./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/floats-cbmc-regression/float-no-simp6.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 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb ................................................................................................................................................................................................................................................................................... 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_1.3.100.v20150511-1540.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/floats-cbmc-regression/float-no-simp6.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 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb ............................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:15:24,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:15:24,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:15:24,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:15:24,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:15:24,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:15:24,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:15:24,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:15:24,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:15:24,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:15:24,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:15:24,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:15:24,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:15:24,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:15:24,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:15:24,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:15:24,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:15:24,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:15:24,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:15:24,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:15:24,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:15:24,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:15:24,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:15:24,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:15:24,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:15:24,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:15:24,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:15:24,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:15:24,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:15:24,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:15:24,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:15:24,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:15:24,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:15:24,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:15:24,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:15:24,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:15:24,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:15:24,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:15:24,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:15:24,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:15:24,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:15:24,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:15:24,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:15:24,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:15:24,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:15:24,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:15:24,193 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:15:24,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:15:24,194 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:15:24,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:15:24,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:15:24,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:15:24,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:15:24,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:15:24,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:15:24,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:15:24,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:15:24,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:15:24,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:15:24,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:15:24,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:15:24,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:15:24,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:15:24,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:15:24,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:15:24,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:15:24,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:15:24,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:15:24,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:15:24,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:15:24,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:15:24,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2020-10-20 00:15:24,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:15:24,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:15:24,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:15:24,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:15:24,461 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:15:24,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-10-20 00:15:24,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aca439da2/93d18dba46b64bd7b1f1d7a7aafb3456/FLAGd1ac2a177 [2020-10-20 00:15:25,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:15:25,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-10-20 00:15:25,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aca439da2/93d18dba46b64bd7b1f1d7a7aafb3456/FLAGd1ac2a177 [2020-10-20 00:15:25,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aca439da2/93d18dba46b64bd7b1f1d7a7aafb3456 [2020-10-20 00:15:25,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:15:25,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:15:25,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:25,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:15:25,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:15:25,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:25" (1/1) ... [2020-10-20 00:15:25,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d207cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:25, skipping insertion in model container [2020-10-20 00:15:25,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:25" (1/1) ... [2020-10-20 00:15:25,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:15:25,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:15:25,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:25,843 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:15:25,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:25,884 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:15:25,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:25 WrapperNode [2020-10-20 00:15:25,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:25,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:25,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:15:25,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:15:25,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:25" (1/1) ... [2020-10-20 00:15:25,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:25" (1/1) ... [2020-10-20 00:15:25,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:25,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:15:25,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:15:25,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:15:25,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:25" (1/1) ... [2020-10-20 00:15:25,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:25" (1/1) ... [2020-10-20 00:15:25,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:25" (1/1) ... [2020-10-20 00:15:25,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:25" (1/1) ... [2020-10-20 00:15:25,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:25" (1/1) ... [2020-10-20 00:15:25,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:25" (1/1) ... [2020-10-20 00:15:25,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:25" (1/1) ... [2020-10-20 00:15:25,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:15:25,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:15:25,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:15:25,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:15:25,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:25" (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 [2020-10-20 00:15:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:15:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:15:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:15:26,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:15:26,268 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:15:26,269 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:15:26,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:26 BoogieIcfgContainer [2020-10-20 00:15:26,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:15:26,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:15:26,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:15:26,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:15:26,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:15:25" (1/3) ... [2020-10-20 00:15:26,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d54f4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:26, skipping insertion in model container [2020-10-20 00:15:26,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:25" (2/3) ... [2020-10-20 00:15:26,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d54f4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:26, skipping insertion