./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4f20531c98faa0af8884f2ddaf47888911b3a46 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4f20531c98faa0af8884f2ddaf47888911b3a46 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-5485861 [2020-10-25 19:36:35,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:36:35,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:36:35,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:36:35,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:36:35,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:36:35,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:36:35,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:36:35,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:36:35,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:36:35,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:36:35,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:36:35,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:36:35,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:36:35,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:36:35,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:36:35,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:36:35,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:36:35,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:36:35,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:36:35,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:36:35,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:36:35,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:36:35,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:36:35,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:36:35,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:36:35,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:36:35,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:36:35,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:36:35,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:36:35,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:36:35,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:36:35,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:36:35,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:36:35,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:36:35,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:36:35,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:36:35,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:36:35,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:36:35,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:36:35,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:36:35,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:36:35,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:36:35,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:36:35,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:36:35,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:36:35,890 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:36:35,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:36:35,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:36:35,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:36:35,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:36:35,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:36:35,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:36:35,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:36:35,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:36:35,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:36:35,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:36:35,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:36:35,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:36:35,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:36:35,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:36:35,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:36:35,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:36:35,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:36:35,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:36:35,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:36:35,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:36:35,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:36:35,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:36:35,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:36:35,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:36:35,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-10-25 19:36:36,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:36:36,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:36:36,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:36:36,404 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:36:36,406 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:36:36,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-10-25 19:36:36,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22e07130/088ddf13b474471591a98e0d131c938f/FLAGf6c5e8985 [2020-10-25 19:36:37,335 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:36:37,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-10-25 19:36:37,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22e07130/088ddf13b474471591a98e0d131c938f/FLAGf6c5e8985 [2020-10-25 19:36:37,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22e07130/088ddf13b474471591a98e0d131c938f [2020-10-25 19:36:37,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:36:37,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:36:37,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:36:37,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:36:37,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:36:37,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:36:37" (1/1) ... [2020-10-25 19:36:37,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fabceec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:37, skipping insertion in model container [2020-10-25 19:36:37,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:36:37" (1/1) ... [2020-10-25 19:36:37,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:36:37,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:36:38,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:36:38,014 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:36:38,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:36:38,088 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:36:38,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:38 WrapperNode [2020-10-25 19:36:38,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:36:38,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:36:38,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:36:38,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:36:38,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:38" (1/1) ... [2020-10-25 19:36:38,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:38" (1/1) ... [2020-10-25 19:36:38,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:36:38,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:36:38,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:36:38,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:36:38,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:38" (1/1) ... [2020-10-25 19:36:38,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:38" (1/1) ... [2020-10-25 19:36:38,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:38" (1/1) ... [2020-10-25 19:36:38,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:38" (1/1) ... [2020-10-25 19:36:38,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:38" (1/1) ... [2020-10-25 19:36:38,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:38" (1/1) ... [2020-10-25 19:36:38,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:38" (1/1) ... [2020-10-25 19:36:38,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:36:38,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:36:38,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:36:38,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:36:38,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 19:36:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:36:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:36:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:36:38,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:36:39,260 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:36:39,261 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-10-25 19:36:39,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:39 BoogieIcfgContainer [2020-10-25 19:36:39,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:36:39,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:36:39,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:36:39,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:36:39,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:36:37" (1/3) ... [2020-10-25 19:36:39,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f892349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:36:39, skipping insertion in model container [2020-10-25 19:36:39,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:38" (2/3) ... [2020-10-25 19:36:39,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f892349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:36:39, skipping insertion in model container [2020-10-25 19:36:39,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:39" (3/3) ... [2020-10-25 19:36:39,275 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-10-25 19:36:39,288 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:36:39,294 