./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/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 1bbff5832e71471655f4416229b3fdd1dac2e479 .......................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/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 1bbff5832e71471655f4416229b3fdd1dac2e479 ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:11:59,874 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:11:59,875 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:11:59,890 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:11:59,891 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:11:59,891 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:11:59,892 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:11:59,894 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:11:59,895 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:11:59,897 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:11:59,898 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:11:59,898 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:11:59,899 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:11:59,900 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:11:59,901 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:11:59,902 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:11:59,903 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:11:59,904 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:11:59,906 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:11:59,907 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:11:59,909 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:11:59,910 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:11:59,912 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:11:59,912 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:11:59,913 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:11:59,914 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:11:59,914 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:11:59,915 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:11:59,916 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:11:59,918 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:11:59,918 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:11:59,918 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:11:59,919 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:11:59,919 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:11:59,920 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:11:59,921 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:11:59,921 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 20:11:59,933 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:11:59,934 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:11:59,934 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:11:59,935 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 20:11:59,935 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 20:11:59,935 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 20:11:59,936 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 20:11:59,936 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:11:59,936 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:11:59,936 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:11:59,937 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:11:59,937 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:11:59,938 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:11:59,938 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:11:59,938 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:11:59,938 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:11:59,938 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:11:59,938 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:11:59,939 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:11:59,939 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:11:59,939 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:11:59,939 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:11:59,939 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:11:59,941 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:11:59,941 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:11:59,941 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:11:59,941 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 20:11:59,941 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:11:59,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:11:59,942 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/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 -> 1bbff5832e71471655f4416229b3fdd1dac2e479 [2018-10-26 20:11:59,969 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:11:59,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:11:59,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:11:59,985 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:11:59,987 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:11:59,987 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i.p+cfa-reducer.c [2018-10-26 20:12:00,047 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/data/cba2ca9ee/c61c937c09da44eb99ee663f30b8264c/FLAG619008ec1 [2018-10-26 20:12:00,376 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:12:00,376 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i.p+cfa-reducer.c [2018-10-26 20:12:00,382 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/data/cba2ca9ee/c61c937c09da44eb99ee663f30b8264c/FLAG619008ec1 [2018-10-26 20:12:00,396 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/data/cba2ca9ee/c61c937c09da44eb99ee663f30b8264c [2018-10-26 20:12:00,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:12:00,402 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 20:12:00,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:12:00,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:12:00,407 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:12:00,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:12:00" (1/1) ... [2018-10-26 20:12:00,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4087c74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:00, skipping insertion in model container [2018-10-26 20:12:00,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:12:00" (1/1) ... [2018-10-26 20:12:00,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:12:00,437 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:12:00,581 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:12:00,586 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:12:00,600 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:12:00,613 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:12:00,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:00 WrapperNode [2018-10-26 20:12:00,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:12:00,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:12:00,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:12:00,615 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:12:00,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:00" (1/1) ... [2018-10-26 20:12:00,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:00" (1/1) ... [2018-10-26 20:12:00,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:00" (1/1) ... [2018-10-26 20:12:00,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:00" (1/1) ... [2018-10-26 20:12:00,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:00" (1/1) ... [2018-10-26 20:12:00,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:00" (1/1) ... [2018-10-26 20:12:00,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:00" (1/1) ... [2018-10-26 20:12:00,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:12:00,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:12:00,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:12:00,643 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:12:00,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/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 [2018-10-26 20:12:00,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:12:00,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:12:00,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:12:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 20:12:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 20:12:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:12:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:12:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:12:00,996 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:12:00,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:12:00 