./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/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 fa5701cbf2aecb18d72b6e5744b88307065d31ab ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/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 fa5701cbf2aecb18d72b6e5744b88307065d31ab .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:56:01,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:01,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:01,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:01,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:01,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:01,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:01,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:01,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:01,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:01,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:01,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:01,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:01,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:01,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:01,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:01,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:01,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:01,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:01,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:01,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:01,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:01,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:01,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:01,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:01,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:01,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:01,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:01,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:01,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:01,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:01,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:01,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:01,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:01,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:01,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:01,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:01,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:01,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:01,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:01,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:01,206 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:56:01,227 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:01,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:01,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:01,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:01,228 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:01,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:01,229 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:56:01,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:56:01,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:56:01,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:01,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:56:01,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:56:01,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:56:01,230 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:56:01,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:01,230 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:01,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:56:01,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:01,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:01,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:56:01,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:56:01,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:56:01,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:01,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:56:01,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:56:01,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:56:01,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:56:01,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:56:01,232 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_117ad747-1649-4bb8-9c01-e1bf564b43ce/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 -> fa5701cbf2aecb18d72b6e5744b88307065d31ab [2019-11-25 08:56:01,390 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:01,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:01,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:01,410 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:01,410 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:01,411 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-25 08:56:01,473 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/data/ca15f3e6a/d4427a55527b4d36b58bb1ee1d04208a/FLAG2ef8c7344 [2019-11-25 08:56:01,857 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:01,858 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-25 08:56:01,865 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/data/ca15f3e6a/d4427a55527b4d36b58bb1ee1d04208a/FLAG2ef8c7344 [2019-11-25 08:56:02,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/data/ca15f3e6a/d4427a55527b4d36b58bb1ee1d04208a [2019-11-25 08:56:02,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:02,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:02,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:02,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:02,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:02,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:02" (1/1) ... [2019-11-25 08:56:02,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d2b6dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:02, skipping insertion in model container [2019-11-25 08:56:02,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:02" (1/1) ... [2019-11-25 08:56:02,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:02,262 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:02,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:02,518 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:02,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:02,567 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:02,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:02 WrapperNode [2019-11-25 08:56:02,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:02,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:02,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:02,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:02,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:02" (1/1) ... [2019-11-25 08:56:02,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:02" (1/1) ... [2019-11-25 08:56:02,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:02,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:02,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:02,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:02,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:02" (1/1) ... [2019-11-25 08:56:02,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:02" (1/1) ... [2019-11-25 08:56:02,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:02" (1/1) ... [2019-11-25 08:56:02,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:02" (1/1) ... [2019-11-25 08:56:02,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:02" (1/1) ... [2019-11-25 08:56:02,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:02" (1/1) ... [2019-11-25 08:56:02,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:02" (1/1) ... [2019-11-25 08:56:02,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:02,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:02,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:02,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:02,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:56:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:02,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:03,185 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:03,185 INFO L284 CfgBuilder]: Removed 34 assume(true) statements. [2019-11-25 08:56:03,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:03 BoogieIcfgContainer [2019-11-25 08:56:03,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:03,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:56:03,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:56:03,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:56:03,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:56:02" (1/3) ... [2019-11-25 08:56:03,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5824fbcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:03, skipping