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-25 19:36:39,310 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-25 19:36:39,340 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:36:39,340 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:36:39,341 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:36:39,341 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:36:39,341 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:36:39,341 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:36:39,342 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:36:39,342 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:36:39,362 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-10-25 19:36:39,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 19:36:39,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:39,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:39,371 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:39,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2020-10-25 19:36:39,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:39,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257766298] [2020-10-25 19:36:39,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:39,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257766298] [2020-10-25 19:36:39,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:39,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-25 19:36:39,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525819130] [2020-10-25 19:36:39,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:36:39,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:39,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:36:39,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:39,886 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 7 states. [2020-10-25 19:36:40,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:40,362 INFO L93 Difference]: Finished difference Result 464 states and 698 transitions. [2020-10-25 19:36:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-25 19:36:40,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-25 19:36:40,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:40,389 INFO L225 Difference]: With dead ends: 464 [2020-10-25 19:36:40,390 INFO L226 Difference]: Without dead ends: 348 [2020-10-25 19:36:40,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-25 19:36:40,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-25 19:36:40,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 142. [2020-10-25 19:36:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-25 19:36:40,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 206 transitions. [2020-10-25 19:36:40,465 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 206 transitions. Word has length 18 [2020-10-25 19:36:40,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:40,466 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 206 transitions. [2020-10-25 19:36:40,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:36:40,466 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 206 transitions. [2020-10-25 19:36:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 19:36:40,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:40,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:40,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:36:40,469 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:40,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1626703378, now seen corresponding path program 1 times [2020-10-25 19:36:40,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:40,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038477263] [2020-10-25 19:36:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:40,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038477263] [2020-10-25 19:36:40,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:40,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-25 19:36:40,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101534006] [2020-10-25 19:36:40,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:36:40,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:40,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:36:40,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:36:40,629 INFO L87 Difference]: Start difference. First operand 142 states and 206 transitions. Second operand 6 states. [2020-10-25 19:36:40,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:40,860 INFO L93 Difference]: Finished difference Result 299 states and 427 transitions. [2020-10-25 19:36:40,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 19:36:40,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-25 19:36:40,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:40,864 INFO L225 Difference]: With dead ends: 299 [2020-10-25 19:36:40,865 INFO L226 Difference]: Without dead ends: 215 [2020-10-25 19:36:40,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:36:40,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-25 19:36:40,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 202. [2020-10-25 19:36:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-25 19:36:40,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 289 transitions. [2020-10-25 19:36:40,930 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 289 transitions. Word has length 18 [2020-10-25 19:36:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:40,931 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 289 transitions. [2020-10-25 19:36:40,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:36:40,932 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 289 transitions. [2020-10-25 19:36:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:36:40,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:40,936 INFO L422 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] [2020-10-25 19:36:40,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:36:40,939 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:40,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:40,940 INFO L82 PathProgramCache]: Analyzing trace with hash 442130173, now seen corresponding path program 1 times [2020-10-25 19:36:40,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:40,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775285533] [2020-10-25 19:36:40,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:41,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775285533] [2020-10-25 19:36:41,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:41,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-25 19:36:41,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177449991] [2020-10-25 19:36:41,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:36:41,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:41,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:36:41,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:41,160 INFO L87 Difference]: Start difference. First operand 202 states and 289 transitions. Second operand 7 states. [2020-10-25 19:36:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:41,521 INFO L93 Difference]: Finished difference Result 347 states and 465 transitions. [2020-10-25 19:36:41,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-25 19:36:41,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-25 19:36:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:41,525 INFO L225 Difference]: With dead ends: 347 [2020-10-25 19:36:41,525 INFO L226 Difference]: Without dead ends: 299 [2020-10-25 19:36:41,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-25 19:36:41,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-25 19:36:41,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 191. [2020-10-25 19:36:41,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-25 19:36:41,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 271 transitions. [2020-10-25 19:36:41,553 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 271 transitions. Word has length 22 [2020-10-25 19:36:41,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:41,553 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 271 transitions. [2020-10-25 19:36:41,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:36:41,554 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 271 transitions. [2020-10-25 19:36:41,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-25 19:36:41,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:41,556 INFO L422 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, 1, 1] [2020-10-25 19:36:41,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 19:36:41,557 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:41,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:41,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1963023460, now seen corresponding path program 1 times [2020-10-25 19:36:41,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:41,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845944701] [2020-10-25 19:36:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:41,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845944701] [2020-10-25 19:36:41,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:41,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:36:41,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538260831] [2020-10-25 19:36:41,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:36:41,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:41,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:36:41,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:36:41,616 