./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/nla-digbench/freire2.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30689778d55a79f9fe352193122f8e3d18bcc1bb .................................................................................................................................................................................................................................... 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 -Xmx12G -Xms1G -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/nla-digbench/freire2.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30689778d55a79f9fe352193122f8e3d18bcc1bb ...................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 14:12:20,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 14:12:20,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 14:12:20,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 14:12:20,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 14:12:20,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 14:12:20,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 14:12:20,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 14:12:20,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 14:12:20,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 14:12:20,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 14:12:20,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 14:12:20,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 14:12:20,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 14:12:20,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 14:12:20,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 14:12:20,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 14:12:20,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 14:12:20,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 14:12:20,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 14:12:20,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 14:12:20,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 14:12:20,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 14:12:20,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 14:12:20,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 14:12:20,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 14:12:20,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 14:12:20,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 14:12:20,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 14:12:20,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 14:12:20,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 14:12:20,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 14:12:20,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 14:12:20,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 14:12:20,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 14:12:20,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 14:12:20,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 14:12:20,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 14:12:20,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 14:12:20,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 14:12:20,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 14:12:20,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 14:12:20,115 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 14:12:20,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 14:12:20,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 14:12:20,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 14:12:20,117 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 14:12:20,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 14:12:20,118 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 14:12:20,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 14:12:20,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 14:12:20,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 14:12:20,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 14:12:20,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 14:12:20,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 14:12:20,120 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 14:12:20,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 14:12:20,121 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 14:12:20,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 14:12:20,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 14:12:20,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 14:12:20,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 14:12:20,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 14:12:20,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 14:12:20,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 14:12:20,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 14:12:20,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 14:12:20,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 14:12:20,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 14:12:20,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 14:12:20,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 14:12:20,125 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-28 14:12:20,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 14:12:20,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 14:12:20,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 14:12:20,557 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 14:12:20,557 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 14:12:20,558 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-28 14:12:20,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02087a92e/d7ac7f37127c4b5aa8238cb2c045a246/FLAGde8aedbc5 [2019-11-28 14:12:21,059 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 14:12:21,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-28 14:12:21,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02087a92e/d7ac7f37127c4b5aa8238cb2c045a246/FLAGde8aedbc5 [2019-11-28 14:12:21,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02087a92e/d7ac7f37127c4b5aa8238cb2c045a246 [2019-11-28 14:12:21,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 14:12:21,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 14:12:21,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 14:12:21,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 14:12:21,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 14:12:21,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:12:21" (1/1) ... [2019-11-28 14:12:21,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6762ddd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:21, skipping insertion in model container [2019-11-28 14:12:21,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:12:21" (1/1) ... [2019-11-28 14:12:21,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 14:12:21,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 14:12:21,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 14:12:21,809 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 14:12:21,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 14:12:21,929 INFO L208 MainTranslator]: Completed translation [2019-11-28 14:12:21,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:21 WrapperNode [2019-11-28 14:12:21,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 14:12:21,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 14:12:21,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 14:12:21,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 14:12:21,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:21" (1/1) ... [2019-11-28 14:12:21,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:21" (1/1) ... [2019-11-28 14:12:21,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 14:12:21,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 14:12:21,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 14:12:21,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 14:12:21,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:21" (1/1) ... [2019-11-28 14:12:21,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:21" (1/1) ... [2019-11-28 14:12:21,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:21" (1/1) ... [2019-11-28 14:12:21,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:21" (1/1) ... [2019-11-28 14:12:21,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:21" (1/1) ... [2019-11-28 14:12:21,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:21" (1/1) ... [2019-11-28 14:12:21,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:21" (1/1) ... [2019-11-28 14:12:22,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 14:12:22,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 14:12:22,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 14:12:22,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 14:12:22,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:21" (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 [2019-11-28 14:12:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 14:12:22,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 14:12:22,321 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 14:12:22,321 INFO L287 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-28 14:12:22,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:22 BoogieIcfgContainer [2019-11-28 14:12:22,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 14:12:22,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 14:12:22,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 14:12:22,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 14:12:22,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:12:21" (1/3) ... [2019-11-28 14:12:22,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffa58f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:12:22, skipping insertion in model container [2019-11-28 14:12:22,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:21" (2/3) ... [2019-11-28 14:12:22,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffa58f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:12:22, skipping insertion in model container [2019-11-28 14:12:22,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:22" (3/3) ... [2019-11-28 14:12:22,341 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-28 14:12:22,363 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 14:12:22,370 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-28 14:12:22,391 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-28 14:12:22,414 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 14:12:22,415 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 14:12:22,415 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 14:12:22,415 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 14:12:22,415 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 14:12:22,416 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 14:12:22,416 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 14:12:22,416 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 14:12:22,432 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-28 14:12:22,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 14:12:22,437 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 14:12:22,438 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 14:12:22,439 INFO L410 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]=== [2019-11-28 14:12:22,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 14:12:22,445 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-28 14:12:22,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 14:12:22,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654168216] [2019-11-28 14:12:22,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 14:12:22,529 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 14:12:22,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669749405] [2019-11-28 14:12:22,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 14:12:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 14:12:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 14:12:22,587 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 14:12:22,587 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 14:12:22,788 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 14:12:22,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:12:22 BoogieIcfgContainer [2019-11-28 14:12:22,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 14:12:22,809 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 14:12:22,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 14:12:22,810 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 14:12:22,811 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:22" (3/4) ... [2019-11-28 14:12:22,814 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 14:12:22,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 14:12:22,817 INFO L168 Benchmark]: Toolchain (without parser) took 1342.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -115.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2019-11-28 14:12:22,818 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 14:12:22,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -154.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-28 14:12:22,820 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 14:12:22,821 INFO L168 Benchmark]: Boogie Preprocessor took 31.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 14:12:22,824 INFO L168 Benchmark]: RCFGBuilder took 320.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-28 14:12:22,825 INFO L168 Benchmark]: TraceAbstraction took 483.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-11-28 14:12:22,826 INFO L168 Benchmark]: Witness Printer took 5.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 14:12:22,830 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 452.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -154.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 320.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 483.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 28. Possible FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-11-28 14:12:24,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 14:12:24,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 14:12:24,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 14:12:24,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 14:12:24,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 14:12:24,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 14:12:24,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 14:12:24,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 14:12:24,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 14:12:24,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 14:12:24,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 14:12:24,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 14:12:24,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 14:12:24,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 14:12:24,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 14:12:24,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 14:12:24,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 14:12:24,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 14:12:24,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 14:12:24,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 14:12:24,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 14:12:24,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 14:12:24,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 14:12:24,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 14:12:24,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 14:12:24,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 14:12:24,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 14:12:24,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 14:12:24,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 14:12:24,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 14:12:24,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 14:12:24,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 14:12:24,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 14:12:24,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 14:12:24,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 14:12:24,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 14:12:24,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 14:12:24,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 14:12:24,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 14:12:24,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 14:12:24,888 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 14:12:24,916 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 14:12:24,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 14:12:24,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 14:12:24,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 14:12:24,921 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 14:12:24,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 14:12:24,922 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 14:12:24,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 14:12:24,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 14:12:24,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 14:12:24,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 14:12:24,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 14:12:24,925 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 14:12:24,925 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 14:12:24,925 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 14:12:24,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 14:12:24,926 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 