insertion in model container [2019-11-25 08:56:03,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:02" (2/3) ... [2019-11-25 08:56:03,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5824fbcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:03, skipping insertion in model container [2019-11-25 08:56:03,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:03" (3/3) ... [2019-11-25 08:56:03,193 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-11-25 08:56:03,202 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:56:03,208 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-25 08:56:03,218 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-25 08:56:03,248 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:56:03,249 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:56:03,249 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:56:03,249 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:03,250 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:03,250 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:56:03,250 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:03,251 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:56:03,273 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-11-25 08:56:03,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:56:03,279 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:03,279 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:03,280 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:03,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:03,286 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-11-25 08:56:03,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:03,295 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903835894] [2019-11-25 08:56:03,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:03,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903835894] [2019-11-25 08:56:03,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:03,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-25 08:56:03,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274431962] [2019-11-25 08:56:03,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:56:03,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:03,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:56:03,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:56:03,614 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 8 states. [2019-11-25 08:56:04,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:04,208 INFO L93 Difference]: Finished difference Result 269 states and 396 transitions. [2019-11-25 08:56:04,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-25 08:56:04,210 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-25 08:56:04,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:04,221 INFO L225 Difference]: With dead ends: 269 [2019-11-25 08:56:04,222 INFO L226 Difference]: Without dead ends: 170 [2019-11-25 08:56:04,225 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2019-11-25 08:56:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-11-25 08:56:04,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 110. [2019-11-25 08:56:04,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-25 08:56:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 147 transitions. [2019-11-25 08:56:04,272 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 147 transitions. Word has length 14 [2019-11-25 08:56:04,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:04,272 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 147 transitions. [2019-11-25 08:56:04,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:56:04,273 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 147 transitions. [2019-11-25 08:56:04,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:56:04,274 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:04,274 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:04,274 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:04,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:04,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1417488386, now seen corresponding path program 1 times [2019-11-25 08:56:04,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:04,275 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186087761] [2019-11-25 08:56:04,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:04,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186087761] [2019-11-25 08:56:04,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:04,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-25 08:56:04,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982907774] [2019-11-25 08:56:04,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:56:04,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:04,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:56:04,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:56:04,472 INFO L87 Difference]: Start difference. First operand 110 states and 147 transitions. Second operand 8 states. [2019-11-25 08:56:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:04,810 INFO L93 Difference]: Finished difference Result 183 states and 226 transitions. [2019-11-25 08:56:04,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-25 08:56:04,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-25 08:56:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:04,816 INFO L225 Difference]: With dead ends: 183 [2019-11-25 08:56:04,818 INFO L226 Difference]: Without dead ends: 154 [2019-11-25 08:56:04,820 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:56:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-25 08:56:04,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 99. [2019-11-25 08:56:04,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-25 08:56:04,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2019-11-25 08:56:04,845 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 18 [2019-11-25 08:56:04,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:04,845 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2019-11-25 08:56:04,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:56:04,846 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2019-11-25 08:56:04,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:56:04,848 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:04,848 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:04,848 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:04,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:04,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-11-25 08:56:04,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:04,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643913147] [2019-11-25 08:56:04,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:05,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643913147] [2019-11-25 08:56:05,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:05,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-11-25 08:56:05,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550396911] [2019-11-25 08:56:05,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-25 08:56:05,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:05,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-25 08:56:05,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:56:05,243 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand 15 states. [2019-11-25 08:56:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:06,634 INFO L93 Difference]: Finished difference Result 225 states and 274 transitions. [2019-11-25 08:56:06,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-25 08:56:06,635 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2019-11-25 08:56:06,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:06,637 INFO L225 Difference]: With dead ends: 225 [2019-11-25 08:56:06,637 INFO L226 Difference]: Without dead ends: 221 [2019-11-25 08:56:06,638 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2019-11-25 08:56:06,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2019-11-25 08:56:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 107. [2019-11-25 08:56:06,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-25 08:56:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 137 transitions. [2019-11-25 08:56:06,670 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 137 transitions. Word has length 22 [2019-11-25 08:56:06,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:06,670 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 137 transitions. [2019-11-25 08:56:06,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-25 08:56:06,671 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 137 transitions. [2019-11-25 08:56:06,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:56:06,673 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:06,673 