INFO L87 Difference]: Start difference. First operand 191 states and 271 transitions. Second operand 3 states. [2020-10-25 19:36:41,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:41,645 INFO L93 Difference]: Finished difference Result 345 states and 487 transitions. [2020-10-25 19:36:41,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:36:41,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-25 19:36:41,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:41,648 INFO L225 Difference]: With dead ends: 345 [2020-10-25 19:36:41,649 INFO L226 Difference]: Without dead ends: 270 [2020-10-25 19:36:41,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:36:41,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-25 19:36:41,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 241. [2020-10-25 19:36:41,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-25 19:36:41,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 336 transitions. [2020-10-25 19:36:41,674 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 336 transitions. Word has length 26 [2020-10-25 19:36:41,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:41,674 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 336 transitions. [2020-10-25 19:36:41,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:36:41,675 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 336 transitions. [2020-10-25 19:36:41,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-25 19:36:41,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:41,680 INFO L422 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, 1, 1] [2020-10-25 19:36:41,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 19:36:41,681 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:41,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:41,682 INFO L82 PathProgramCache]: Analyzing trace with hash -855546000, now seen corresponding path program 1 times [2020-10-25 19:36:41,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:41,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122317851] [2020-10-25 19:36:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:41,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122317851] [2020-10-25 19:36:41,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:41,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 19:36:41,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481776654] [2020-10-25 19:36:41,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 19:36:41,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:41,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 19:36:41,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:36:41,778 INFO L87 Difference]: Start difference. First operand 241 states and 336 transitions. Second operand 5 states. [2020-10-25 19:36:41,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:41,914 INFO L93 Difference]: Finished difference Result 608 states and 834 transitions. [2020-10-25 19:36:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 19:36:41,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-25 19:36:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:41,918 INFO L225 Difference]: With dead ends: 608 [2020-10-25 19:36:41,918 INFO L226 Difference]: Without dead ends: 443 [2020-10-25 19:36:41,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:36:41,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-25 19:36:41,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 298. [2020-10-25 19:36:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-25 19:36:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 413 transitions. [2020-10-25 19:36:41,939 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 413 transitions. Word has length 26 [2020-10-25 19:36:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:41,940 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 413 transitions. [2020-10-25 19:36:41,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 19:36:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 413 transitions. [2020-10-25 19:36:41,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-25 19:36:41,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:41,943 INFO L422 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, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:41,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 19:36:41,944 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:41,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:41,945 INFO L82 PathProgramCache]: Analyzing trace with hash 397693116, now seen corresponding path program 1 times [2020-10-25 19:36:41,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:41,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414104165] [2020-10-25 19:36:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:42,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414104165] [2020-10-25 19:36:42,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:42,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 19:36:42,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663760525] [2020-10-25 19:36:42,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:36:42,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:42,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:36:42,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:36:42,011 INFO L87 Difference]: Start difference. First operand 298 states and 413 transitions. Second operand 4 states. [2020-10-25 19:36:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:42,055 INFO L93 Difference]: Finished difference Result 429 states and 595 transitions. [2020-10-25 19:36:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 19:36:42,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-25 19:36:42,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:42,058 INFO L225 Difference]: With dead ends: 429 [2020-10-25 19:36:42,058 INFO L226 Difference]: Without dead ends: 354 [2020-10-25 19:36:42,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:36:42,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-25 19:36:42,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 312. [2020-10-25 19:36:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-25 19:36:42,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 423 transitions. [2020-10-25 19:36:42,077 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 423 transitions. Word has length 30 [2020-10-25 19:36:42,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:42,078 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 423 transitions. [2020-10-25 19:36:42,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:36:42,078 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 423 transitions. [2020-10-25 19:36:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-25 19:36:42,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:42,080 INFO L422 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, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:42,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 19:36:42,081 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:42,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:42,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2020-10-25 19:36:42,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:42,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400664985] [2020-10-25 19:36:42,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:42,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:42,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400664985] [2020-10-25 19:36:42,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:42,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-25 19:36:42,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898335551] [2020-10-25 19:36:42,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:36:42,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:42,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:36:42,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:36:42,202 INFO L87 Difference]: Start difference. First operand 312 states and 423 transitions. Second operand 6 states. [2020-10-25 19:36:42,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:42,569 INFO L93 Difference]: Finished difference Result 813 states and 1106 transitions. [2020-10-25 19:36:42,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 19:36:42,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-25 19:36:42,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:42,574 INFO L225 Difference]: With dead ends: 813 [2020-10-25 19:36:42,575 INFO L226 Difference]: Without dead ends: 704 [2020-10-25 19:36:42,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-25 19:36:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-10-25 19:36:42,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 450. [2020-10-25 19:36:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-25 19:36:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 614 transitions. [2020-10-25 19:36:42,611 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 614 transitions. Word has length 30 [2020-10-25 19:36:42,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:42,611 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 614 transitions. [2020-10-25 19:36:42,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:36:42,612 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 614 transitions. [2020-10-25 19:36:42,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-25 19:36:42,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:42,613 