14:12:24,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 14:12:24,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 14:12:24,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 14:12:24,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 14:12:24,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 14:12:24,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 14:12:24,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 14:12:24,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 14:12:24,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 14:12:24,931 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 14:12:24,931 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 14:12:24,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 14:12:24,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 14:12:24,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 14:12:24,932 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-28 14:12:25,239 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 14:12:25,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 14:12:25,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 14:12:25,259 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 14:12:25,260 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 14:12:25,261 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-28 14:12:25,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51f05826/36a293d1b83a431c92c68156601257e1/FLAGb20b3307b [2019-11-28 14:12:25,753 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 14:12:25,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-28 14:12:25,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51f05826/36a293d1b83a431c92c68156601257e1/FLAGb20b3307b [2019-11-28 14:12:26,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51f05826/36a293d1b83a431c92c68156601257e1 [2019-11-28 14:12:26,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 14:12:26,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 14:12:26,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 14:12:26,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 14:12:26,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 14:12:26,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:12:26" (1/1) ... [2019-11-28 14:12:26,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230edc96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:26, skipping insertion in model container [2019-11-28 14:12:26,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:12:26" (1/1) ... [2019-11-28 14:12:26,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 14:12:26,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 14:12:26,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 14:12:26,376 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 14:12:26,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 14:12:26,497 INFO L208 MainTranslator]: Completed translation [2019-11-28 14:12:26,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:26 WrapperNode [2019-11-28 14:12:26,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 14:12:26,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 14:12:26,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 14:12:26,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 14:12:26,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:26" (1/1) ... [2019-11-28 14:12:26,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:26" (1/1) ... [2019-11-28 14:12:26,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 14:12:26,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 14:12:26,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 14:12:26,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 14:12:26,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:26" (1/1) ... [2019-11-28 14:12:26,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:26" (1/1) ... [2019-11-28 14:12:26,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:26" (1/1) ... [2019-11-28 14:12:26,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:26" (1/1) ... [2019-11-28 14:12:26,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:26" (1/1) ... [2019-11-28 14:12:26,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:26" (1/1) ... [2019-11-28 14:12:26,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:26" (1/1) ... [2019-11-28 14:12:26,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 14:12:26,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 14:12:26,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 14:12:26,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 14:12:26,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:26" (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 [2019-11-28 14:12:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 14:12:26,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 14:12:34,630 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 14:12:34,630 INFO L287 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-28 14:12:34,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:34 BoogieIcfgContainer [2019-11-28 14:12:34,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 14:12:34,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 14:12:34,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 14:12:34,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 14:12:34,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:12:26" (1/3) ... [2019-11-28 14:12:34,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4e6f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:12:34, skipping insertion in model container [2019-11-28 14:12:34,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:26" (2/3) ... [2019-11-28 14:12:34,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4e6f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:12:34, skipping insertion in model container [2019-11-28 14:12:34,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:34" (3/3) ... [2019-11-28 14:12:34,640 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-28 14:12:34,650 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 14:12:34,658 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-28 14:12:34,670 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-28 14:12:34,698 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 14:12:34,698 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 14:12:34,698 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 14:12:34,698 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 14:12:34,699 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 14:12:34,699 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 14:12:34,699 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 14:12:34,700 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 14:12:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-28 14:12:34,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 14:12:34,720 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 14:12:34,721 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 14:12:34,721 INFO L410 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]=== [2019-11-28 14:12:34,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 14:12:34,726 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2019-11-28 14:12:34,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 14:12:34,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586621944] [2019-11-28 14:12:34,736 INFO L94 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 [2019-11-28 14:12:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 14:12:34,882 WARN L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 14:12:34,886 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 14:12:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 14:12:35,015 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 14:12:37,895 WARN L192 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-28 14:12:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 14:12:37,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586621944] [2019-11-28 14:12:37,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 14:12:37,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-28 14:12:37,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624224157] [2019-11-28 14:12:37,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 14:12:37,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 14:12:37,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 14:12:37,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-28 14:12:37,943 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2019-11-28 14:12:55,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 14:12:55,548 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2019-11-28 14:12:55,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 14:12:55,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2019-11-28 14:12:55,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 