BoogieIcfgContainer [2018-10-26 20:12:00,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:12:00,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:12:00,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:12:01,001 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:12:01,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:12:00" (1/3) ... [2018-10-26 20:12:01,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efdd006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:12:01, skipping insertion in model container [2018-10-26 20:12:01,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:00" (2/3) ... [2018-10-26 20:12:01,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efdd006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:12:01, skipping insertion in model container [2018-10-26 20:12:01,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:12:00" (3/3) ... [2018-10-26 20:12:01,004 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_true-unreach-call.i.p+cfa-reducer.c [2018-10-26 20:12:01,014 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:12:01,021 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:12:01,036 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:12:01,067 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:12:01,067 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:12:01,068 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:12:01,068 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:12:01,068 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:12:01,068 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:12:01,068 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:12:01,068 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:12:01,068 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:12:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-10-26 20:12:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-26 20:12:01,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:12:01,092 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:12:01,094 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:12:01,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:12:01,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-10-26 20:12:01,101 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:12:01,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:12:01,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:12:01,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:12:01,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:12:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:12:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:12:01,207 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 20:12:01,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:12:01 BoogieIcfgContainer [2018-10-26 20:12:01,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:12:01,233 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:12:01,233 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:12:01,233 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:12:01,234 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:12:00" (3/4) ... [2018-10-26 20:12:01,239 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 20:12:01,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:12:01,244 INFO L168 Benchmark]: Toolchain (without parser) took 843.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 954.8 MB in the beginning and 1.1 GB in the end (delta: -173.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:12:01,246 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:12:01,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.23 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:12:01,248 INFO L168 Benchmark]: Boogie Preprocessor took 28.14 ms. Allocated memory is still 1.0 GB. Free memory is still 944.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:12:01,249 INFO L168 Benchmark]: RCFGBuilder took 354.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 944.1 MB in the beginning and 1.2 GB in the end (delta: -206.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2018-10-26 20:12:01,250 INFO L168 Benchmark]: TraceAbstraction took 234.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-10-26 20:12:01,251 INFO L168 Benchmark]: Witness Printer took 10.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:12:01,255 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 211.23 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.14 ms. Allocated memory is still 1.0 GB. Free memory is still 944.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 354.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 944.1 MB in the beginning and 1.2 GB in the end (delta: -206.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 234.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Witness Printer took 10.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 25]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L1] int __return_main; VAL [\old(__return_main)=2, __return_main=0] [L7] double main__x = 1.0; [L8] double main__x1 = main__x / 2.5; VAL [__return_main=0, main__x=1] [L10] COND FALSE !(main__x1 != main__x) [L19] int __tmp_1; [L20] __tmp_1 = main__x == 0 [L21] int __VERIFIER_assert__cond; [L22] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L23] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L25] __VERIFIER_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-1dbac8b [2018-10-26 20:12:03,243 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:12:03,244 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:12:03,253 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:12:03,254 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:12:03,255 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:12:03,256 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:12:03,257 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:12:03,258 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:12:03,259 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:12:03,259 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:12:03,260 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:12:03,260 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:12:03,261 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:12:03,262 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:12:03,263 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:12:03,263 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:12:03,265 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:12:03,266 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:12:03,268 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:12:03,269 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:12:03,269 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:12:03,271 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:12:03,272 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:12:03,272 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:12:03,273 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:12:03,273 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:12:03,274 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:12:03,275 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:12:03,275 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:12:03,276 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:12:03,276 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:12:03,276 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:12:03,277 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:12:03,277 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:12:03,278 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:12:03,278 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-10-26 20:12:03,294 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:12:03,294 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:12:03,295 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:12:03,295 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 20:12:03,295 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 20:12:03,296 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 20:12:03,296 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 20:12:03,296 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:12:03,296 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:12:03,296 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:12:03,296 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:12:03,296 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:12:03,297 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:12:03,297 