INFO L422 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, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:42,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 19:36:42,614 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:42,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:42,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1878873742, now seen corresponding path program 1 times [2020-10-25 19:36:42,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:42,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236434430] [2020-10-25 19:36:42,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:36:42,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:36:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:36:42,700 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:36:42,735 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 19:36:42,736 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 19:36:42,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-25 19:36:42,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:36:42 BoogieIcfgContainer [2020-10-25 19:36:42,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:36:42,786 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:36:42,786 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:36:42,786 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:36:42,787 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:39" (3/4) ... [2020-10-25 19:36:42,791 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 19:36:42,791 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:36:42,794 INFO L168 Benchmark]: Toolchain (without parser) took 5168.05 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 24.9 MB in the beginning and 48.9 MB in the end (delta: -24.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:42,795 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 39.8 MB. Free memory was 18.2 MB in the beginning and 18.1 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:36:42,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.23 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 22.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:42,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.01 ms. Allocated memory is still 48.2 MB. Free memory was 22.6 MB in the beginning and 32.0 MB in the end (delta: -9.4 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:42,797 INFO L168 Benchmark]: Boogie Preprocessor took 91.61 ms. Allocated memory is still 48.2 MB. Free memory was 32.0 MB in the beginning and 30.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:42,798 INFO L168 Benchmark]: RCFGBuilder took 1002.89 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 30.1 MB in the beginning and 32.1 MB in the end (delta: -2.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:42,799 INFO L168 Benchmark]: TraceAbstraction took 3520.00 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 31.5 MB in the beginning and 49.2 MB in the end (delta: -17.7 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:42,800 INFO L168 Benchmark]: Witness Printer took 5.30 ms. Allocated memory is still 86.0 MB. Free memory was 49.2 MB in the beginning and 48.9 MB in the end (delta: 279.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:36:42,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 39.8 MB. Free memory was 18.2 MB in the beginning and 18.1 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 451.23 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 22.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.01 ms. Allocated memory is still 48.2 MB. Free memory was 22.6 MB in the beginning and 32.0 MB in the end (delta: -9.4 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 91.61 ms. Allocated memory is still 48.2 MB. Free memory was 32.0 MB in the beginning and 30.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1002.89 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 30.1 MB in the beginning and 32.1 MB in the end (delta: -2.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3520.00 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 31.5 MB in the beginning and 49.2 MB in the end (delta: -17.7 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.30 ms. Allocated memory is still 86.0 MB. Free memory was 49.2 MB in the beginning and 48.9 MB in the end (delta: 279.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L244] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_1-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 102 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1043 SDtfs, 2629 SDslu, 3208 SDs, 0 SdLazy, 590 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=450occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 797 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 10347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.2.0-5485861 [2020-10-25 19:36:45,451 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-25 19:36:45,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:36:45,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:36:45,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:36:45,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:36:45,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:36:45,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:36:45,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:36:45,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:36:45,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:36:45,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:36:45,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:36:45,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:36:45,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:36:45,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:36:45,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:36:45,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:36:45,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:36:45,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:36:45,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:36:45,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:36:45,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:36:45,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:36:45,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:36:45,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:36:45,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:36:45,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:36:45,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:36:45,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:36:45,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:36:45,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 19:36:45,624 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:36:45,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:36:45,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:36:45,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:36:45,626 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:36:45,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:36:45,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:36:45,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:36:45,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:36:45,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:36:45,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:36:45,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:36:45,632 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 19:36:45,633 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 19:36:45,633 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:36:45,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:36:45,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:36:45,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:36:45,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:36:45,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:36:45,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:36:45,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:36:45,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:36:45,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:36:45,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:36:45,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:36:45,636 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 19:36:45,636 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 19:36:45,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:36:45,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:36:45,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 19:36:45,637 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-10-25 19:36:46,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:36:46,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:36:46,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:36:46,128 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:36:46,128 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:36:46,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-10-25 19:36:46,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d446d932/96ecdea2c0f84e3f97c64e2f461f3813/FLAG2fe87fbfe [2020-10-25 19:36:46,892 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:36:46,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-10-25 19:36:46,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d446d932/96ecdea2c0f84e3f97c64e2f461f3813/FLAG2fe87fbfe [2020-10-25 