in model container [2020-10-20 00:15:26,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:26" (3/3) ... [2020-10-20 00:15:26,309 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-10-20 00:15:26,337 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:15:26,345 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 00:15:26,360 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 00:15:26,386 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:15:26,386 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:15:26,387 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:15:26,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:15:26,387 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:15:26,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:15:26,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:15:26,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:15:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-20 00:15:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 00:15:26,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:26,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 00:15:26,413 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:26,418 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-10-20 00:15:26,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:15:26,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812938277] [2020-10-20 00:15:26,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:15:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:15:26,527 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:15:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:15:26,544 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:15:26,566 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:15:26,567 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:15:26,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:15:26,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:15:26 BoogieIcfgContainer [2020-10-20 00:15:26,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:15:26,588 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:15:26,588 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:15:26,588 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:15:26,589 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:26" (3/4) ... [2020-10-20 00:15:26,592 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:15:26,592 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:15:26,595 INFO L168 Benchmark]: Toolchain (without parser) took 1128.72 ms. Allocated memory was 40.9 MB in the beginning and 44.0 MB in the end (delta: 3.1 MB). Free memory was 18.7 MB in the beginning and 19.0 MB in the end (delta: -320.6 kB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:26,596 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 30.9 MB. Free memory was 7.3 MB in the beginning and 7.3 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:26,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.75 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 17.9 MB in the beginning and 16.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:26,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.41 ms. Allocated memory is still 41.9 MB. Free memory was 16.8 MB in the beginning and 15.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:26,599 INFO L168 Benchmark]: Boogie Preprocessor took 22.57 ms. Allocated memory is still 41.9 MB. Free memory was 15.0 MB in the beginning and 13.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:26,600 INFO L168 Benchmark]: RCFGBuilder took 334.60 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 13.9 MB in the beginning and 18.2 MB in the end (delta: -4.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:26,601 INFO L168 Benchmark]: TraceAbstraction took 296.62 ms. Allocated memory was 43.5 MB in the beginning and 44.0 MB in the end (delta: 524.3 kB). Free memory was 17.7 MB in the beginning and 19.5 MB in the end (delta: -1.8 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:15:26,602 INFO L168 Benchmark]: Witness Printer took 4.22 ms. Allocated memory is still 44.0 MB. Free memory was 19.5 MB in the beginning and 19.0 MB in the end (delta: 508.2 kB). Peak memory consumption was 508.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:26,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 30.9 MB. Free memory was 7.3 MB in the beginning and 7.3 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 413.75 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 17.9 MB in the beginning and 16.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 42.41 ms. Allocated memory is still 41.9 MB. Free memory was 16.8 MB in the beginning and 15.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 22.57 ms. Allocated memory is still 41.9 MB. Free memory was 15.0 MB in the beginning and 13.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 334.60 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 13.9 MB in the beginning and 18.2 MB in the end (delta: -4.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 296.62 ms. Allocated memory was 43.5 MB in the beginning and 44.0 MB in the end (delta: 524.3 kB). Free memory was 17.7 MB in the beginning and 19.5 MB in the end (delta: -1.8 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 4.22 ms. Allocated memory is still 44.0 MB. Free memory was 19.5 MB in the beginning and 19.0 MB in the end (delta: 508.2 kB). Peak memory consumption was 508.2 kB. Max. memory is 14.3 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 someBinaryFLOATComparisonOperation at line 25, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L20] float f1=0x1.000000p-1f; [L21] float f2=0x1.fffffep-126f; [L23] float res = f1 * f2; [L25] COND TRUE !(res == 0x1.0p-126f) [L3] __assert_fail("0", "float-no-simp6.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.1.25-9a8b2e8 [2020-10-20 00:15:28,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:15:28,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:15:28,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:15:28,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:15:28,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:15:28,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:15:28,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:15:28,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:15:28,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:15:28,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:15:28,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:15:28,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:15:28,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:15:28,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:15:28,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:15:28,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:15:28,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:15:28,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:15:28,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:15:28,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:15:28,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:15:28,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:15:28,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:15:28,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:15:28,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:15:28,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:15:28,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:15:28,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:15:28,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:15:28,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:15:28,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:15:28,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:15:28,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:15:28,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:15:28,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:15:28,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:15:28,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:15:28,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:15:28,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:15:28,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:15:28,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:15:29,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:15:29,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:15:29,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:15:29,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:15:29,023 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:15:29,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:15:29,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:15:29,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:15:29,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:15:29,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:15:29,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:15:29,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:15:29,025 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:15:29,025 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:15:29,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:15:29,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:15:29,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:15:29,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:15:29,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:15:29,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:15:29,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:15:29,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:15:29,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:15:29,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:15:29,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:15:29,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:15:29,028 