,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:28:46,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:28:46,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:28:46,080 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-12-07 18:28:46,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:28:46,110 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-12-07 18:28:46,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:28:46,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 18:28:46,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:28:46,111 INFO L225 Difference]: With dead ends: 55 [2019-12-07 18:28:46,111 INFO L226 Difference]: Without dead ends: 46 [2019-12-07 18:28:46,112 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 [2019-12-07 18:28:46,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-07 18:28:46,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-12-07 18:28:46,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 18:28:46,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 18:28:46,115 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-12-07 18:28:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:28:46,116 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 18:28:46,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:28:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 18:28:46,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 18:28:46,116 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:28:46,116 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:28:46,116 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:28:46,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:28:46,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-12-07 18:28:46,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:28:46,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655474339] [2019-12-07 18:28:46,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:28:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:28:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:28:46,160 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:28:46,160 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:28:46,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:28:46 BoogieIcfgContainer [2019-12-07 18:28:46,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:28:46,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:28:46,179 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:28:46,179 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:28:46,179 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:28:45" (3/4) ... [2019-12-07 18:28:46,181 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:28:46,181 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:28:46,183 INFO L168 Benchmark]: Toolchain (without parser) took 931.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.8 MB). Free memory was 935.2 MB in the beginning and 1.0 GB in the end (delta: -77.8 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:28:46,183 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:28:46,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.8 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -153.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:28:46,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:28:46,184 INFO L168 Benchmark]: Boogie Preprocessor took 19.91 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:28:46,185 INFO L168 Benchmark]: RCFGBuilder took 241.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:28:46,185 INFO L168 Benchmark]: TraceAbstraction took 436.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:28:46,185 INFO L168 Benchmark]: Witness Printer took 2.78 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:28:46,188 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 198.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.8 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -153.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.91 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 241.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 436.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.78 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s 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 0.1.25-f470102 [2019-12-07 18:28:47,583 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-12-07 18:28:47,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:28:47,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:28:47,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:28:47,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:28:47,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:28:47,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:28:47,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:28:47,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:28:47,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:28:47,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:28:47,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:28:47,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:28:47,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:28:47,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:28:47,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:28:47,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:28:47,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:28:47,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:28:47,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:28:47,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:28:47,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:28:47,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:28:47,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:28:47,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:28:47,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:28:47,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:28:47,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:28:47,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:28:47,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:28:47,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:28:47,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:28:47,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:28:47,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:28:47,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:28:47,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:28:47,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:28:47,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:28:47,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 18:28:47,636 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:28:47,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:28:47,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:28:47,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:28:47,637 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:28:47,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:28:47,638 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:28:47,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:28:47,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:28:47,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:28:47,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:28:47,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:28:47,639 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 18:28:47,639 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 18:28:47,639 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:28:47,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:28:47,639 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:28:47,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:28:47,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:28:47,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:28:47,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:28:47,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:28:47,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:28:47,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:28:47,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:28:47,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:28:47,641 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 18:28:47,641 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 18:28:47,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:28:47,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:28:47,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 18:28:47,641 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_6db60989-6bc9-4856-85da-cb88197ea839/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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-12-07 18:28:47,807 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:28:47,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:28:47,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:28:47,818 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:28:47,818 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:28:47,818 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-12-07 18:28:47,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/data/fa117e103/10070f663bd64b93a096915bc96edb82/FLAGd3172290c [2019-12-07 18:28:48,176 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:28:48,176 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-12-07 18:28:48,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/data/fa117e103/10070f663bd64b93a096915bc96edb82/FLAGd3172290c [2019-12-07 18:28:48,189 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/data/fa117e103/10070f663bd64b93a096915bc96edb82 [2019-12-07 18:28:48,192 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:28:48,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:28:48,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:28:48,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:28:48,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:28:48,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:28:48" (1/1) ... [2019-12-07 18:28:48,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41944eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:48, skipping insertion in model container [2019-12-07 18:28:48,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:28:48" (1/1) ... [2019-12-07 18:28:48,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:28:48,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:28:48,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:28:48,329 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:28:48,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:28:48,399 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:28:48,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:48 WrapperNode [2019-12-07 18:28:48,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:28:48,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:28:48,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:28:48,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:28:48,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:48" (1/1) ... [2019-12-07 18:28:48,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:48" (1/1) ... [2019-12-07 18:28:48,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:28:48,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:28:48,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:28:48,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:28:48,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:48" (1/1) ... [2019-12-07 18:28:48,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:48" (1/1) ... [2019-12-07 18:28:48,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:48" (1/1) ... [2019-12-07 18:28:48,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:48" (1/1) ... [2019-12-07 18:28:48,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:48" (1/1) ... [2019-12-07 18:28:48,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:48" (1/1) ... [2019-12-07 18:28:48,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:48" (1/1) ... [2019-12-07 18:28:48,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:28:48,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:28:48,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:28:48,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:28:48,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:28:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 18:28:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:28:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 18:28:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:28:48,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:28:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:28:48,753 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:28:48,753 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 18:28:48,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:28:48 BoogieIcfgContainer [2019-12-07 18:28:48,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:28:48,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:28:48,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:28:48,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:28:48,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:28:48" (1/3) ... [2019-12-07 18:28:48,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3199f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:28:48, skipping insertion in model container [2019-12-07 18:28:48,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:28:48" (2/3) ... [2019-12-07 18:28:48,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3199f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:28:48, skipping insertion in model container [2019-12-07 18:28:48,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:28:48" (3/3) ... [2019-12-07 18:28:48,759 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2019-12-07 18:28:48,765 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:28:48,770 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:28:48,777 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:28:48,791 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:28:48,791 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:28:48,791 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:28:48,791 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:28:48,791 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:28:48,791 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:28:48,791 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:28:48,792 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:28:48,800 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 18:28:48,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:28:48,804 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:28:48,805 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:28:48,805 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:28:48,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:28:48,808 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-12-07 18:28:48,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:28:48,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327014093] [2019-12-07 18:28:48,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 18:28:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:28:48,869 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 18:28:48,874 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:28:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:48,883 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:28:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:48,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327014093] [2019-12-07 18:28:48,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:28:48,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 18:28:48,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515346814] [2019-12-07 18:28:48,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 18:28:48,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:28:48,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 18:28:48,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 18:28:48,905 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-12-07 18:28:48,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:28:48,918 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-12-07 18:28:48,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:28:48,919 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 18:28:48,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:28:48,926 INFO L225 Difference]: With dead ends: 62 [2019-12-07 18:28:48,926 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 18:28:48,928 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 [2019-12-07 18:28:48,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 18:28:48,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 18:28:48,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 18:28:48,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-12-07 18:28:48,952 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-12-07 18:28:48,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:28:48,952 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-12-07 18:28:48,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 18:28:48,952 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-12-07 18:28:48,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:28:48,953 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:28:48,953 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:28:49,154 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 18:28:49,155 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:28:49,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:28:49,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-12-07 18:28:49,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:28:49,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633668687] [2019-12-07 18:28:49,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/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 [2019-12-07 18:28:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:28:49,289 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 18:28:49,290 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:28:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:49,306 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:28:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:49,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633668687] [2019-12-07 18:28:49,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:28:49,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 18:28:49,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918135275] [2019-12-07 18:28:49,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:28:49,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:28:49,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:28:49,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:28:49,320 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-12-07 18:28:49,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:28:49,385 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-12-07 18:28:49,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:28:49,386 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 18:28:49,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:28:49,387 