14:12:55,561 INFO L225 Difference]: With dead ends: 67 [2019-11-28 14:12:55,562 INFO L226 Difference]: Without dead ends: 34 [2019-11-28 14:12:55,565 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-28 14:12:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-28 14:12:55,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-11-28 14:12:55,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 14:12:55,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-11-28 14:12:55,607 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 5 [2019-11-28 14:12:55,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 14:12:55,608 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-11-28 14:12:55,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 14:12:55,608 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-11-28 14:12:55,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 14:12:55,609 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 14:12:55,609 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 14:12:55,830 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 14:12:55,831 INFO L410 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]=== [2019-11-28 14:12:55,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 14:12:55,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2019-11-28 14:12:55,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 14:12:55,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607323266] [2019-11-28 14:12:55,832 INFO L94 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 [2019-11-28 14:12:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 14:12:57,035 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 14:12:57,036 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 14:12:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 14:12:58,183 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 14:13:01,860 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv4 32)) c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~r~0) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) is different from true [2019-11-28 14:13:02,459 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse0 .cse0))))) is different from false [2019-11-28 14:13:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 14:13:03,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607323266] [2019-11-28 14:13:03,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 14:13:03,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2019-11-28 14:13:03,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847488642] [2019-11-28 14:13:03,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 14:13:03,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 14:13:03,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 14:13:03,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=22, Unknown=2, NotChecked=18, Total=56 [2019-11-28 14:13:03,224 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 8 states. [2019-11-28 14:13:07,872 WARN L192 SmtUtils]: Spent 2.72 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-28 14:13:22,341 WARN L192 SmtUtils]: Spent 6.25 s on a formula simplification that was a NOOP. DAG size: 28 [2019-11-28 14:13:26,256 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~a~0) (or (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= (_ bv1 32) (bvadd (bvmul (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv4 32)) c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~r~0) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2019-11-28 14:13:28,967 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2019-11-28 14:13:43,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 14:13:43,328 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-11-28 14:13:43,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 14:13:43,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-28 14:13:43,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 14:13:43,330 INFO L225 Difference]: With dead ends: 33 [2019-11-28 14:13:43,330 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 14:13:43,332 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=34, Invalid=64, Unknown=4, NotChecked=54, Total=156 [2019-11-28 14:13:43,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 14:13:43,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-11-28 14:13:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 14:13:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-28 14:13:43,340 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 7 [2019-11-28 14:13:43,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 14:13:43,340 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-28 14:13:43,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 14:13:43,341 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-28 14:13:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 14:13:43,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 14:13:43,341 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 14:13:43,545 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 14:13:43,546 INFO L410 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]=== [2019-11-28 14:13:43,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 14:13:43,547 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2019-11-28 14:13:43,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 14:13:43,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177528164] [2019-11-28 14:13:43,549 INFO L94 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 [2019-11-28 14:13:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 14:13:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 14:13:46,264 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 14:13:46,264 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 14:13:46,465 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 14:13:46,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:13:46 BoogieIcfgContainer [2019-11-28 14:13:46,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 14:13:46,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 14:13:46,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 14:13:46,486 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 14:13:46,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:34" (3/4) ... [2019-11-28 14:13:46,489 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 14:13:46,526 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 14:13:46,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 14:13:46,527 INFO L168 Benchmark]: Toolchain (without parser) took 80400.64 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.8 MB). Free memory was 956.3 MB in the beginning and 954.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 73.9 MB. Max. memory is 11.5 GB. [2019-11-28 14:13:46,528 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 14:13:46,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.8 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -111.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-28 14:13:46,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-28 14:13:46,531 INFO L168 Benchmark]: Boogie Preprocessor took 30.05 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 14:13:46,531 INFO L168 Benchmark]: RCFGBuilder took 8060.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 14:13:46,532 INFO L168 Benchmark]: TraceAbstraction took 71852.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 954.3 MB in the end (delta: 85.8 MB). Peak memory consumption was 85.8 MB. Max. memory is 11.5 GB. [2019-11-28 14:13:46,533 INFO L168 Benchmark]: Witness Printer took 40.43 ms. Allocated memory is still 1.1 GB. Free memory is still 954.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 14:13:46,537 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 369.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.8 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -111.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.05 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 8060.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 71852.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 954.3 MB in the end (delta: 85.8 MB). Peak memory consumption was 85.8 MB. Max. memory is 11.5 GB. * Witness Printer took 40.43 ms. Allocated memory is still 1.1 GB. Free memory is still 954.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Result: UNSAFE, OverallTime: 71.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 57.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 41 SDslu, 72 SDs, 0 SdLazy, 73 SolverSat, 21 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 34.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 30.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 2 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 1 QuantifiedInterpolants, 1208 SizeOfPredicates, 11 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...