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:06,674 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:06,674 INFO L82 PathProgramCache]: Analyzing trace with hash 743535808, now seen corresponding path program 1 times [2019-11-25 08:56:06,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:06,675 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791720807] [2019-11-25 08:56:06,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:06,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791720807] [2019-11-25 08:56:06,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:06,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-25 08:56:06,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850284673] [2019-11-25 08:56:06,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:56:06,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:06,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:56:06,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:56:06,849 INFO L87 Difference]: Start difference. First operand 107 states and 137 transitions. Second operand 8 states. [2019-11-25 08:56:07,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:07,067 INFO L93 Difference]: Finished difference Result 171 states and 213 transitions. [2019-11-25 08:56:07,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:56:07,068 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-11-25 08:56:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:07,070 INFO L225 Difference]: With dead ends: 171 [2019-11-25 08:56:07,070 INFO L226 Difference]: Without dead ends: 146 [2019-11-25 08:56:07,071 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:56:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-25 08:56:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 110. [2019-11-25 08:56:07,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-25 08:56:07,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-11-25 08:56:07,081 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-11-25 08:56:07,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:07,081 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-11-25 08:56:07,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:56:07,082 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-11-25 08:56:07,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:56:07,083 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:07,083 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:07,083 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:07,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:07,084 INFO L82 PathProgramCache]: Analyzing trace with hash 743595390, now seen corresponding path program 1 times [2019-11-25 08:56:07,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:07,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483742433] [2019-11-25 08:56:07,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:07,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483742433] [2019-11-25 08:56:07,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:07,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-25 08:56:07,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805206522] [2019-11-25 08:56:07,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:56:07,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:07,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:56:07,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:56:07,272 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 8 states. [2019-11-25 08:56:07,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:07,474 INFO L93 Difference]: Finished difference Result 157 states and 195 transitions. [2019-11-25 08:56:07,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:56:07,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-11-25 08:56:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:07,476 INFO L225 Difference]: With dead ends: 157 [2019-11-25 08:56:07,476 INFO L226 Difference]: Without dead ends: 132 [2019-11-25 08:56:07,476 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:56:07,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-11-25 08:56:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 110. [2019-11-25 08:56:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-25 08:56:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-11-25 08:56:07,486 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-11-25 08:56:07,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:07,487 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-11-25 08:56:07,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:56:07,487 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-11-25 08:56:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:56:07,488 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:07,488 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:07,489 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:07,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:07,489 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-11-25 08:56:07,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:07,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883318286] [2019-11-25 08:56:07,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:07,608 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:07,608 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:56:07,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:56:07 BoogieIcfgContainer [2019-11-25 08:56:07,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:56:07,647 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:56:07,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:56:07,648 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:56:07,648 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:03" (3/4) ... [2019-11-25 08:56:07,652 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:56:07,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:56:07,655 INFO L168 Benchmark]: Toolchain (without parser) took 5435.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 950.1 MB in the beginning and 884.7 MB in the end (delta: 65.4 MB). Peak memory consumption was 195.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:07,656 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:07,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:07,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.73 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:07,663 INFO L168 Benchmark]: Boogie Preprocessor took 64.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:07,664 INFO L168 Benchmark]: RCFGBuilder took 484.44 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:07,664 INFO L168 Benchmark]: TraceAbstraction took 4459.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 884.7 MB in the end (delta: 199.6 MB). Peak memory consumption was 199.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:07,665 INFO L168 Benchmark]: Witness Printer took 4.81 ms. Allocated memory is still 1.2 GB. Free memory is still 884.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:07,672 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 348.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 68.73 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 484.44 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4459.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 884.7 MB in the end (delta: 199.6 MB). Peak memory consumption was 199.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.81 ms. Allocated memory is still 1.2 GB. Free memory is still 884.