19:36:47,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d446d932/96ecdea2c0f84e3f97c64e2f461f3813 [2020-10-25 19:36:47,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:36:47,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:36:47,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:36:47,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:36:47,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:36:47,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@429bdf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47, skipping insertion in model container [2020-10-25 19:36:47,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:36:47,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:36:47,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:36:47,562 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:36:47,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:36:47,670 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:36:47,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47 WrapperNode [2020-10-25 19:36:47,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:36:47,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:36:47,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:36:47,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:36:47,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:36:47,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:36:47,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:36:47,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:36:47,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:36:47,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:36:47,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:36:47,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:36:47,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 19:36:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 19:36:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:36:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:36:47,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:36:48,681 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:36:48,681 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-10-25 19:36:48,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:48 BoogieIcfgContainer [2020-10-25 19:36:48,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:36:48,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:36:48,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:36:48,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:36:48,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:36:47" (1/3) ... [2020-10-25 19:36:48,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a56192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:36:48, skipping insertion in model container [2020-10-25 19:36:48,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (2/3) ... [2020-10-25 19:36:48,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a56192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:36:48, skipping insertion in model container [2020-10-25 19:36:48,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:48" (3/3) ... [2020-10-25 19:36:48,694 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-10-25 19:36:48,707 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:36:48,713 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-25 19:36:48,730 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-25 19:36:48,761 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:36:48,762 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:36:48,762 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:36:48,762 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:36:48,762 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:36:48,763 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:36:48,763 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:36:48,763 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:36:48,783 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-10-25 19:36:48,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 19:36:48,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:48,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:48,793 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:48,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:48,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2020-10-25 19:36:48,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:36:48,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659240134] [2020-10-25 19:36:48,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-25 19:36:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:48,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 19:36:48,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:49,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:36:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:49,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659240134] [2020-10-25 19:36:49,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:49,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-25 19:36:49,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819485614] [2020-10-25 19:36:49,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 19:36:49,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:36:49,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 19:36:49,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:36:49,116 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 5 states. [2020-10-25 19:36:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:49,378 INFO L93 Difference]: Finished difference Result 403 states and 613 transitions. [2020-10-25 19:36:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 19:36:49,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-25 19:36:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:49,396 INFO L225 Difference]: With dead ends: 403 [2020-10-25 19:36:49,396 INFO L226 Difference]: Without dead ends: 295 [2020-10-25 19:36:49,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:36:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-25 19:36:49,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 120. [2020-10-25 19:36:49,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-25 19:36:49,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2020-10-25 19:36:49,461 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 18 [2020-10-25 19:36:49,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:49,461 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2020-10-25 19:36:49,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 19:36:49,462 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2020-10-25 19:36:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:36:49,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:49,469 INFO L422 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] [2020-10-25 19:36:49,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 19:36:49,685 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:49,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:49,687 INFO L82 PathProgramCache]: Analyzing trace with hash -908455500, now seen corresponding path program 1 times [2020-10-25 19:36:49,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:36:49,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283379289] [2020-10-25 19:36:49,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-25 19:36:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:49,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 19:36:49,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:49,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:36:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:49,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283379289] [2020-10-25 19:36:49,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:49,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-25 19:36:49,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039085630] [2020-10-25 19:36:49,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 19:36:49,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:36:49,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 19:36:49,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:36:49,823 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand 5 states. [2020-10-25 19:36:50,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:50,047 INFO L93 Difference]: Finished difference Result 394 states and 543 transitions. [2020-10-25 19:36:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 19:36:50,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-25 19:36:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:50,051 INFO L225 Difference]: With dead ends: 394 [2020-10-25 19:36:50,051 INFO L226 Difference]: Without dead ends: 337 [2020-10-25 19:36:50,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:36:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-25 19:36:50,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 186. [2020-10-25 19:36:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-25 19:36:50,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 269 transitions. [2020-10-25 19:36:50,077 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 269 transitions. Word has length 22 [2020-10-25 19:36:50,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:50,077 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 269 transitions. [2020-10-25 19:36:50,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 19:36:50,077 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 269 transitions. [2020-10-25 