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:12:03,297 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 20:12:03,297 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 20:12:03,297 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:12:03,297 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:12:03,297 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:12:03,298 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:12:03,298 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:12:03,298 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:12:03,298 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:12:03,298 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:12:03,298 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:12:03,298 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:12:03,299 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:12:03,299 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-26 20:12:03,299 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:12:03,299 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 20:12:03,299 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 20:12:03,299 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/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 -> 1bbff5832e71471655f4416229b3fdd1dac2e479 [2018-10-26 20:12:03,338 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:12:03,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:12:03,351 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:12:03,353 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:12:03,353 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:12:03,354 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i.p+cfa-reducer.c [2018-10-26 20:12:03,405 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/data/97aea84ce/91e43745e4a34bc3aa15b927433f2e9e/FLAGd7a0f2491 [2018-10-26 20:12:03,771 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:12:03,771 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i.p+cfa-reducer.c [2018-10-26 20:12:03,775 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/data/97aea84ce/91e43745e4a34bc3aa15b927433f2e9e/FLAGd7a0f2491 [2018-10-26 20:12:03,789 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/data/97aea84ce/91e43745e4a34bc3aa15b927433f2e9e [2018-10-26 20:12:03,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:12:03,793 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 20:12:03,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:12:03,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:12:03,798 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:12:03,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:12:03" (1/1) ... [2018-10-26 20:12:03,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72129b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:03, skipping insertion in model container [2018-10-26 20:12:03,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:12:03" (1/1) ... [2018-10-26 20:12:03,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:12:03,827 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:12:03,975 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:12:03,982 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:12:03,996 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:12:04,009 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:12:04,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:04 WrapperNode [2018-10-26 20:12:04,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:12:04,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:12:04,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:12:04,011 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:12:04,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:04" (1/1) ... [2018-10-26 20:12:04,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:04" (1/1) ... [2018-10-26 20:12:04,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:04" (1/1) ... [2018-10-26 20:12:04,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:04" (1/1) ... [2018-10-26 20:12:04,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:04" (1/1) ... [2018-10-26 20:12:04,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:04" (1/1) ... [2018-10-26 20:12:04,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:04" (1/1) ... [2018-10-26 20:12:04,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:12:04,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:12:04,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:12:04,048 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:12:04,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/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 [2018-10-26 20:12:04,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:12:04,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:12:04,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:12:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 20:12:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 20:12:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:12:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:12:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:12:05,133 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:12:05,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:12:05 BoogieIcfgContainer [2018-10-26 20:12:05,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:12:05,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:12:05,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:12:05,136 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:12:05,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:12:03" (1/3) ... [2018-10-26 20:12:05,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4248a33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:12:05, skipping insertion in model container [2018-10-26 20:12:05,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:12:04" (2/3) ... [2018-10-26 20:12:05,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4248a33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:12:05, skipping insertion in model container [2018-10-26 20:12:05,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:12:05" (3/3) ... [2018-10-26 20:12:05,145 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_true-unreach-call.i.p+cfa-reducer.c [2018-10-26 20:12:05,153 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:12:05,159 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:12:05,171 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:12:05,194 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:12:05,195 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:12:05,195 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:12:05,195 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:12:05,195 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:12:05,195 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:12:05,195 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:12:05,196 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:12:05,196 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:12:05,211 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-10-26 20:12:05,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-26 20:12:05,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:12:05,217 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:12:05,219 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:12:05,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:12:05,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-10-26 20:12:05,226 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:12:05,227 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/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 [2018-10-26 20:12:05,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:12:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:12:05,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:12:08,175 WARN L179 SmtUtils]: Spent 2.70 s on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 20:12:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:12:08,215 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:12:08,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:12:08,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:12:08,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:12:08,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:12:08,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:12:08,250 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-10-26 20:12:09,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:12:09,561 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-10-26 