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L232] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] b = base2flt(mb, eb) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 7 error locations. Result: UNSAFE, OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 443 SDtfs, 1134 SDslu, 3048 SDs, 0 SdLazy, 822 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 287 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 8117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:56:09,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:09,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:09,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:09,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:09,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:09,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:09,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:09,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:09,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:09,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:09,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:09,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:09,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:09,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:09,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:09,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:09,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:09,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:09,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:09,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:09,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:09,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:09,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:09,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:09,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:09,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:09,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:09,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:09,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:09,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:09,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:09,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:09,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:09,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:09,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:09,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:09,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:09,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:09,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:09,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:09,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:56:09,473 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:09,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:09,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:09,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:09,474 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:09,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:09,475 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:56:09,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:56:09,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:09,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:56:09,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:56:09,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:56:09,476 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:56:09,477 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:56:09,477 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:56:09,477 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:56:09,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:09,478 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:09,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:56:09,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:09,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:09,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:56:09,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:56:09,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:56:09,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:09,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:56:09,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:56:09,480 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:56:09,480 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:56:09,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:56:09,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:56:09,481 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_117ad747-1649-4bb8-9c01-e1bf564b43ce/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 -> fa5701cbf2aecb18d72b6e5744b88307065d31ab [2019-11-25 08:56:09,836 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:09,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:09,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:09,852 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:09,853 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:09,853 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-25 08:56:09,901 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/data/6115c0abf/d8c6752a0d614b1690f91573418784b0/FLAGd7a008e05 [2019-11-25 08:56:10,277 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:10,277 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-25 08:56:10,283 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/data/6115c0abf/d8c6752a0d614b1690f91573418784b0/FLAGd7a008e05 [2019-11-25 08:56:10,676 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/data/6115c0abf/d8c6752a0d614b1690f91573418784b0 [2019-11-25 08:56:10,681 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:10,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:10,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:10,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:10,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:10,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:10" (1/1) ... [2019-11-25 08:56:10,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d0a36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10, skipping insertion in model container [2019-11-25 08:56:10,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:10" (1/1) ... [2019-11-25 08:56:10,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:10,725 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:11,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:11,008 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:11,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:11,127 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:11,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:11 WrapperNode [2019-11-25 08:56:11,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:11,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:11,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:11,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:11,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:11" (1/1) ... [2019-11-25 08:56:11,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:11" (1/1) ... [2019-11-25 08:56:11,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:11,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:11,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:11,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:11,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:11" (1/1) ... [2019-11-25 08:56:11,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:11" (1/1) ... [2019-11-25 08:56:11,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:11" (1/1) ... [2019-11-25 08:56:11,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:11" (1/1) ... [2019-11-25 08:56:11,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:11" (1/1) ... [2019-11-25 08:56:11,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:11" (1/1) ... [2019-11-25 08:56:11,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:11" (1/1) ... [2019-11-25 08:56:11,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:11,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:11,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:11,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:11,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:56:11,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:11,779 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:11,779 INFO L284 CfgBuilder]: Removed 34 assume(true) statements. [2019-11-25 08:56:11,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:11 BoogieIcfgContainer [2019-11-25 08:56:11,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:11,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:56:11,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:56:11,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:56:11,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:56:10" (1/3) ... [2019-11-25 08:56:11,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d7e10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:11, skipping insertion in model container [2019-11-25 08:56:11,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:11" (2/3) ... [2019-11-25 08:56:11,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d7e10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:11, skipping insertion in model container [2019-11-25 08:56:11,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:11" (3/3) ... [2019-11-25 08:56:11,787 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-11-25 08:56:11,796 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:56:11,802 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-25 08:56:11,812 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-25 08:56:11,838 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:56:11,839 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:56:11,839 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:56:11,839 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:11,839 