INFO L225 Difference]: With dead ends: 68 [2019-12-07 18:28:49,388 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 18:28:49,389 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 [2019-12-07 18:28:49,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 18:28:49,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-12-07 18:28:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 18:28:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 18:28:49,395 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-12-07 18:28:49,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:28:49,396 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 18:28:49,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:28:49,396 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 18:28:49,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 18:28:49,397 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:28:49,397 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:28:49,598 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 18:28:49,598 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:28:49,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:28:49,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-12-07 18:28:49,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:28:49,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330896362] [2019-12-07 18:28:49,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/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 [2019-12-07 18:28:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:28:49,696 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 18:28:49,698 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:28:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:49,729 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:28:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:49,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330896362] [2019-12-07 18:28:49,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:28:49,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 18:28:49,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742948022] [2019-12-07 18:28:49,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:28:49,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:28:49,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:28:49,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:28:49,757 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-12-07 18:28:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:28:49,824 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-12-07 18:28:49,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:28:49,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-12-07 18:28:49,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:28:49,826 INFO L225 Difference]: With dead ends: 52 [2019-12-07 18:28:49,826 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 18:28:49,826 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:28:49,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 18:28:49,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-07 18:28:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 18:28:49,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-12-07 18:28:49,831 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2019-12-07 18:28:49,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:28:49,831 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-12-07 18:28:49,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:28:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-12-07 18:28:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 18:28:49,832 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:28:49,832 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:28:50,033 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 18:28:50,034 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:28:50,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:28:50,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-12-07 18:28:50,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:28:50,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022540634] [2019-12-07 18:28:50,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/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 [2019-12-07 18:28:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:28:50,155 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 18:28:50,156 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:28:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:50,165 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:28:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:50,175 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022540634] [2019-12-07 18:28:50,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:28:50,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 18:28:50,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021224747] [2019-12-07 18:28:50,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:28:50,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:28:50,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:28:50,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:28:50,176 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2019-12-07 18:28:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:28:50,233 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2019-12-07 18:28:50,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:28:50,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 18:28:50,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:28:50,234 INFO L225 Difference]: With dead ends: 65 [2019-12-07 18:28:50,234 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 18:28:50,235 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 [2019-12-07 18:28:50,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 18:28:50,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2019-12-07 18:28:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 18:28:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-12-07 18:28:50,239 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-12-07 18:28:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:28:50,239 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-12-07 18:28:50,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:28:50,239 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-12-07 18:28:50,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 18:28:50,240 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:28:50,240 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:28:50,440 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 18:28:50,441 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:28:50,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:28:50,441 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-12-07 18:28:50,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:28:50,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610090469] [2019-12-07 18:28:50,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/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 [2019-12-07 18:28:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:28:50,527 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:28:50,528 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:28:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:50,541 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:28:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:50,564 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610090469] [2019-12-07 18:28:50,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:28:50,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 18:28:50,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560436025] [2019-12-07 18:28:50,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:28:50,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:28:50,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:28:50,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:28:50,566 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2019-12-07 18:28:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:28:50,575 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-12-07 18:28:50,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:28:50,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-12-07 18:28:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:28:50,576 INFO L225 Difference]: With dead ends: 40 [2019-12-07 18:28:50,576 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 18:28:50,576 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 [2019-12-07 18:28:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 18:28:50,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 18:28:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 18:28:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-12-07 18:28:50,579 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2019-12-07 18:28:50,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:28:50,580 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-12-07 18:28:50,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:28:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-12-07 18:28:50,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 18:28:50,580 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:28:50,580 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:28:50,781 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 18:28:50,782 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:28:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:28:50,783 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-12-07 