19:36:50,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:36:50,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:50,079 INFO L422 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] [2020-10-25 19:36:50,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 19:36:50,294 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:50,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:50,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1301482510, now seen corresponding path program 1 times [2020-10-25 19:36:50,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:36:50,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870784970] [2020-10-25 19:36:50,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-25 19:36:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:50,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 19:36:50,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:50,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:36:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:50,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870784970] [2020-10-25 19:36:50,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:50,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-25 19:36:50,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966214718] [2020-10-25 19:36:50,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 19:36:50,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:36:50,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 19:36:50,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:36:50,420 INFO L87 Difference]: Start difference. First operand 186 states and 269 transitions. Second operand 5 states. [2020-10-25 19:36:50,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:50,573 INFO L93 Difference]: Finished difference Result 378 states and 535 transitions. [2020-10-25 19:36:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 19:36:50,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-25 19:36:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:50,577 INFO L225 Difference]: With dead ends: 378 [2020-10-25 19:36:50,577 INFO L226 Difference]: Without dead ends: 295 [2020-10-25 19:36:50,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-25 19:36:50,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2020-10-25 19:36:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-25 19:36:50,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 401 transitions. [2020-10-25 19:36:50,602 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 401 transitions. Word has length 22 [2020-10-25 19:36:50,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:50,603 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 401 transitions. [2020-10-25 19:36:50,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 19:36:50,603 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 401 transitions. [2020-10-25 19:36:50,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:36:50,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:50,605 INFO L422 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] [2020-10-25 19:36:50,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-25 19:36:50,822 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:50,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:50,823 INFO L82 PathProgramCache]: Analyzing trace with hash 473524852, now seen corresponding path program 1 times [2020-10-25 19:36:50,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:36:50,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174432058] [2020-10-25 19:36:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-25 19:36:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:50,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-25 19:36:50,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:50,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:36:50,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:50,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174432058] [2020-10-25 19:36:50,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:50,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-25 19:36:50,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328548958] [2020-10-25 19:36:50,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:36:50,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:36:50,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:36:50,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:36:50,976 INFO L87 Difference]: Start difference. First operand 278 states and 401 transitions. Second operand 6 states. [2020-10-25 19:36:51,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:51,185 INFO L93 Difference]: Finished difference Result 395 states and 553 transitions. [2020-10-25 19:36:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 19:36:51,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-25 19:36:51,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:51,190 INFO L225 Difference]: With dead ends: 395 [2020-10-25 19:36:51,190 INFO L226 Difference]: Without dead ends: 318 [2020-10-25 19:36:51,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:36:51,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-25 19:36:51,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2020-10-25 19:36:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-25 19:36:51,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 365 transitions. [2020-10-25 19:36:51,229 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 365 transitions. Word has length 22 [2020-10-25 19:36:51,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:51,230 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 365 transitions. [2020-10-25 19:36:51,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:36:51,230 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 365 transitions. [2020-10-25 19:36:51,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-25 19:36:51,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:51,240 INFO L422 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, 1, 1] [2020-10-25 19:36:51,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-25 19:36:51,450 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:51,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:51,451 INFO L82 PathProgramCache]: Analyzing trace with hash 177561437, now seen corresponding path program 1 times [2020-10-25 19:36:51,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:36:51,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933095552] [2020-10-25 19:36:51,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-25 19:36:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:51,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 19:36:51,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:51,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:36:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:51,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933095552] [2020-10-25 19:36:51,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:51,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-10-25 19:36:51,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459346841] [2020-10-25 19:36:51,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:36:51,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:36:51,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:36:51,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:51,601 INFO L87 Difference]: Start difference. First operand 258 states and 365 transitions. Second operand 7 states. [2020-10-25 19:36:51,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:51,953 INFO L93 Difference]: Finished difference Result 402 states and 541 transitions. [2020-10-25 19:36:51,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-25 19:36:51,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-25 19:36:51,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:51,956 INFO L225 Difference]: With dead ends: 402 [2020-10-25 19:36:51,956 INFO L226 Difference]: Without dead ends: 354 [2020-10-25 19:36:51,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-25 19:36:51,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-25 19:36:51,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2020-10-25 19:36:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-25 19:36:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2020-10-25 19:36:51,972 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 26 [2020-10-25 19:36:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:51,972 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2020-10-25 19:36:51,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:36:51,973 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2020-10-25 19:36:51,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-25 19:36:51,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:51,974 INFO L422 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, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:52,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-25 19:36:52,187 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:52,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:52,188 INFO L82 PathProgramCache]: Analyzing trace with hash 397693116, now seen corresponding path program 1 times [2020-10-25 19:36:52,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:36:52,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772602535] [2020-10-25 19:36:52,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-25 19:36:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:52,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-25 