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:15:29,029 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:15:29,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:15:29,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:15:29,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:15:29,029 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2020-10-20 00:15:29,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:15:29,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:15:29,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:15:29,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:15:29,248 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:15:29,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-10-20 00:15:29,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4fec5753/27a325a3e58940ec8080e03c261d0041/FLAG702d424fd [2020-10-20 00:15:29,791 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:15:29,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-10-20 00:15:29,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4fec5753/27a325a3e58940ec8080e03c261d0041/FLAG702d424fd [2020-10-20 00:15:30,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4fec5753/27a325a3e58940ec8080e03c261d0041 [2020-10-20 00:15:30,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:15:30,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:15:30,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:30,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:15:30,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:15:30,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:30" (1/1) ... [2020-10-20 00:15:30,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16246387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30, skipping insertion in model container [2020-10-20 00:15:30,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:30" (1/1) ... [2020-10-20 00:15:30,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:15:30,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:15:30,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:30,489 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:15:30,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:30,533 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:15:30,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30 WrapperNode [2020-10-20 00:15:30,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:30,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:30,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:15:30,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:15:30,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30" (1/1) ... [2020-10-20 00:15:30,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30" (1/1) ... [2020-10-20 00:15:30,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:30,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:15:30,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:15:30,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:15:30,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30" (1/1) ... [2020-10-20 00:15:30,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30" (1/1) ... [2020-10-20 00:15:30,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30" (1/1) ... [2020-10-20 00:15:30,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30" (1/1) ... [2020-10-20 00:15:30,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30" (1/1) ... [2020-10-20 00:15:30,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30" (1/1) ... [2020-10-20 00:15:30,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30" (1/1) ... [2020-10-20 00:15:30,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:15:30,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:15:30,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:15:30,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:15:30,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30" (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 [2020-10-20 00:15:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:15:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:15:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:15:30,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:15:31,931 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:15:31,932 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:15:31,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:31 BoogieIcfgContainer [2020-10-20 00:15:31,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:15:31,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:15:31,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:15:31,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:15:31,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:15:30" (1/3) ... [2020-10-20 00:15:31,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6497ed8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:31, skipping insertion in model container [2020-10-20 00:15:31,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30" (2/3) ... [2020-10-20 00:15:31,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6497ed8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:31, skipping insertion in model container [2020-10-20 00:15:31,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:31" (3/3) ... [2020-10-20 00:15:31,943 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-10-20 00:15:31,955 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:15:31,962 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 00:15:31,977 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 00:15:32,001 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:15:32,001 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:15:32,001 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:15:32,002 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:15:32,002 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:15:32,003 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:15:32,003 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:15:32,003 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:15:32,019 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-20 00:15:32,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 00:15:32,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:32,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 00:15:32,026 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:32,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:32,033 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-10-20 00:15:32,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:15:32,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895402479] [2020-10-20 00:15:32,044 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 [2020-10-20 00:15:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:32,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 00:15:32,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:15:32,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:15:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:15:32,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895402479] [2020-10-20 00:15:32,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:15:32,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 00:15:32,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717810235] [2020-10-20 00:15:32,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:15:32,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:15:32,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:15:32,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:15:32,330 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 6 states. [2020-10-20 00:15:33,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:15:33,138 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-10-20 00:15:33,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:15:33,141 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-10-20 00:15:33,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:15:33,157 INFO L225 Difference]: With dead ends: 30 [2020-10-20 00:15:33,158 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 00:15:33,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:15:33,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 00:15:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 00:15:33,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 00:15:33,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-10-20 00:15:33,196 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2020-10-20 00:15:33,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:15:33,197 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-10-20 00:15:33,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:15:33,198 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-10-20 00:15:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:15:33,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:33,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:15:33,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:15:33,414 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:33,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:33,414 INFO L82 PathProgramCache]: Analyzing trace with hash 889691430, now seen corresponding path program 1 times [2020-10-20 00:15:33,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:15:33,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138339255] [2020-10-20 00:15:33,417 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 [2020-10-20 00:15:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:33,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 00:15:33,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:15:33,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:15:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:15:33,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138339255] [2020-10-20 