20:12:10,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:12:10,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-26 20:12:10,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:12:10,246 INFO L225 Difference]: With dead ends: 22 [2018-10-26 20:12:10,247 INFO L226 Difference]: Without dead ends: 11 [2018-10-26 20:12:10,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:12:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-26 20:12:10,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-26 20:12:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-26 20:12:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-26 20:12:10,282 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-26 20:12:10,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:12:10,283 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-26 20:12:10,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:12:10,283 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-26 20:12:10,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-26 20:12:10,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:12:10,284 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:12:10,284 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:12:10,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:12:10,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1683383028, now seen corresponding path program 1 times [2018-10-26 20:12:10,288 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:12:10,288 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/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 [2018-10-26 20:12:10,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:12:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:12:10,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:12:15,688 WARN L179 SmtUtils]: Spent 2.81 s on a formula simplification that was a NOOP. DAG size: 12 [2018-10-26 20:12:15,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:12:15,692 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:12:29,395 WARN L179 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 7 [2018-10-26 20:12:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:12:29,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 20:12:29,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-10-26 20:12:29,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 20:12:29,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 20:12:29,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=14, Unknown=4, NotChecked=0, Total=30 [2018-10-26 20:12:29,435 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-10-26 20:12:39,072 WARN L832 $PredicateComparison]: unable to prove that (and (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (not (fp.eq (fp.div RNE c_main_~main__x1~0 ((_ to_fp 11 53) RNE (/ 5.0 2.0))) c_main_~main__x1~0))) is different from false [2018-10-26 20:12:42,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:12:42,507 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-10-26 20:12:42,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 20:12:42,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-26 20:12:42,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:12:42,719 INFO L225 Difference]: With dead ends: 17 [2018-10-26 20:12:42,719 INFO L226 Difference]: Without dead ends: 14 [2018-10-26 20:12:42,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=5, NotChecked=10, Total=56 [2018-10-26 20:12:42,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-26 20:12:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-26 20:12:42,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-26 20:12:42,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-26 20:12:42,726 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2018-10-26 20:12:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:12:42,726 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-26 20:12:42,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 20:12:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-26 20:12:42,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 20:12:42,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:12:42,727 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:12:42,728 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:12:42,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:12:42,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1563595419, now seen corresponding path program 2 times [2018-10-26 20:12:42,728 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:12:42,729 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/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 [2018-10-26 20:12:42,748 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-10-26 20:12:43,545 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 20:12:43,546 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 20:12:43,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:12:52,601 WARN L179 SmtUtils]: Spent 2.73 s on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 20:12:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:12:52,619 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:12:58,523 WARN L832 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~main__x1~0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE c_main_~main__x1~0 ((_ to_fp 11 53) RNE (/ 5.0 2.0))) c_main_~main__x1~0))) is different from false [2018-10-26 20:13:00,732 WARN L854 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~main__x1~0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE c_main_~main__x1~0 ((_ to_fp 11 53) RNE (/ 5.0 2.0))) c_main_~main__x1~0))) is different from true [2018-10-26 20:13:03,178 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from false [2018-10-26 20:13:05,596 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from true [2018-10-26 20:13:08,195 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))) is different from false [2018-10-26 20:13:10,814 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))) is different from true [2018-10-26 20:13:13,588 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))) is different from false [2018-10-26 20:13:16,395 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))) is different from true [2018-10-26 20:13:16,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2018-10-26 20:13:16,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 20:13:16,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2018-10-26 20:13:16,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 20:13:16,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 20:13:16,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=55, Unknown=9, NotChecked=68, Total=156 [2018-10-26 20:13:16,431 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-26 20:13:19,270 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (_ bv0 32))) (.cse0 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (and (= (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) c_main_~main__x1~0) (or (fp.eq c_main_~main__x~0 .cse1) (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0))) (let ((.cse2 (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse0) .cse0) .cse0))) (or (not (fp.eq (fp.div RNE .cse2 .cse0) .cse2)) (fp.eq .cse2 .cse1))))) is different from true [2018-10-26 20:13:21,916 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (and (= c_main_~main__x1~0 (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse0) .cse0))) (or (not (fp.eq (fp.div RNE .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) RNE (_ bv0 32))))))) is different from true [2018-10-26 20:13:24,348 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (and (= (fp.div RNE (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) .cse0) .cse0) c_main_~main__x1~0) (let ((.cse1 (fp.div RNE c_main_~main__x1~0 .