19:36:52,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:52,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:36:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:52,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772602535] [2020-10-25 19:36:52,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:52,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-25 19:36:52,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430858531] [2020-10-25 19:36:52,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:36:52,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:36:52,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:36:52,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:36:52,293 INFO L87 Difference]: Start difference. First operand 248 states and 348 transitions. Second operand 6 states. [2020-10-25 19:36:52,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:52,366 INFO L93 Difference]: Finished difference Result 456 states and 635 transitions. [2020-10-25 19:36:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 19:36:52,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-25 19:36:52,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:52,370 INFO L225 Difference]: With dead ends: 456 [2020-10-25 19:36:52,370 INFO L226 Difference]: Without dead ends: 381 [2020-10-25 19:36:52,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:52,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-25 19:36:52,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 310. [2020-10-25 19:36:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-10-25 19:36:52,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 423 transitions. [2020-10-25 19:36:52,389 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 423 transitions. Word has length 30 [2020-10-25 19:36:52,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:52,390 INFO L481 AbstractCegarLoop]: Abstraction has 310 states and 423 transitions. [2020-10-25 19:36:52,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:36:52,390 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 423 transitions. [2020-10-25 19:36:52,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-25 19:36:52,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:52,392 INFO L422 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, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:52,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-25 19:36:52,606 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:52,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:52,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2020-10-25 19:36:52,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:36:52,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957214321] [2020-10-25 19:36:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-25 19:36:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:52,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-25 19:36:52,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:52,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:52,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:36:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:52,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957214321] [2020-10-25 19:36:52,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:52,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-10-25 19:36:52,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859499140] [2020-10-25 19:36:52,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 19:36:52,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:36:52,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 19:36:52,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:36:52,768 INFO L87 Difference]: Start difference. First operand 310 states and 423 transitions. Second operand 8 states. [2020-10-25 19:36:53,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:53,538 INFO L93 Difference]: Finished difference Result 912 states and 1264 transitions. [2020-10-25 19:36:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-25 19:36:53,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-25 19:36:53,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:53,544 INFO L225 Difference]: With dead ends: 912 [2020-10-25 19:36:53,544 INFO L226 Difference]: Without dead ends: 805 [2020-10-25 19:36:53,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-25 19:36:53,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-10-25 19:36:53,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 446. [2020-10-25 19:36:53,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-25 19:36:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 608 transitions. [2020-10-25 19:36:53,585 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 608 transitions. Word has length 30 [2020-10-25 19:36:53,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:53,586 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 608 transitions. [2020-10-25 19:36:53,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 19:36:53,586 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 608 transitions. [2020-10-25 19:36:53,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 19:36:53,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:53,588 INFO L422 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:53,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-25 19:36:53,803 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:53,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:53,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1434134121, now seen corresponding path program 1 times [2020-10-25 19:36:53,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:36:53,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463168577] [2020-10-25 19:36:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-25 19:36:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:53,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-25 19:36:53,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:53,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:36:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:54,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463168577] [2020-10-25 19:36:54,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:54,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2020-10-25 19:36:54,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672097463] [2020-10-25 19:36:54,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-25 19:36:54,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:36:54,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-25 19:36:54,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-25 19:36:54,047 INFO L87 Difference]: Start difference. First operand 446 states and 608 transitions. Second operand 13 states. [2020-10-25 19:36:55,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:55,284 INFO L93 Difference]: Finished difference Result 746 states and 1004 transitions. [2020-10-25 19:36:55,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-25 19:36:55,285 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-25 19:36:55,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:55,290 INFO L225 Difference]: With dead ends: 746 [2020-10-25 19:36:55,290 INFO L226 Difference]: Without dead ends: 705 [2020-10-25 19:36:55,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2020-10-25 19:36:55,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-10-25 19:36:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 444. [2020-10-25 19:36:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-10-25 19:36:55,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 606 transitions. [2020-10-25 19:36:55,334 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 606 transitions. Word has length 31 [2020-10-25 19:36:55,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:55,334 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 606 transitions. [2020-10-25 19:36:55,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-25 19:36:55,334 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 606 transitions. [2020-10-25 19:36:55,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 19:36:55,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:55,336 INFO L422 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:55,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-25 19:36:55,546 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:55,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:55,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1376875819, now seen corresponding path program 1 times [2020-10-25 19:36:55,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:36:55,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765569918] [2020-10-25 19:36:55,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-25 19:36:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:55,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 19:36:55,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:55,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:36:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:55,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765569918] [2020-10-25 19:36:55,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:55,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-25 19:36:55,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854871854] [2020-10-25 