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:11,840 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:56:11,840 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:11,840 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:56:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-11-25 08:56:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:56:11,870 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:11,871 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:11,872 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:11,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:11,878 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-11-25 08:56:11,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:11,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1914608786] [2019-11-25 08:56:11,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:11,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:56:12,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:12,069 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:12,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1914608786] [2019-11-25 08:56:12,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:12,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-25 08:56:12,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195688560] [2019-11-25 08:56:12,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:56:12,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:12,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:56:12,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:56:12,111 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 7 states. [2019-11-25 08:56:12,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:12,553 INFO L93 Difference]: Finished difference Result 284 states and 409 transitions. [2019-11-25 08:56:12,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-25 08:56:12,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-25 08:56:12,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:12,566 INFO L225 Difference]: With dead ends: 284 [2019-11-25 08:56:12,567 INFO L226 Difference]: Without dead ends: 184 [2019-11-25 08:56:12,570 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:56:12,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-11-25 08:56:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 107. [2019-11-25 08:56:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-25 08:56:12,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 143 transitions. [2019-11-25 08:56:12,624 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 143 transitions. Word has length 14 [2019-11-25 08:56:12,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:12,625 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 143 transitions. [2019-11-25 08:56:12,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:56:12,625 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 143 transitions. [2019-11-25 08:56:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:56:12,626 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:12,627 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:12,828 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:12,828 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:12,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:12,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-11-25 08:56:12,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:12,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1415277711] [2019-11-25 08:56:12,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:12,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:56:12,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:12,943 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:12,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1415277711] [2019-11-25 08:56:12,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:12,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2019-11-25 08:56:12,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101760065] [2019-11-25 08:56:12,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:56:12,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:12,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:56:12,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:56:12,996 INFO L87 Difference]: Start difference. First operand 107 states and 143 transitions. Second operand 9 states. [2019-11-25 08:56:13,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:13,319 INFO L93 Difference]: Finished difference Result 190 states and 240 transitions. [2019-11-25 08:56:13,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:56:13,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2019-11-25 08:56:13,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:13,322 INFO L225 Difference]: With dead ends: 190 [2019-11-25 08:56:13,323 INFO L226 Difference]: Without dead ends: 165 [2019-11-25 08:56:13,324 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:56:13,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-11-25 08:56:13,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119. [2019-11-25 08:56:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-25 08:56:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions. [2019-11-25 08:56:13,353 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 22 [2019-11-25 08:56:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:13,354 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 157 transitions. [2019-11-25 08:56:13,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:56:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions. [2019-11-25 08:56:13,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:56:13,357 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:13,357 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:13,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:13,568 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:13,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:13,569 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-11-25 08:56:13,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:13,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [771800829] [2019-11-25 08:56:13,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:13,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:56:13,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:13,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:56:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:13,730 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:13,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [771800829] [2019-11-25 08:56:13,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:13,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:56:13,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130220405] [2019-11-25 08:56:13,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:56:13,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:13,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:56:13,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:56:13,761 INFO L87 Difference]: Start difference. First operand 119 states and 157 transitions. Second operand 6 states. [2019-11-25 08:56:13,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:13,997 INFO L93 Difference]: Finished difference Result 177 states and 232 transitions. [2019-11-25 08:56:13,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:56:13,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-25 08:56:13,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:13,999 INFO L225 Difference]: With dead ends: 177 [2019-11-25 08:56:13,999 INFO L226 Difference]: Without dead ends: 173 [2019-11-25 08:56:14,000 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:56:14,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-11-25 08:56:14,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 115. [2019-11-25 08:56:14,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-11-25 08:56:14,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 153 transitions. [2019-11-25 08:56:14,014 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 153 transitions. Word has length 22 [2019-11-25 08:56:14,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:14,014 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 153 transitions. [2019-11-25 08:56:14,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:56:14,015 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 153 transitions. [2019-11-25 08:56:14,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-25 08:56:14,016 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:14,016 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:14,218 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:14,218 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:14,218 INFO L82 PathProgramCache]: Analyzing trace with hash 131253304, now seen corresponding