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse1 .cse0) .cse1)))))) is different from true [2018-10-26 20:13:33,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:13:33,097 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-10-26 20:13:33,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 20:13:33,098 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-26 20:13:33,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:13:33,099 INFO L225 Difference]: With dead ends: 20 [2018-10-26 20:13:33,099 INFO L226 Difference]: Without dead ends: 16 [2018-10-26 20:13:33,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=34, Invalid=72, Unknown=12, NotChecked=154, Total=272 [2018-10-26 20:13:33,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-26 20:13:33,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-26 20:13:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-26 20:13:33,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-26 20:13:33,105 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-10-26 20:13:33,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:13:33,105 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-26 20:13:33,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-26 20:13:33,105 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-26 20:13:33,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 20:13:33,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:13:33,106 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:13:33,106 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:13:33,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:13:33,107 INFO L82 PathProgramCache]: Analyzing trace with hash -625355333, now seen corresponding path program 3 times [2018-10-26 20:13:33,107 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:13:33,107 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/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 [2018-10-26 20:13:33,115 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-10-26 20:13:34,041 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-26 20:13:34,041 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 20:13:34,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:13:40,440 WARN L179 SmtUtils]: Spent 4.41 s on a formula simplification that was a NOOP. DAG size: 7 [2018-10-26 20:13:42,857 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((v_main_~main__x~0_12 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div RNE v_main_~main__x~0_12 ((_ to_fp 11 53) RNE (/ 5.0 2.0))))) (and (= c_main_~main__x~0 .cse0) (not (fp.eq .cse0 v_main_~main__x~0_12))))) (= c_main_~main__x1~0 (fp.div RNE c_main_~main__x~0 ((_ to_fp 11 53) RNE (/ 5.0 2.0))))) is different from false [2018-10-26 20:13:45,005 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((v_main_~main__x~0_12 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div RNE v_main_~main__x~0_12 ((_ to_fp 11 53) RNE (/ 5.0 2.0))))) (and (= c_main_~main__x~0 .cse0) (not (fp.eq .cse0 v_main_~main__x~0_12))))) (= c_main_~main__x1~0 (fp.div RNE c_main_~main__x~0 ((_ to_fp 11 53) RNE (/ 5.0 2.0))))) is different from true [2018-10-26 20:13:57,618 WARN L832 $PredicateComparison]: unable to prove that (or (and (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_prenex_2 .cse1))) (and (not (fp.eq .cse0 v_prenex_2)) (fp.eq (fp.div RNE .cse0 .cse1) .cse0) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))))))) (= (bvadd c_main_~__VERIFIER_assert__cond~0 (_ bv4294967295 32)) (_ bv0 32))) (and (exists ((v_main_~main__x~0_12 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse2 (fp.div RNE v_main_~main__x~0_12 .cse3))) (and (not (fp.eq .cse2 v_main_~main__x~0_12)) (fp.eq (fp.div RNE .cse2 .cse3) .cse2) (not (fp.eq .cse2 ((_ to_fp 11 53) RNE (_ bv0 32)))))))) (= c_main_~__VERIFIER_assert__cond~0 (_ bv0 32)))) is different from false [2018-10-26 20:14:04,922 WARN L832 $PredicateComparison]: unable to prove that (exists ((v_main_~main__x~0_12 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_main_~main__x~0_12 .cse1))) (and (not (fp.eq .cse0 v_main_~main__x~0_12)) (fp.eq (fp.div RNE .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))))) is different from false [2018-10-26 20:14:07,300 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_main_~main__x~0_12 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_main_~main__x~0_12 .cse1))) (and (not (fp.eq .cse0 v_main_~main__x~0_12)) (fp.eq (fp.div RNE .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))))) is different from true [2018-10-26 20:14:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 1 not checked. [2018-10-26 20:14:07,302 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:14:40,773 WARN L179 SmtUtils]: Spent 12.24 s on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 20:14:48,021 WARN L832 $PredicateComparison]: unable to prove that (forall ((v_main_~main__x~0_14 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_main_~main__x~0_14 .cse1))) (or (fp.eq .cse0 v_main_~main__x~0_14) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))))))) is different from false [2018-10-26 20:14:50,447 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_main_~main__x~0_14 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_main_~main__x~0_14 .cse1))) (or (fp.eq .cse0 v_main_~main__x~0_14) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))))))) is different from true [2018-10-26 20:15:24,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:15:24,598 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88629b43-0f74-40de-8782-6953f5300e3d/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 20:15:24,606 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-26 20:15:59,354 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-26 20:15:59,354 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Forcibly destroying the process [2018-10-26 20:16:00,841 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 20:16:00,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-26 20:16:00,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 20:16:00,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 20:16:00,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=15, Unknown=14, NotChecked=44, Total=90 [2018-10-26 20:16:00,843 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2018-10-26 20:16:03,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:16:03,469 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-26 20:16:03,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 20:16:03,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-10-26 20:16:03,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:16:03,910 INFO L225 Difference]: With dead ends: 16 [2018-10-26 20:16:03,910 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 20:16:03,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.8s TimeCoverageRelationStatistics Valid=17, Invalid=15, Unknown=14, NotChecked=44, Total=90 [2018-10-26 20:16:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 20:16:03,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 20:16:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 20:16:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 20:16:03,912 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-10-26 20:16:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:16:03,912 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 20:16:03,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 20:16:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 20:16:03,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 20:16:03,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 20:17:14,392 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:191) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:150) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplifyWithStatistics(SmtUtils.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeCFGHoareAnnotation(BasicCegarLoop.java:982) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 31 more [2018-10-26 20:17:14,396 INFO L168 Benchmark]: Toolchain (without parser) took 310602.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 954.6 MB in the beginning and 1.0 GB in the end (delta: -51.1 MB). Peak memory consumption was 94.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:17:14,397 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:17:14,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.08 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:17:14,398 INFO L168 Benchmark]: Boogie Preprocessor took 37.14 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:17:14,398 INFO L168 Benchmark]: RCFGBuilder took 1085.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 938.5 MB in the beginning and 1.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-10-26 20:17:14,399 INFO L168 Benchmark]: TraceAbstraction took 309259.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 115.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 11.5 GB. [2018-10-26 20:17:14,411 INFO L336 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 216.08 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.14 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1085.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 938.5 MB in the beginning and 1.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 309259.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 115.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...