18:28:50,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:28:50,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318629637] [2019-12-07 18:28:50,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/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 [2019-12-07 18:28:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:28:50,865 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 18:28:50,866 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:28:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:50,894 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:28:50,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 18:28:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:50,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318629637] [2019-12-07 18:28:50,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:28:50,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-12-07 18:28:50,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659650979] [2019-12-07 18:28:50,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 18:28:50,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:28:50,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 18:28:50,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-12-07 18:28:50,934 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2019-12-07 18:28:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:28:51,008 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-12-07 18:28:51,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 18:28:51,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-12-07 18:28:51,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:28:51,009 INFO L225 Difference]: With dead ends: 42 [2019-12-07 18:28:51,009 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 18:28:51,010 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-12-07 18:28:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 18:28:51,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2019-12-07 18:28:51,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 18:28:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-12-07 18:28:51,015 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2019-12-07 18:28:51,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:28:51,015 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-12-07 18:28:51,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 18:28:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-12-07 18:28:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 18:28:51,016 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:28:51,016 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:28:51,216 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 18:28:51,217 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:28:51,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:28:51,218 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-12-07 18:28:51,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:28:51,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295101795] [2019-12-07 18:28:51,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/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 [2019-12-07 18:28:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:28:51,377 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 18:28:51,379 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:28:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:51,405 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:28:51,419 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 18:28:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:28:51,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295101795] [2019-12-07 18:28:51,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:28:51,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-12-07 18:28:51,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205085703] [2019-12-07 18:28:51,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 18:28:51,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:28:51,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 18:28:51,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:28:51,496 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2019-12-07 18:28:51,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:28:51,575 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-12-07 18:28:51,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:28:51,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-12-07 18:28:51,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:28:51,577 INFO L225 Difference]: With dead ends: 45 [2019-12-07 18:28:51,577 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 18:28:51,577 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:28:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 18:28:51,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-12-07 18:28:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 18:28:51,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-12-07 18:28:51,580 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-12-07 18:28:51,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:28:51,581 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-12-07 18:28:51,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 18:28:51,581 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-12-07 18:28:51,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 18:28:51,581 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:28:51,581 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] [2019-12-07 18:28:51,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 18:28:51,783 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:28:51,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:28:51,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-12-07 18:28:51,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:28:51,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638279129] [2019-12-07 18:28:51,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/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 [2019-12-07 18:28:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:28:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:28:52,062 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 18:28:52,062 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:28:52,262 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 18:28:52,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:28:52 BoogieIcfgContainer [2019-12-07 18:28:52,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:28:52,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:28:52,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:28:52,318 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:28:52,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:28:48" (3/4) ... [2019-12-07 18:28:52,320 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 18:28:52,355 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6db60989-6bc9-4856-85da-cb88197ea839/bin/uautomizer/witness.graphml [2019-12-07 18:28:52,355 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:28:52,356 INFO L168 Benchmark]: Toolchain (without parser) took 4163.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 952.4 MB in the beginning and 846.7 MB in the end (delta: 105.7 MB). Peak memory consumption was 222.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:28:52,356 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:28:52,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -152.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:28:52,357 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:28:52,357 INFO L168 Benchmark]: Boogie Preprocessor took 22.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:28:52,357 INFO L168 Benchmark]: RCFGBuilder took 303.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:28:52,358 INFO L168 Benchmark]: TraceAbstraction took 3563.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 853.8 MB in the end (delta: 217.8 MB). Peak memory consumption was 217.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:28:52,358 INFO L168 Benchmark]: Witness Printer took 36.47 ms. Allocated memory is still 1.1 GB. Free memory was 853.8 MB in the beginning and 846.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:28:52,359 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 206.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -152.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 303.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3563.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 853.8 MB in the end (delta: 217.8 MB). Peak memory consumption was 217.8 MB. Max. memory is 11.5 GB. * Witness Printer took 36.47 ms. Allocated memory is still 1.1 GB. Free memory was 853.8 MB in the beginning and 846.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 85]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L52] COND FALSE !(__fpclassify_double(x) == 0) [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L54] COND FALSE !(__fpclassify_double(y) == 0) [L57] EXPR x > y ? x : y [L57] return x > y ? x : y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L61] __uint32_t msw; [L64] ieee_double_shape_type gh_u; [L65] gh_u.value = (x) [L66] EXPR gh_u.parts.msw [L66] (msw) = gh_u.parts.msw [L69] return (msw & 0x80000000) != 0; [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 290 SDslu, 362 SDs, 0 SdLazy, 112 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s 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, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 12524 SizeOfPredicates, 27 NumberOfNonLiveVariables, 358 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...