19:36:55,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:36:55,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:36:55,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:36:55,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:36:55,642 INFO L87 Difference]: Start difference. First operand 444 states and 606 transitions. Second operand 6 states. [2020-10-25 19:36:55,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:55,759 INFO L93 Difference]: Finished difference Result 501 states and 681 transitions. [2020-10-25 19:36:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 19:36:55,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-25 19:36:55,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:55,763 INFO L225 Difference]: With dead ends: 501 [2020-10-25 19:36:55,763 INFO L226 Difference]: Without dead ends: 496 [2020-10-25 19:36:55,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:36:55,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-10-25 19:36:55,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 444. [2020-10-25 19:36:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-10-25 19:36:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 601 transitions. [2020-10-25 19:36:55,814 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 601 transitions. Word has length 31 [2020-10-25 19:36:55,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:55,814 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 601 transitions. [2020-10-25 19:36:55,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:36:55,815 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 601 transitions. [2020-10-25 19:36:55,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-25 19:36:55,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:55,816 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:56,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-25 19:36:56,034 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:56,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:56,035 INFO L82 PathProgramCache]: Analyzing trace with hash 6505427, now seen corresponding path program 1 times [2020-10-25 19:36:56,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:36:56,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845452095] [2020-10-25 19:36:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-25 19:36:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:56,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-25 19:36:56,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:56,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:36:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:56,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845452095] [2020-10-25 19:36:56,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:56,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-25 19:36:56,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491151782] [2020-10-25 19:36:56,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:36:56,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:36:56,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:36:56,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:36:56,152 INFO L87 Difference]: Start difference. First operand 444 states and 601 transitions. Second operand 6 states. [2020-10-25 19:36:56,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:56,256 INFO L93 Difference]: Finished difference Result 901 states and 1199 transitions. [2020-10-25 19:36:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 19:36:56,257 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-25 19:36:56,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:56,262 INFO L225 Difference]: With dead ends: 901 [2020-10-25 19:36:56,262 INFO L226 Difference]: Without dead ends: 842 [2020-10-25 19:36:56,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:56,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-10-25 19:36:56,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 476. [2020-10-25 19:36:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-25 19:36:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 646 transitions. [2020-10-25 19:36:56,301 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 646 transitions. Word has length 32 [2020-10-25 19:36:56,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:56,302 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 646 transitions. [2020-10-25 19:36:56,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:36:56,302 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 646 transitions. [2020-10-25 19:36:56,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-25 19:36:56,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:56,303 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:56,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-25 19:36:56,523 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:56,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:56,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1711625809, now seen corresponding path program 1 times [2020-10-25 19:36:56,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:36:56,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273528164] [2020-10-25 19:36:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-25 19:36:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:36:56,589 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:36:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:36:56,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:36:56,688 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 19:36:56,689 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 19:36:56,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-25 19:36:56,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:36:56 BoogieIcfgContainer [2020-10-25 19:36:56,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:36:56,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:36:56,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:36:56,952 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:36:56,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:48" (3/4) ... [2020-10-25 19:36:56,960 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 19:36:57,068 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:36:57,069 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:36:57,077 INFO L168 Benchmark]: Toolchain (without parser) took 9878.03 ms. Allocated memory was 46.1 MB in the beginning and 121.6 MB in the end (delta: 75.5 MB). Free memory was 23.6 MB in the beginning and 82.0 MB in the end (delta: -58.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:57,077 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 46.1 MB. Free memory was 31.8 MB in the beginning and 31.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:36:57,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.77 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 20.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:57,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.63 ms. Allocated memory is still 46.1 MB. Free memory was 20.6 MB in the beginning and 30.0 MB in the end (delta: -9.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:57,081 INFO L168 Benchmark]: Boogie Preprocessor took 51.82 ms. Allocated memory is still 46.1 MB. Free memory was 30.0 MB in the beginning and 28.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:57,082 INFO L168 Benchmark]: RCFGBuilder took 895.63 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 27.9 MB in the beginning and 33.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:57,083 INFO L168 Benchmark]: TraceAbstraction took 8265.56 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 32.8 MB in the beginning and 86.2 MB in the end (delta: -53.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:57,084 INFO L168 Benchmark]: Witness Printer took 117.11 ms. Allocated memory is still 121.6 MB. Free memory was 85.2 MB in the beginning and 82.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:57,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 46.1 MB. Free memory was 31.8 MB in the beginning and 31.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 466.77 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 20.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.63 ms. Allocated memory is still 46.1 MB. Free memory was 20.6 MB in the beginning and 30.0 MB in the end (delta: -9.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.82 ms. Allocated memory is still 46.1 MB. Free memory was 30.0 MB in the beginning and 28.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 895.63 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 27.9 MB in the beginning and 33.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8265.56 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 32.8 MB in the beginning and 86.2 MB in the end (delta: -53.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 117.11 ms. Allocated memory is still 121.6 MB. Free memory was 85.2 MB in the beginning and 82.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L244] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_1-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 102 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1434 SDtfs, 3934 SDslu, 5661 SDs, 0 SdLazy, 1202 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 465 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=476occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 1618 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 26009 SizeOfPredicates, 41 NumberOfNonLiveVariables, 764 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...