path program 1 times [2019-11-25 08:56:14,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:14,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1165554461] [2019-11-25 08:56:14,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:14,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:56:14,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:14,367 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:14,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:14,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1165554461] [2019-11-25 08:56:14,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:14,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2019-11-25 08:56:14,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437876133] [2019-11-25 08:56:14,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:56:14,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:14,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:56:14,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:56:14,394 INFO L87 Difference]: Start difference. First operand 115 states and 153 transitions. Second operand 9 states. [2019-11-25 08:56:14,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:14,811 INFO L93 Difference]: Finished difference Result 173 states and 213 transitions. [2019-11-25 08:56:14,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-25 08:56:14,812 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-11-25 08:56:14,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:14,813 INFO L225 Difference]: With dead ends: 173 [2019-11-25 08:56:14,813 INFO L226 Difference]: Without dead ends: 168 [2019-11-25 08:56:14,814 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:56:14,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-11-25 08:56:14,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 120. [2019-11-25 08:56:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-11-25 08:56:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 158 transitions. [2019-11-25 08:56:14,832 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 158 transitions. Word has length 24 [2019-11-25 08:56:14,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:14,833 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 158 transitions. [2019-11-25 08:56:14,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:56:14,833 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 158 transitions. [2019-11-25 08:56:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-25 08:56:14,839 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:14,840 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, 1, 1] [2019-11-25 08:56:15,041 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:15,042 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:15,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:15,042 INFO L82 PathProgramCache]: Analyzing trace with hash 133100346, now seen corresponding path program 1 times [2019-11-25 08:56:15,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:15,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1548003614] [2019-11-25 08:56:15,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:15,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:56:15,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:15,139 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:15,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:15,150 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1548003614] [2019-11-25 08:56:15,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:15,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2019-11-25 08:56:15,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894141770] [2019-11-25 08:56:15,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:56:15,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:15,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:56:15,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:56:15,151 INFO L87 Difference]: Start difference. First operand 120 states and 158 transitions. Second operand 6 states. [2019-11-25 08:56:15,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:15,286 INFO L93 Difference]: Finished difference Result 137 states and 178 transitions. [2019-11-25 08:56:15,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:56:15,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-25 08:56:15,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:15,287 INFO L225 Difference]: With dead ends: 137 [2019-11-25 08:56:15,287 INFO L226 Difference]: Without dead ends: 118 [2019-11-25 08:56:15,288 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:56:15,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-11-25 08:56:15,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2019-11-25 08:56:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-25 08:56:15,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 142 transitions. [2019-11-25 08:56:15,298 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 142 transitions. Word has length 24 [2019-11-25 08:56:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:15,298 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 142 transitions. [2019-11-25 08:56:15,298 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:56:15,298 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 142 transitions. [2019-11-25 08:56:15,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-25 08:56:15,299 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:15,300 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, 1, 1] [2019-11-25 08:56:15,505 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:15,505 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:15,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:15,506 INFO L82 PathProgramCache]: Analyzing trace with hash -553029582, now seen corresponding path program 1 times [2019-11-25 08:56:15,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:15,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [826226548] [2019-11-25 08:56:15,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:15,680 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:56:15,680 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:56:15,881 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:15,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:56:15 BoogieIcfgContainer [2019-11-25 08:56:15,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:56:15,910 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:56:15,910 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:56:15,911 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:56:15,911 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:11" (3/4) ... [2019-11-25 08:56:15,913 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:56:15,984 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_117ad747-1649-4bb8-9c01-e1bf564b43ce/bin/uautomizer/witness.graphml [2019-11-25 08:56:15,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:56:15,989 INFO L168 Benchmark]: Toolchain (without parser) took 5306.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.6 MB). Free memory was 960.4 MB in the beginning and 1.2 GB in the end (delta: -217.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:15,990 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:15,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:15,991 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:15,992 INFO L168 Benchmark]: Boogie Preprocessor took 32.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:15,992 INFO L168 Benchmark]: RCFGBuilder took 568.58 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:15,993 INFO L168 Benchmark]: TraceAbstraction took 4128.84 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -80.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:15,993 INFO L168 Benchmark]: Witness Printer took 77.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:15,995 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 443.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 568.58 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4128.84 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -80.2 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 77.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L232] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] b = base2flt(mb, eb) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND FALSE !(!(cond)) [L105] delta = ea - eb [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 7 error locations. Result: UNSAFE, OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 555 SDtfs, 756 SDslu, 2473 SDs, 0 SdLazy, 427 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 239 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 202 ConstructedInterpolants, 0 QuantifiedInterpolants, 7672 SizeOfPredicates, 35 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...