00:15:33,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:15:33,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 00:15:33,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436634293] [2020-10-20 00:15:33,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:15:33,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:15:33,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:15:33,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:15:33,795 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 6 states. [2020-10-20 00:15:34,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:15:34,250 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-10-20 00:15:34,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:15:34,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-10-20 00:15:34,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:15:34,252 INFO L225 Difference]: With dead ends: 11 [2020-10-20 00:15:34,252 INFO L226 Difference]: Without dead ends: 9 [2020-10-20 00:15:34,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:15:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-20 00:15:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-20 00:15:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 00:15:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-10-20 00:15:34,255 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2020-10-20 00:15:34,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:15:34,256 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-10-20 00:15:34,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:15:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-10-20 00:15:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:15:34,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:34,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:15:34,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:15:34,467 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:34,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:34,467 INFO L82 PathProgramCache]: Analyzing trace with hash 295158664, now seen corresponding path program 1 times [2020-10-20 00:15:34,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:15:34,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844966150] [2020-10-20 00:15:34,468 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 [2020-10-20 00:15:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:34,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 00:15:34,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:15:34,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:15:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:15:34,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844966150] [2020-10-20 00:15:34,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:15:34,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 00:15:34,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853930127] [2020-10-20 00:15:34,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:15:34,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:15:34,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:15:34,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:15:34,860 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 6 states. [2020-10-20 00:15:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:15:35,805 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-10-20 00:15:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:15:35,814 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-20 00:15:35,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:15:35,814 INFO L225 Difference]: With dead ends: 9 [2020-10-20 00:15:35,815 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:15:35,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:15:35,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:15:35,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:15:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:15:35,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:15:35,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-10-20 00:15:35,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:15:35,817 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:15:35,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:15:35,817 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:15:35,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:15:36,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:15:36,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:15:36,025 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:15:36,025 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-10-20 00:15:36,025 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:15:36,025 INFO L274 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-10-20 00:15:36,025 INFO L274 CegarLoopResult]: For program point L38(lines 1 52) no Hoare annotation was computed. [2020-10-20 00:15:36,025 INFO L274 CegarLoopResult]: For program point L5(lines 5 26) no Hoare annotation was computed. [2020-10-20 00:15:36,026 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:15:36,026 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-20 00:15:36,026 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-10-20 00:15:36,026 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-10-20 00:15:36,026 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:15:36,026 INFO L274 CegarLoopResult]: For program point L3-4(line 3) no Hoare annotation was computed. [2020-10-20 00:15:36,026 INFO L274 CegarLoopResult]: For program point L3-5(line 3) no Hoare annotation was computed. [2020-10-20 00:15:36,026 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:15:36,026 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:15:36,027 INFO L274 CegarLoopResult]: For program point L28(lines 28 36) no Hoare annotation was computed. [2020-10-20 00:15:36,027 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:15:36,027 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:15:36,027 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-20 00:15:36,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:15:36 BoogieIcfgContainer [2020-10-20 00:15:36,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:15:36,034 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:15:36,034 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:15:36,034 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:15:36,035 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:31" (3/4) ... [2020-10-20 00:15:36,039 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:15:36,051 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 00:15:36,052 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 00:15:36,052 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:15:36,052 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:15:36,098 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:15:36,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:15:36,100 INFO L168 Benchmark]: Toolchain (without parser) took 5933.19 ms. Allocated memory was 35.7 MB in the beginning and 46.7 MB in the end (delta: 11.0 MB). Free memory was 16.3 MB in the beginning and 13.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:36,101 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 34.1 MB. Free memory was 10.2 MB in the beginning and 10.2 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:36,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.90 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 15.4 MB in the beginning and 23.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:36,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.91 ms. Allocated memory is still 44.0 MB. Free memory was 23.1 MB in the beginning and 21.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:36,103 INFO L168 Benchmark]: Boogie Preprocessor took 29.24 ms. Allocated memory is still 44.0 MB. Free memory was 21.4 MB in the beginning and 20.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:36,104 INFO L168 Benchmark]: RCFGBuilder took 1325.46 ms. Allocated memory was 44.0 MB in the beginning and 44.6 MB in the end (delta: 524.3 kB). Free memory was 20.1 MB in the beginning and 18.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:36,105 INFO L168 Benchmark]: TraceAbstraction took 4098.66 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 17.7 MB in the beginning and 16.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:36,105 INFO L168 Benchmark]: Witness Printer took 64.07 ms. Allocated memory is still 46.7 MB. Free memory was 16.1 MB in the beginning and 13.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:36,116 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 34.1 MB. Free memory was 10.2 MB in the beginning and 10.2 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 361.90 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 15.4 MB in the beginning and 23.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 42.91 ms. Allocated memory is still 44.0 MB. Free memory was 23.1 MB in the beginning and 21.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 29.24 ms. Allocated memory is still 44.0 MB. Free memory was 21.4 MB in the beginning and 20.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1325.46 ms. Allocated memory was 44.0 MB in the beginning and 44.6 MB in the end (delta: 524.3 kB). Free memory was 20.1 MB in the beginning and 18.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4098.66 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 17.7 MB in the beginning and 16.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * Witness Printer took 64.07 ms. Allocated memory is still 46.7 MB. Free memory was 16.1 MB in the beginning and 13.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 50 SDslu, 0 SDs, 0 SdLazy, 33 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 984 SizeOfPredicates, 11 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 correct! Received shutdown request...